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<phretor>
is it possible to tell `bundle install` to install the gems in a local directory?
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<ibtkm>
hey every body, How can I put all methods among just one "rescue" statement? I don't want to put each method in a "rescue" statement.
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<ivar>
I have a class that mixes in Enumberable, so I need to implement 'each'. I want to delegate 'each' to an ActiveRecord.find_in_batches query. If I didn't have to supply args to find_in_batches, this would be doable with delegate. How should I do this ?
<havenwood>
XVirus: If you `gem install pry` from in Pry you can type `help` to see Pry-specific commands (worth a read).
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<lewix>
XVirus: don't believe everything you read on irc
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<XVirus>
I still don't understand how is irb a problem in my case
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<lewix>
XVirus: why don't you just run the file with the ruby interpreter
<havenwood>
XVirus: Pry has received a lot more love than irb. Very, very helpful. In your current case you need to reset irb, pry can do that.
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<lewix>
banisterfiend: I'll install pry when I'm done learning =)
<XVirus>
isn't a re load "file.rb" enough ?
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<havenwood>
Anyways, Pry doesn't make it harder for noobs and very powerful as you learn it.
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<lectrick>
havenwood: reverse_each.with_object is faster/better t han reverse.each_with_object ?
<XVirus>
pry looks very neat
<banisterfiend>
lewix: i dont see how that follows, it'll aid you in your learning IMO
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<havenwood>
lectrick: Yup, instead of doing a sort, then iterating - it iterates from back to front! :D
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<banisterfiend>
pull source/docs for nearly any method, etc
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<lectrick>
XVirus: Pry is the bees' knees. When you lurves it, don't forget to thank banisterfiend :)
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<XVirus>
banisterfiend: Thanks :-)
<havenwood>
lectrick: So no sort overhead. Just iterates in opposite direction.
<lewix>
banisterfiend: i don't have much space on my computer. it's the macbook air
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<lewix>
banisterfiend: it's either irb or pry
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<banisterfiend>
:)
<lectrick>
havenwood: aha. nice
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<lewix>
XVirus: load 'file.rb' is enough, but if you run attr_accessor :balance in irb before irb still remembers it
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<havenwood>
banisterfiend: Thanks for Pry!! ♥╣[-_-]╠♥
<lewix>
lol
<banisterfiend>
cool emoticon :D
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<lewix>
banisterfiend: thanks for pry.i love the love
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<charlie_>
Hello - question about modules. To define a method in a module, like Math::sqrt or something, you need to do module Math; def Math.sqrt(...); ...; end; end yeah? does that mean that methods in modules are really in the singleton class of the module? I'm confused
<becom33>
I want to a validate a only a url a clear url
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<havenwood>
becom33: require 'uri'; URI::regexp
<lectrick>
The ability to chain Ruby enumerators (and the almost-magic currying of block args) is amazing.
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<havenwood>
becom33: URI.regexp i mean.
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<havenwood>
becom33: URI::ABS_URI
<lewix>
charlie_: you defined a singleton method in the module Math, you could have defined an instance method that could be call by the instance of the a class that mix in module Math
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<lewix>
called*
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<Quadlex>
"The Ruby answer to both kinds of bugs is to write automated tests, lots and lots of automated tests" This is both the truest and funniest thing I have ever heard about Ruby
<lectrick>
shevy: dude just use inline tests, it's stupid easy
<havenwood>
becom33: If you don't want to allow spaces, try: URI::ABS_URI
<charlie_>
lewix: this is why I'm confused: when you call a method on an object, you check the singleton class, then the class. so when i call Math::sqrt, how does it find sqrt? sqrt is a method in the module Math, not in the class of Math, which is Module, see what I mean?
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<shevy>
lectrick what for?
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<lectrick>
if __FILE__==$PROGRAM_NAME; require 'test/unit'; class WtfHappenedToRefinementsTest < Test::Unit::TestCase; def test_refinement; end; end; end # And you're off! Just stick that at the bottom of any Ruby file.
<havenwood>
becom33: URI::ABS_URI seems to meet your test case expectations: url =~ URI::ABS_URI
<becom33>
havenwood, ABS_URI works fine
<becom33>
:D
<havenwood>
becom33: :)
<shevy>
charlie_ you can use module methods
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<becom33>
thanks
<lectrick>
shevy: because it validates your code, and when you're first building something out you rip out so much and change so much in a unit of time that it is the only way to validate that your cool-ass refactor didn't break anything
<becom33>
hey shevy after a long time man
<shevy>
lectrick ok now you argued for a big project here that requires refactoring. what about standalone .rb files?
<shevy>
charlie_ for instance: module Test; def self.yes; puts 'this is yes'; end; end; Test.yes # this is yes
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<shevy>
hey becom33 still in the wrong part of the world, are you? :-)
<charlie_>
shevy: thanks, so is yes a method of the singleton class of the object Test?
<shevy>
charlie_ well not sure what you mean with object here
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<shevy>
are modules objects? hmm
<charlie_>
shevy: yeah modules are objects, instances of the class Module
<shevy>
what
<shevy>
ohhhh
<lewix>
what do you mean by Math::sqrt
<shevy>
Module.new works hmmmmm
<havenwood>
shevy: I agree with the refactoring argument for tests. When I don't TDD I often seem to go back and add tests just cause I love refactoring and tests save a ton of time. Also, minitest/pride is awesome, all the colors make the code seem win.
<charlie_>
shevy: classes are also modules
<shevy>
whaaaat... classes are modules?!?!
<charlie_>
shevy: ruby's object oriented, so everything is an object
<lewix>
whats your point
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<havenwood>
shevy: Class.superclass; #=> Module
<shevy>
oh
<havenwood>
shevy: Module.class; #=> Class
<shevy>
I find that a bit confusing right now :-)
<shevy>
the superclass of Class is Module, but Module is also a class... hmmmm
<lewix>
calss.ancestors
<lewix>
class.ancestors*
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<charlie_>
shevy: yeah well this is why i'm confused about where Math.sqrt lives. is is a method in the object Math, or is it a method of the singleton class of Math
<havenwood>
shevy: The superclass of a Class is a Module whose class is Class, whose superclass is a Class ad infinitum.
<lewix>
it's a method
<shevy>
charlie_ I dunno, I never thought of calling Math an object before
<shevy>
I was always happy to say that Math is a module and sqrt is a class method (or do you say module method here??? hmmmm)
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<becom33>
shevy, yes I am
<lewix>
havenwood: It's a well engineered circle
<shevy>
I need beer now, afk ;-)
<becom33>
btw dude I goota as . I'm working on a cli app and I was wondering if there is a way I add a code that copies the output coming out from the script into clipboard
<becom33>
ask &
<becom33>
ask *
<havenwood>
lewix: Oops, except I messed up and my last Class should have been Module. Now I need a beer too. >.>
<charlie_>
when I do Math.sqrt, i'm calling a method on the object Math, calling a method looks in the class and singleton class of the object. the class of Math is Module, so you can see where i'm confused about how Math.sqrt works, unless sqrt is actually a method on the singleton class of Math
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<havenwood>
lewix: Agreed, hurts my head but seems to really make cool stuff possible.
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<havenwood>
charlie_: Math is a Module and sqrt is a class method.
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<lectrick>
shevy: ok I ate my own dogfood and added some quick tests to the "roman numerals just for fun" code I just wrote: https://gist.github.com/pmarreck/5104951
<havenwood>
charlie_: E.g.: module Math; def self.sqrt end
<lectrick>
shevy: That's my "i just need a test that runs only when this file is run by itself" pattern. You can start there and later move it into a suite.
<havenwood>
becom33: yeah, you can redirect output to also go to clipboard
<lectrick>
shevy: A lot of my Ruby class files have unit tests like that, except once I move the actual test out, I just require it at the bottom. That way whenever I edit a class in Sublime Text 2 I can literally just hit command-B and instantly know if I broke anything
<becom33>
havenwood, I was wondering how . I'm still googling for some awnsers
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<lectrick>
shevy: And this has saved my ass countless times. And this is why tests are cool. They're easy, and you're going to be "puts"ing some output anyway to prove your code works to yourself, so it's just 1 hop away from that
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<charlie_>
havenwood: if methods of modules are class method, then how are methods like puts found? Kernel gets mixed in by Object, but mixing in a module does not mix in the singleton class (where class methods live, is that right?)
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<lectrick>
havenwood: I added tests to my gist lol. Just to prove how easy it is
<havenwood>
becom33: Do you need to support a variety of platforms or just one OS?
<lectrick>
havenwood: (and I should have STARTED with the test, I know)
<havenwood>
becom33: Do you want to have `puts` both write to stdout and clipboard?
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<havenwood>
lectrick: Yeah..... I don't often do that either. >.<
<becom33>
I would love if it supports for linux, win & mac
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<becom33>
havenwood, what do u mean puts before
<becom33>
?
<becom33>
oh yea
<becom33>
like if there are two string output and only one string is copied to the clipboard . yes
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<havenwood>
becom33: I'd write a method that takes a block and inside the block does clip/stout printing.
<havenwood>
becom33: Writing to STDOUT and IO.popen should do the trick, just need the disto-specific clipboard code.
<charlie_>
lewis: ah awesome, so they are singleton methods. thanks very much. now I just don't understand how I can call a method like puts in any object. Kernel is mixed in, but the singleton class of a mixed in module is NOT mixed in as well
<havenwood>
lectrick: For exploratory hacking sometimes i find tests offensive, i know its heresy to some, oh well.
<lewix>
charlie_: Kernel.singleton_methods.include?(:puts) => true , banisterfiend: another exception?
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<havenwood>
lectrick: I'd just change it to minitest, but I like it. ;)
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<lectrick>
havenwood: offensive is a strong word lol. Here's what I find... after I write some code I will often "puts" some output to prove it works. A test is just a step from that. I actually think the asserts should be a core part of the language. and havenwood, I usually use minitest but this works out of the box
<charlie_>
lewix: i'm just trying to figure out how this works, and now I can't solve the problem it's frustrating me and i'd like to resolve it
<charlie_>
lewix: there's no particular wider problem that I'm trying to solve
<becom33>
aww now I get havenwood
<havenwood>
lectrick: Yeah, heh, offensive is harsh. Was just being silly trying to mirror the vitriol that i hear towards non-testers from a few BDD folk..
<havenwood>
becom33: Just checked it on OS X, and it indeed copies puts to clipboard.
<havenwood>
becom33: So just modify it to puts to both STDOUT and IO.popen and g2g.
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<lectrick>
havenwood: it is wrong to force anyone to do anything. unfortunately, the best way for people to realize what is better is for them to keep trying what is worse for long enough until they realize. unfortunate, because it takes time.
<havenwood>
lectrick: aye
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<havenwood>
lectrick: And like pajamas, can be awesome but not always perfect for the situation.
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<lectrick>
havenwood: LOL, when my gf asked me to get her these kid-like adult pajamas for xmas, I was like, errrr... uhhh... do they have g-string pajamas?
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<lewix>
charlie_: I know it is
<havenwood>
becom33: Avdi's RubyTapas has something just like what you need. He proxies puts output and has really good explanation of modifying $stdout. Can't remember the episodes.
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<becom33>
ok bro let me check into it
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<havenwood>
lectrick: hehe
<lewix>
charlie_: I've already accepted it as exception until proved otherwise
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<lectrick>
ok i gotta leave ruby and this channel or I will never decompress this evening. off to play Borderlands 2... /afk
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<charlie_>
lewix: I've figured it out: module methods are defined using module_function, http://ruby-doc.org/core-2.0/Module.html#method-i-module_function, so it's not an exception in the vm, it's that the methods go into more places than just either the singleton or the object
<charlie_>
lewix: thanks for helping me think it through
<charlie_>
lewix: yeah, it also sets some properties on it
<charlie_>
lewix: wow, it's certainly a hell of a lot more complicated than method Foo; def self.foo; end; end
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<lewix>
charlie_: actually now it makes sense. the fact that it's private
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<lewix>
charlie_: It seems we have both the singleton and the private instance methods define in Kernel, which explain it
<lewix>
defined*
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<lewix>
charlie_: Object.puts "lewis" doesn't work for a reason
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<charlie_>
lewix: i couldn't see this because the docs don't say what imperative actions, such as module_method, have been run after the methods have been defined, so you have no way of knowing that stuff without reading the source code
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<lewix>
charlie_: knowing what?
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<lewix>
charlie_: I didn't read the source code, it's all deduction. take what I say with a grain of salt, but so far it seems reasonable to me
<UberNerdGirl>
hemanth: are you from Hacker School?
<Es0teric>
UberNerdGirl where in NY is the hackerschool at?
<UberNerdGirl>
havenwood: I must say your handle/username is so soothing to look at
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<hemanth>
UberNerdGirl, yes
<UberNerdGirl>
Es0teric: it is in downtown NY
<havenwood>
UberNerdGirl: I like Project Euler! Haven't done one in a while, get my 25 badge with one more. :) Never took math after high school so I have to look em up a lot!
<sam113101>
what about mine?
<hemanth>
UberNerdGirl, i'm in there team, but not in ny
<UberNerdGirl>
sam113101: sorry yours is … (voice lowers to a whisper) … (drumroll)… generic!!! :O
<Es0teric>
wow how did i not know about hackerschool and i've been living in NYC for awhile
<Es0teric>
i feel... deprived
<sam113101>
fits my personality
<sam113101>
I'm just a man
<UberNerdGirl>
hemanth: orly? i iz confuzzled. do we know each other in person?
<sam113101>
a generic guy
<UberNerdGirl>
uh oh
<havenwood>
Look up the definitions of math terms i mean, not the answers. >.>
<UberNerdGirl>
that's a tragedy
<UberNerdGirl>
havenwood: what did you study in college, if i may ask?
<Es0teric>
girl programmers are pretty cool... very hard to come by them though
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<UberNerdGirl>
hemanth: i visited your flickr
<Es0teric>
very rare
<UberNerdGirl>
Es0teric: that makes me depressed
<UberNerdGirl>
i wish i had more girl friends
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<hemanth>
UberNerdGirl, heh heh ok, checkout my site as well...
<UberNerdGirl>
i am so obsessed with programming i am so seriously confused as to why more girls are not ecstatically flocking to such lush pastures of paradise
<Es0teric>
lol well UberNerdGirl it happens... i mean i have a friend that has her CCNA and Linux admin cert
<Es0teric>
which is wierd, because i have never seen a girl have that
<UberNerdGirl>
hemanth: i saw your flickr pic and you look familiar! did we meet through LispNYC?
<UberNerdGirl>
I loooove Lisp
<havenwood>
UberNerdGirl: My little sis applied, would have been there too...! But she didn't get in, she'd just started programming and they told her to keep studying and reapply.
<UberNerdGirl>
Scheme and Racket are my favorites. Here in New York, hackers love playing with Clojure
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<UberNerdGirl>
havenwood: so you had the video interviews? with whom did you interview?
<hemanth>
UberNerdGirl, nope
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<UberNerdGirl>
i'll have to talk to the co-founders tomorrow saying we crossed paths and you helped me earlier on IRC. They would wear a huge grin on their face :)
<havenwood>
UberNerdGirl: Yeah, I'm terrible with names though, let me look and see who it was.
<UberNerdGirl>
hemanth: actually, I am the most UBER NERDY girl I know, and I am so lucky b/c I am in Hacker School surrounded by very exciting, fun, cute, charming, silly, intelligent, girls
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<hemanth>
UberNerdGirl, good for you.
<Es0teric>
lol
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<UberNerdGirl>
yes, i am extremely puzzled as to why more people aren't wildly neurotically obsessed with programming
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* hemanth
poke Es0teric
<Es0teric>
sup, hemanth
<UberNerdGirl>
i did web design / graphic design / light front-end web development for 10+ years
<UberNerdGirl>
then 1.5 years ago
<Es0teric>
UberNerdGirl some people find it intimidating
<havenwood>
UberNerdGirl: Allison and David
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<UberNerdGirl>
I discovered Ruby, functional programming, Lisp.
<UberNerdGirl>
I felt I had died and gone to heaven
<hemanth>
Es0teric, nothing new, just pawing at some Ruby2.0
<Es0teric>
UberNerdGirl last month i discovered ruby... made the switch from PHP
<UberNerdGirl>
Now all my unbridled nerdy fantasies are slowly coming true
<UberNerdGirl>
havenwood: David is criminally adorable
<Es0teric>
hemanth yeah whats new in ruby 2.0 anyway?
<UberNerdGirl>
He wears a red little winter cap and he looks like a charming lawn gnome
<UberNerdGirl>
it kills me every time i see it
<UberNerdGirl>
so awesome
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<UberNerdGirl>
and he gives such encouraging, empowering, inspiring speeches to us at Hacker School :D :D
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<shevy>
the & is really weird
<FuzaiDesktop>
that looks more like what i'm trying to do
<UberNerdGirl>
wow that looks awesome
<UberNerdGirl>
.tap &:shift
<UberNerdGirl>
lmao
<UberNerdGirl>
i loves it
<havenwood>
FuzaiDesktop: #tap can be handy, and to_proc is always fun :P
<hemanth>
shevy, yes & is weird
<FuzaiDesktop>
how do i use that inside a hash?
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<UberNerdGirl>
oh i have an array question to. say I have defined an integer.prime? which returns 'true' or 'false' depending on whether the number is prime
<UberNerdGirl>
if I have a range upwards to infinity, like
<FuzaiDesktop>
hash = { "sayings" => JSON.parse(`cat file`) } and i seem get the name of the file on the front of the return
<UberNerdGirl>
2.upto(1/0.0)
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<UberNerdGirl>
or, as my favorite Rubyist Spooner would write 2.upto(Float::INFINITY)
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<havenwood>
Float::INFINITY
<FuzaiDesktop>
nm i think i see whats going on
<havenwood>
haha, was gunna say
<UberNerdGirl>
havenwood: when i first saw that
<UberNerdGirl>
i exclaimed
<UberNerdGirl>
OH YES, I would like to float to infinity!
<UberNerdGirl>
upon the cottony pillows of clouds! :D
<shevy>
man
<shevy>
that's some enthusiasm there
<UberNerdGirl>
anyways if I have a range upwards to infinity like 2.upto(infinity).bring_me_the_first(10) { |x| x.prime? }
<UberNerdGirl>
how do i do that?
<UberNerdGirl>
shevy: you should see me in person. I jump up and down
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<UberNerdGirl>
my question is worded in a ghastly way, sorry
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<shevy>
it would scare me too much, I am more like a hermit in a cave with a computer
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<UberNerdGirl>
how do I take the first instances in which the .prime? was true?
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<UberNerdGirl>
so basically, the first 10 prime numbers in the range I pass it in ( 2 up to infinity )
<UberNerdGirl>
i looked at take_while, and step
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<UberNerdGirl>
and i couldn't make sense of it :(
<UberNerdGirl>
that and i am sleepy
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<shevy>
only chuck norris can count to infinity without falling asleep
<shevy>
he did so even twice
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<UberNerdGirl>
shevy: quit watching adventure movies and answer my question
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<UberNerdGirl>
;)
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<shevy>
well I am not sure about that prime method
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<UberNerdGirl>
shevy: oh i said, assuming I have already created it
<havenwood>
2.upto(∞).slice(10) would be groups of 10.
<UberNerdGirl>
i wrote my own prime boolean that tells me whether a number is prime
<shevy>
oh slicing
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<UberNerdGirl>
so 2.upto( wow! how did you make that symbol? ).slice(10) would return the first group of 10?
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<sam113101>
>not using the prime lib
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<havenwood>
UberNerdGirl: On OS X, ∞ is option-5
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<shevy>
UberNerdGirl don't you just return an array here anyway?
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<havenwood>
UberNerdGirl: I like to do: ∞ = Float::INFINITY
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<shevy>
UberNerdGirl that's the enthusiasm of youth, the old ones become lazy
<UberNerdGirl>
shevy: i am slowly becoming a mummified fossil
<UberNerdGirl>
i will leave my 20's very soon
<UberNerdGirl>
:(
<havenwood>
UberNerdGirl: Yeah, I had fun doing it myself on ones that weren't too slow. I didn't actually implement sieves of eratosthenes, but.. that would actually be a fun challenge.
<UberNerdGirl>
havenwood: how exciting!!
* lushious
pastures
<UberNerdGirl>
i was gazing at sieves of eratosthenes like 14 ago!!!!
<UberNerdGirl>
i loved it!
<UberNerdGirl>
so many different sieves and tricks with primes! :D
<UberNerdGirl>
14 mos
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<lewix>
20:56 UberNerdGirl: yes, i am extremely puzzled as to why more people aren't wildly neurotically obsessed with programming : lol
<UberNerdGirl>
lewix: so what?
<UberNerdGirl>
i want to tattoo the metacircular evaluator in Scheme on my back
<UberNerdGirl>
lewix: how long have you been coding?
<lewix>
UberNerdGirl: I discovered it when I was ten, played around with the syntax of a few languages and took it seriously recently myself.
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<lewix>
UberNerdGirl: I was pretty into it back then until I discovered girls, it slowed me down for a while
<UberNerdGirl>
boring boring boring
<hemanth>
:D
<lewix>
haha
<UberNerdGirl>
people who get distracted by boys/girls are so boring to me
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<havenwood>
Wow, i guess i've been coding for 2 and a half years. Doesn't seem that its been that long.
<UberNerdGirl>
i never got distracted by boys
<havenwood>
Had to look at Github join date to remember. Heh.
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<aedornm>
you people make me feel old.
<UberNerdGirl>
wat
<lewix>
havenwood: UberNerdGirl: if you /nick info lewix you'll see how long I've been on IRC playing with different languages
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<lewix>
But i ended up 'mastering' none
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<lewix>
havenwood: lol /nickserv info*
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<havenwood>
:P
<UberNerdGirl>
awwww
<aedornm>
I've been programming for 30 years. Hence you people make me feel old.
<UberNerdGirl>
havenwood: did you get into the current batch?
<lewix>
UberNerdGirl: havenwood : aedornm : how old are you
<UberNerdGirl>
aedorn: the guy I have a crush on has been programming for about that length of time too
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<hemanth>
aedorn, kool, what is the one thing you regret for not doing it 30 years ago?
<lewix>
aedornm: what languages
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<lewix>
UberNerdGirl: so you do get distracted..
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<UberNerdGirl>
nope
<UberNerdGirl>
he helps me code
<UberNerdGirl>
he helps me with a lot of Lisp
<UberNerdGirl>
in fact, he *wrote* dialects of Lisp
<havenwood>
UberNerdGirl: Hrm, I interviewed in Sept. I guess that'd be this one or?
<lewix>
sounds nice
<lewix>
nobody answered the age question
<aedornm>
hemanth: Regret? There's no time for that!
* lewix
smiles
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<UberNerdGirl>
awww
<hemanth>
aedorn, wow! ok
<lewix>
aedornm: agreed!
<UberNerdGirl>
havenwood: that was the previous batch
<havenwood>
UberNerdGirl: ahh, kk
<UberNerdGirl>
lewix: who gives a crap, grow up
<havenwood>
UberNerdGirl: Yeah, they said if my sched cleared i could come to the current one then, but it didn't.
<UberNerdGirl>
you're making this sound like the 90's
<havenwood>
UberNerdGirl: I still wanna go though.
<UberNerdGirl>
a/s/l ?
<UberNerdGirl>
places
<UberNerdGirl>
havenwood: you should, people change in profound ways
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<lewix>
I can't stand disrespectful people
<havenwood>
lewix: just turned 34
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<lewix>
havenwood: I see.
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<aedornm>
lewix: I started with a TRS-80 doing machine code, and followed the "natural" progression of BASIC, 8086/8088 assembly, C, C++, and everything else.
* hemanth
is more intrested in what aedorn and havenwood are doing, rather than how old they are ....
<havenwood>
UberNerdGirl: I'd love to get exposed to people who code in different languages that immersively.
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* UberNerdGirl
agrees with hemanth
<lewix>
aedornm: impressive! what's your favorite
<UberNerdGirl>
havenwood: i see you are from socal
<UberNerdGirl>
I
<UberNerdGirl>
I used to live in West LA and Cerritos :) :) :)
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<UberNerdGirl>
i only moved to NYC 1.5 years ago
<havenwood>
UberNerdGirl: Nice! I've been in LA for 1.5 years.
<havenwood>
Moved here from Minnesota. Way more Rubyists in LA.
<UberNerdGirl>
if you visit, please let me know, I will show you some nice things and introduce you to awesome hackers
<havenwood>
Guess nothing like San Francisco, but..
<UberNerdGirl>
havenwood: my relatives are in Minnesota :D
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<UberNerdGirl>
anyways, regarding Ruby… .taint never made any sense to me
<UberNerdGirl>
it always made me laugh
<UberNerdGirl>
like… i would feel guilty to use that
<lewix>
okay guys nice talking to you. It reminded me if I have still a lot to learns.going back to do some more coding
<aedornm>
lewix: They're all interesting, but still Ruby. At least until the next great thing comes along.
<lewix>
aedornm: I was amazed by Ruby elegance. It blew me away
<UberNerdGirl>
aedorn: have you been seduced yet?
<UberNerdGirl>
by...
<UberNerdGirl>
the Lispsssssssss
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<havenwood>
UberNerdGirl: From Ruby man page: "[If you] like the concept of LISP, but don't like too many parentheses, Ruby might be your language of choice."
<aedornm>
UberNerdGirl: If I have to look at another function that ends with a million parenthesis I'll scream. =)
<havenwood>
hrm, i guess manpage is one word?
<UberNerdGirl>
aedornm: I iz severely disappoint to hear that, sir
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<UberNerdGirl>
havenwood: have you played with Lisps?
<UberNerdGirl>
Hacker Schoolers tend to love meddling with Lisps
<UberNerdGirl>
especially Scheme and Clojure
<havenwood>
UberNerdGirl: Nope, not at all! Most recently been playing with Elixir but Scheme particularly looks nice to me.
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<UberNerdGirl>
havenwood: oh wow!!! a few people are playing with Elixir here! :D
<aedornm>
havenwood: Yeah, Elixir is pretty nice
<havenwood>
Yeah, i've been really impressed. Fun to explore with iex REPL, definitely some interesting concepts.
<havenwood>
I get kinda used to seeing method arity like: puts/1
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<aedornm>
Psuedo off-topic, but also been liking Felix and Go.
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<havenwood>
aedornm: Yeah, I liked going through the basic Go tutorials. Have you looked at Ilya Grigorik's Agent gem?: https://github.com/igrigorik/agent
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<havenwood>
aedornm: What is Felix? What are its strong suits?
<havenwood>
aedornm: Fun to see Erlang and Go concurrency ideas come to Ruby!
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<havenwood>
I think tarcieri said he was considering upstreaming Celluloid concepts to Erlang.
<felixjet>
Felix is me
<felixjet>
xD
<aedornm>
havenwood: I have not, but I'll check it out. And Felix is basically a scripting language on top of C++.
<felixjet>
really?
<havenwood>
aedornm: ahh
<felixjet>
im the owner of a scripting language and i dont have the rights?
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<felixjet>
oh, bah...
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<lewix>
There's too many languages out there
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<felixjet>
there is a "felix" language, and appears felix the cat
<felixjet>
how original.. xD
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<lewix>
lol
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<aedornm>
lewix: hmmm, I don't think so. Objective C is more like an extension of syntax to C. I can't recall for sure, since I never used it myself. (Never used NeXT or Apple products!)
<lewix>
aedornm: you're right
<aedornm>
I bet on the other underdog, and lost (OS/2 and REXX, etc)
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<aedornm>
I did that again with WebOS ... yup, I pick all the winners.
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<lewix>
lol
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<aedornm>
Rooting for Firefox OS. Everyone might want to stay away from that knowing my streak!
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* lewix
takes note
* lewix
downloads google chrome
<lewix>
waiting for google OS
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<lewix>
android?
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<bean>
chromebooks run as close to a "google OS" as you'll ever get
<aedornm>
Chrome OS.. but they're talking about long term plans of ChromeOS and Android merging together.
<aedornm>
Next time I'm at Google maybe I'll go take a peak.
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<lewix>
21:37 <#ruby> havenwood: lewix: Why doesn't everyone code? I missed that lol
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<hemanth>
Hanmac, meow?
<lewix>
havenwood: they're too busy using our apps
<Hanmac>
huch?
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<hemanth>
Hanmac, wasssup
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<Hanmac>
i because i need to goto bath an then goto work
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<SirWolfgang>
So, whats a good time to use object.send(:func) rather then object.func ?
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* SirWolfgang
is trying to understand the use of send
<hemanth>
Hanmac, okies! cya soon then
<felixjet>
anyone recommends a ruby starting tutorial?
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<felixjet>
something like php handbook :p
<hemanth>
SirWolfgang, when you want to invoke a function that invokes a function
<Hanmac>
SirWolfgang: and when func is private you may need send to call it
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<felixjet>
codeacademy
<felixjet>
looks nice
<felixjet>
is translated to my language
<SirWolfgang>
Hanmac: but doesnt that really just break the pinceples of OOP, if you need external access your doing something wrong, or it should be accessable
<felixjet>
ah no, just the UI lol
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<felixjet>
i dont think it helps for this, as i dont see it there
<felixjet>
but maybe for another style questions
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<SirWolfgang>
felixjet: Ya, i dont see it either
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<SirWolfgang>
the C programmer me says @var since this.var is more typing
<SirWolfgang>
but i also would use {} rather then do end, in every case
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* SirWolfgang
doesnt like needless typing.
<felixjet>
sirecote well yea
<felixjet>
its covered in the style guide
<felixjet>
just scroll to the very bottom :P
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<felixjet>
above all else
<SirWolfgang>
heh
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<SirWolfgang>
I am trying to keep with the "rubyist" style and be nice to the lang. I dont like to write my own styles until I know the lang inside and out
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<SirWolfgang>
a good style prevents errors
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<lewix>
SirWolfgang: plain send can call an object private method and public_send can't
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<SirWolfgang>
ya, i get that. I just dont get a good case when to use send
<SirWolfgang>
to get access to private method seems like bad OOP design to me
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<SirWolfgang>
the entire point of private/protected methods is people dont use them...
<lewix>
SirWolfgang: it works well in cases where you need to pass a method without the dot operator - when you don't know the method name and you have to pass it as an argument
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<lewix>
SirWolfgang: private/protected does not mean the same thing in ruby
<lewix>
as in C
<lewix>
do*
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<Hanmac>
rubys protected is like friend in C
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<SirWolfgang>
Wait, so your telling me that Ruby is in fact not C! :p
<Paradox>
SirWolfgang, erm ah gerd
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<lewix>
SirWolfgang: if name.respond_to?(lewix) ; puts name.send(lewis) ; else puts "How come lewix is not in your database" end
<SirWolfgang>
Hanmac: that reminds me, the whole nil == false, but 0 == true is going to take a long time for me to keep stright
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<Hanmac>
SirWolfgang ... i think its more clear
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<SirWolfgang>
Hanmac: I see the reason behind it, it makes testing if valid easier in somecases, but i think in C and Bin, which means 0/Null/False are all the same, and are tested with accordingly. if(NULL) to me should be false
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<SirWolfgang>
but I like ruby simply becouse you can do things like this:
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<Hanmac>
then you may land in php where you need to be really really sure that the method returns FALSE and not 0 ... something like: func() ===== FALSE :P
<SirWolfgang>
[:each, :map, :select].each do |method| define_method(method) do |&block| games.send(method, &block) end end
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<Hanmac>
yeah ... but i think this whould be a job for method_missing
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<goganchic>
SirWolfgang, may be delegate :each, :map, :select, :to => :games will be better?
<Hanmac>
goganchic delegate looks after a fails .. äh i mean rails method
<goganchic>
Hanmac, yep
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<Hanmac>
this is the non-rails channel
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<peterhellberg>
Great… getting `const_missing': uninitialized constant YAML (NameError) when running rake under 2.0.0 and 1.9.3-p392, did I miss the memo on that while being away on vacation?
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<peterhellberg>
Hanmac: Heh, "nasty" but effective :)
<Hanmac>
peterhellberg ... yaml is not in core ... did you forget to require it?
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<peterhellberg>
I absolutely need to require yaml, but I just wondered about the change between the 1.9.3 patch levels
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<becom33>
can I ask ruby thor framework question or is there a channel for that ?
<peterhellberg>
becom33: Just ask, someone might be able to answer :)
<keepguessing>
Could not find on my anything that maps to it in ruby 1.9.3
<keepguessing>
Anyone can help me here
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<mntzn>
Hi, what's the nicest wait of setting $log.level = Logger::something via a variable? log_level = 'Logger::ERROR' $log.level = log_level doesnt seem to work
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<peterhellberg>
mntzn: Why do you use a string instead of the actual constant?
<mntzn>
I dont know )
<mntzn>
I will be passed as a string later on I think
<peterhellberg>
log_level = Logger::ERROR and then $log.level = log_level
<mntzn>
yeah, removing the quotes works
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<peterhellberg>
I’d probably write a method that sets the log level
<peterhellberg>
Especially if you need to set it based on a string/parameter
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<mntzn>
yeah I probably will
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<mntzn>
do you need to reqire something for const_get to work?
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<Hanmac>
mntzn hm no ... const_get is build in
<mntzn>
yeah I was doing it wrong, thanks
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<Hanmac>
i like this:: "Logger::ERROR".split("::").inject(Object,:const_get)
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<peterhellberg>
Hanmac: Why not just use Kernel.const_get "Logger::Error"?
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<Hanmac>
hm okayy ... that const_get can solv :: is a bit new
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<peterhellberg>
mntzn: Logger::ERROR is just a Fixnum btw, so you could just send 3 instead
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<mntzn>
debug being 0 and fatal 4 then?
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<peterhellberg>
Right
<Hanmac>
using constants is better than using the numbers directly
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<bw_>
hmm, i'm quite new to ruby, could anyone point me to a overview how the several webservers/webstacks .. well stack on each other?
<peterhellberg>
Absolutely, the constants are there for a reason :)
<becom33>
in speak task I want to have ither --file option or the argvment and second problem is i get a exception error if I didnt mention the file path after I mention the --file option
<bw_>
i read about rack, thin, unicorn, sinatra and some of those seems to sit on top of another
<peterhellberg>
bw_: Do you have a decent understanding of how Rack works?
<bw_>
nope
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<peterhellberg>
bw_: Rack is pretty much the de facto standard for servers to implement when it comes to serving Ruby applications.
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<bw_>
peterhellberg: its like wsgi in the python world?
<peterhellberg>
You might think of it like WSGI for Ruby
<peterhellberg>
Yes
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<peterhellberg>
(There is enough similarities for Phusion Passenger to support both Rack and WSGI)
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<bw_>
peterhellberg: so every other project is a layer on top of rack and in some cases middleware?
<peterhellberg>
The different servers (webrick, thin, unicorn, puma, passenger, etc.) are just different solutions to the same problem, serving Ruby (Rack) applications
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<peterhellberg>
bw_: Pretty much, Rack isn’t the _only_ way to serve Ruby applications on the web
<peterhellberg>
bw_: But it is by far the most popular
<peterhellberg>
Frameworks like Sinatra and Rails implement Rack on the other end
<peterhellberg>
So it is possible to run a Sinatra app on all the different servers
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<bw_>
ahh, now i see
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<bw_>
rack beening more like a interface not a server must have slipped me
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<bw_>
and started the confusion
<bw_>
peterhellberg: many thanks for the elaborate explaination :)
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<rzs>
Im getting the error 'cannot load such file -- rack'. When i do bundle show rack i get '/usr/local/rvm/gems/ruby-1.9.3-p385/gems/rack-1.4.5' which means rack is already installed
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<rzs>
The ruby version on my system is ruby 1.9.3p362
<rzs>
Whats causing this error ?
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<unflores>
:rzs when do you get the error 'cannot load such file -- rack' ?
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<rzs>
unflores: im installing redmine, a bug tracking tool written in rails. When i do rake generate_secret_token , that is when i get this error
<rzs>
Any reason why it says cannot load the file even though the gem is already installed ?
<Hanmac>
it feels that using bundle with rvm looks after a bad idea ...
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<Hanmac>
rzs what does gem list shows you? does it list rake?
<peterhellberg>
becom33: And you don’t use the words variable
<becom33>
petecheslock, this is just a example for my question
<peterhellberg>
becom33: And you open the file read only, is that what you want?
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<becom33>
petecheslock, well yea . thats not my problem if u run the script "test.rb help speak" it will give u the options
<peterhellberg>
becom33: Yes, then it will print the help
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<becom33>
ok what I want to do is to pass the parameter or give a path to speak . but the when u do just "test.rb speak" it won't do anything coz words param is eq to nil
<Hanmac>
becom33 why do you use File.open in this from? didnt we told you not to do that?
<becom33>
what I want is to give a warning or a message when there are no parameters passed
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<becom33>
Hanmac, just a demo
<becom33>
I used file read as a example
<peterhellberg>
becom33: http://whatisthor.com/ Just read the documentation about the usage of :required
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<peterhellberg>
becom33: I told you to read it earlier today :)
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<becom33>
yes I did
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<becom33>
hold on
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<becom33>
required is for the option . if the option is required
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<becom33>
thats not what I want
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<becom33>
I wan't get a error if parameter OR the option is not passed
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<peterhellberg>
Then you are actively trying to do something Thor doesn’t support out of the box
<becom33>
hmm then I get I have pass both as options right ?
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<becom33>
I guess *
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<becom33>
is there a method or somthing where I can get the message which displays when the "help speak" is called ?
<becom33>
inside the script ofc
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<adT>
hi
<adT>
I have a string like this "0A" (always a byte in hexadecimal). How can I convert that to a integer (10 in this case)
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<adT>
Hanmac: thank you so much I'm gonna try it
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<adT>
Hanmac: it seems It works correctly, thank you so much.
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<adT>
just a doubt. If I had "\x0A" instead, using "\x0A".to_i(16) returns 0
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<adT>
I'm trying to know the reason
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<oposomme>
hi, I need to thumbnails image is it possible to do it with ruby built in library or do I have to use RMagick?
<keymone>
there is minimagick - rmagick without bloat
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<oposomme>
keymone: thx I will have a look
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<gebbione>
hi all, an suggested eclipse plugin to work with ruby?
<gebbione>
hi all, do you know any suggested eclipse plugin to work with ruby?
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<Zelest>
*reads lemonparty* :(
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<sirfilip>
morning
<Hanmac>
gebbione: when you look in the eclipse plugins repo you find one, but it may not work with ruby1.9 syntax
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<Hanmac>
hm and there is also a little bug than you cant "debug" an project wich has the "wrong" type ... one of my project is C++ and ruby at the same time
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<gebbione>
Hanmac: i installed something to help with dynamic languages, for Ruby but no highlights or changes after restarting ... do you just use a text editor?
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<dorei>
is there any ruby data structure for handling bitfields?
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<JonnieCache>
gebbione: its not common to use a heavy ide like eclipse with ruby
<JonnieCache>
gebbione: because of the dynamic nature of the language you cant reliably do code completion or navigation
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<JonnieCache>
gebbione: most people use a text editor
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<wmoxam>
gebbione: RubyMine is popular for folk who desire IDEs
<Hanmac>
JonnieCache i use Eclispe for my gems ... but they are in C++ and have > 100 *.cpp files
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<tommylommykins>
hmm
<tommylommykins>
does anyone use netbeans for Ruby?
* tommylommykins
really liked the netbeans plugin
<tommylommykins>
seemed less buggy than other ruby IDEs
<breakingthings>
using an ide for anything but a compiled language is sillypants
<tommylommykins>
shame it's unmaintained now, I guess :s
<tommylommykins>
breakingthings: But if you're doing staticish things in your dynamic language, which you probably are, then there's no reason not to use an IDE?
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<breakingthings>
all dem have syntax highlighting, and bracket stuff, and...
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<tommylommykins>
sublime text doesn't parse your code though... if you get a "you're missing a end", sublime doesn't offer tools to help you with that?
<tommylommykins>
gebbione: But it has all the bugs!
<tommylommykins>
and its options window is almost as unnavigable as eclipse
<tommylommykins>
and it wants all your money
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<gebbione>
after 30 days
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* tommylommykins
installs sublimelinter
<breakingthings>
Now you're thinking with packages
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<tommylommykins>
breakingthings: But it can't give me a convenient squiggly red line under the error as I type?
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<breakingthings>
tommylommykins: sublimelinter highlights the line on save
<tommylommykins>
ooh
<tommylommykins>
that'll do :D
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<breakingthings>
you have package control, yea?
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<breakingthings>
that's the most important important thing to be important about.
<tommylommykins>
yeah
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<JonnieCache>
sublimelinter is great
<JonnieCache>
especially for js
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<hasse>
My app uses a Client to connect to an API. The app uses the client on different places. Im thinking of doing the client to an singleton class and do the setup in an init file. Is that a bad idea?
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<becom33>
anyone for me ?
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<eik3>
How can I avoid gets() emitting a \n character? I want to read an input but stay on the same line..
<apeiros_>
it's not gets which emits the \n
<apeiros_>
you'd have to take control over the IO
<apeiros_>
in 1.9, you can use require 'io/console', see IO docs. you want noecho
<Hanmac>
eik3 just strip the \n from gets
<flam_>
/w 33
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<breakingthings>
eik3: gets().chomp
<apeiros_>
I don't think that's his issue @ Hanmac & breakingthings
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<apeiros_>
eik3: the ugly thing about noecho - you have to manually reimplement any line editing
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<eik3_>
sorry had a disconnect, first line i got was "<breakingthings> eik3: gets().chomp"
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<apeiros_>
15:23 apeiros_: it's not gets which emits the \n
<apeiros_>
15:23 apeiros_: you'd have to take control over the IO
<apeiros_>
15:24 apeiros_: in 1.9, you can use require 'io/console', see IO docs. you want noecho
<apeiros_>
the part about noecho is wrong, though. it's insufficient.
<apeiros_>
it just waits until it gets the data back
<pseudonymous>
Is there a way to bind a method to a variable ? It's just a regular ol' method and I'd rather wait before I apply it
<apeiros_>
but if you take over control over the input device, then you're responsible for handling *every* input on that device.
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<eik3_>
do you know of any library that handles that?
<dblack_>
pseudonymous: m = object.method(method_name)
<apeiros_>
you might check whether curses, highline or readline provide facilities for what you want
<apeiros_>
but I doubt it
<apeiros_>
it's not really a common usecase what you want
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<eik3_>
ok so I'll work around it - thanks for your time!
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<cek>
what's the best way to define method dynamically? I'd like the debugger to "see" them.
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<cek>
self.class_eval etc doesn't quite work
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<walbert>
cek: self.define_method might be what you're looking for
<sirfilip>
why class_eval dont work ?
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<cek>
debugger doesn't step in
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<nsxt>
So I'm writing my first gem, but I'm having a little trouble deciding where best to put some mustache templates that will be parsed by the library itself... Is it best to put them in a /templates folder at the project root?
<whitequark>
nsxt: ruby 1.8 is approaching end of life. in 3 months there will be no more updates, including security
<whitequark>
it's also ancient.
<whitequark>
use 1.9.
<nsxt>
No, I was referring to your "for example" response to my question.
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<whitequark>
nsxt: ah. yes, you can use, for example, /templates in the root of your gem
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<nsxt>
whitequark: Great. What's the best way, then, to require those templates without doing a "../../templates" sort of thing? Is there a common idiom to load paths in something like a Config class, and then refer to that?
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<aaronmcadam>
anyone use tmux and rvm? I'm having really annoying issues trying to run rails server, it keeps looking in @global gemset instead of my @project one
<aaronmcadam>
"...ruby-1.9.3-p392@global/gems/bundler-1.3.1/lib/bundler/rubygems_integration.rb:214:in `block in replace_gem': rail│* 7a001a4 Merge pull request #6 from crowdlab-uk/update-factory-girl Aaron Mc Adam, 24h ago
<aaronmcadam>
ties is not part of the bundle. Add it to Gemfile. (Gem::LoadError) "
<aaronmcadam>
whoops soz
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<walbert>
nsxt: You probably don't want to use strictly relative paths - because you probably don't have too much control over the pwd - especially from a gem. I don't know of any idiomatic way of doing it other than File.dirname(__FILE__) + "../relative/path/to/file"
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<whitequark>
nsxt: yeah, what walbert said
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<nsxt>
Right, but I'd rather not litter the source with relative path requires - is it considered a 'good practice' to set that once in some sort of Config class? Or does that have its own drawbacks as well?
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<walbert>
nsxt: Of course. If you're duplicating code, it's "good practice" to avoid duplicating code . If you need that path more than once, you should tuck it away somewhere.
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<nsxt>
walbert: Sure. Makes sense... thanks!
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<apeiros_>
the good practice for requires is to properly set up $LOAD_PATH
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<nsxt>
apeiros_: but if these files are not rb files?
<walbert>
apeiros_: Even for a gem? I don't really want my $LOAD_PATH tainted by a third party
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<walbert>
Especially if the third party is going to "win" if there's a filename collision
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<apeiros_>
nsxt: when you say "require", I assume Kernel#require
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<nsxt>
apeiros_: Poor word choice. I was referring to mustache templates.
<apeiros_>
walbert: for a gem you don't have to do anything, because rubygems properly sets up $LOAD_PATH for you
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<apeiros_>
nsxt: ah. Gem.datadir is what I use. though the method to retrieve the datadir seems to be due for deprecation.
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<apeiros_>
walbert: if you require_relative in a gem, "you're doing it wrong"™ ;-) (all requires relative to 'lib' will work automatically)
<nsxt>
apeiros_: I'll take a look anyway, thanks.
<apeiros_>
nsxt: the mechanism is not being deprecated. only the way to retrieve the datadir.
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<apeiros_>
an oddity of the datadir is that the gemname is repeated in the path. e.g. YOURGEM/data/YOURGEM/
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<nsxt>
apeiros_: I'm trying to find an example of its usage, I'm not having much luck.
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<johannesbodannes>
Why would...
<johannesbodannes>
"'hi'".gsub(/'/, "\\'")
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<johannesbodannes>
just give me "hi'hi"?
<johannesbodannes>
I was looking to prepend each apostrophe with a backslash
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<apeiros_>
because \' is special
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<johannesbodannes>
Oh yes? Hm...
<apeiros_>
"'hi'".gsub(/'/, "\\\\'")
<apeiros_>
ugly, but necessary
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<johannesbodannes>
Fantastic, thanks!
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<VinceThePrince>
I'm having some difficulty starting foreman: http://pastie.org/6412223 I'm not using ruby 1.8.7 and he's complaining about it?
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<PigDude>
I need help with using the -r option to `irb` and `ruby`. Why can I require 'foo' from the shell, invoked by `irb -rubygems`, but `irb -rubygems -rfoo` does not locate foo?
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<walbert>
VinceThePrince: Perhaps when your json gem was compiled, it found ruby 1.8.7's headers rather than 1.9.3's - and compiled/linked against it? That's not a normal error, regardless. Try "gem uninstall json -v 1.7.7", and try a fresh bundle install for foreman.
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<VinceThePrince>
walbert, i'm doing that :) hope it will work
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<VinceThePrince>
walbert, same bug but now with eventmachine :s
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<walbert>
Yeah - it's defintiely related to your json gem, and not local to foreman.
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<Hanmac>
.... isnt json in stdlib so you dont need an json gem??
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<walbert>
Hanmac: The json in stdlib is pure ruby, but there's a gem of the same name which relies heavy on C extensions for a speed advantage.
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<flakrat>
I have a variable populated by an ldap search that results in "dn", my code then does a pattern match of: next if attribute =~ /dn/ this successfully skips on one system, but on another it's fails and continues the loop
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<flakrat>
I've done a puts on that variable and it only contains dn, any idea why the pattern match wouldn't work? If I hard code it, it does work, but populating the variable from ldap.search the pattern match fails
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<walbert>
Hanmac: You've got me there. Though what I said certainly used to be the case.
<flakrat>
I've tried /dn/ /^dn/ and == 'dn', all of those work on my Fedora 18 workstation, but fail on a CentOS 5.8
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<Hanmac>
walbert: ruby does ship the json gem inside too same for rdoc, rake, bigdecimal and others
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<VinceThePrince>
walbert, reinstall of rvm did the trick :)
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<flakrat>
hmm, strange, I had to add to_s to get it to work: next if attribute.to_s =~ /^dn/
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<Hanmac>
flakrat ... i think is a difference between 1.8 and 1.9+ ... =~ works for symbol on 1.9 ... on 1.8 it does not
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<_andre>
hello
<_andre>
does anyone know how to create a File object from a file descriptor in a C extension?
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<flakrat>
Hanmac, thanks, that explains it then
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<Hanmac>
_andre: ... so you have a FILE or and int of the fd?
<flakrat>
I was thinking something along the lines of non printable characters, but attempting stuff like attribute.chomp produced an undefined method, this lead to the realization that it was a symbol and not a string :-)
<_andre>
Hanmac: an int
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<walbert>
_andre: I believe you can instantiate an object of the IO class with just a fd - is it imperative that you create a File object?
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<_andre>
walbert: 'imperative' is a strong word :) but i would like to be able to call #lstat on the object
<_andre>
which is available in File but not in IO
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<Hanmac>
_andre: rb_funccall(rb_cIO,rb_intern("for_id"),INT2NUM(fd)) .... but you cant get lstat for it :(
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<becom33>
I know what I have done here is wrong https://gist.github.com/anonymous/b670d337896c0ac75a25, what I wanted to do is get the array string/strings which has (deleted) in it and get the value (in this script "26")
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<Ageo_>
Hello all
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<Ageo_>
I have a little problem with ruby, can you help me plz ?
<Ageo_>
i don't find a solution on internet, 2h i test -_-
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<dblack_>
Ageo_: if you have a question just ask it :-)
<Ageo_>
ok :)
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<Ageo_>
i try to install sql3-ruby-1.3.3.gem
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<Ageo_>
i have installed gem, and dll sqlite on C:\Ruby200\bin
<Ageo_>
but when i try to "gem install sql3-ruby-1.3.3.gem"
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<becom33>
nvm I got it done
<Ageo_>
i have this error: unable to resolve dependencies sqlite3-ruby require sqlite3
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<Ageo_>
i have look all google on this problem but anithing resolv this -_-
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<garbagecollectio>
what is a rack app vs a rails app
<walbert>
Ageo_: First of all, you shouldn't download the gem file. Rubygems (the gem command) will work much better if you allow it to find and install the packages you want by itself. "gem install sqlite3-ruby" should suffice without the gem file.
<walbert>
Ageo_: Second of all, make sure that the sqlite dll is in a directory your PATH environment variable contains. On windows, that's probably something you'll have to double-check.
<Ageo_>
same error walbert and if i try to gem install sqlite3 i have "unable to download data from rubygem.org"
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<Ageo_>
on my path, i have this: C:\Ruby200\bin
<Ageo_>
where my sqlite dll is stocked
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<Ageo_>
and i have sqlite3.dll & sqlite3.def on the folder
<Spooner_>
You probably don't want to use the ruby version (rather than the binary version) and you don't need to specify the directory since it will find it since that will be on the path already.
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<Spooner_>
You want the x86-mingw32 version (which will be the one it downloads by defaut).
<Ageo_>
no need to compile sqlite3 -_- WTF
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<Spooner_>
"gem install sqlite3" would be fine.
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<crised>
Do I need rails to make a contact form?
<Spooner_>
Ageo_, The -ruby version is pure source, so you'd have to compile it. In this case, of course, you can just download the pre-compiled version.
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<Spooner_>
crised, You can create a contact form with Rails, but no, you could use any framework to make it.
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<crised>
Spooner_: Which is the easiest way to do this?
<Spooner_>
I'd recommend using 1.9.3 if you are having problems of any kind (or are new to Ruby). 2.0 has only been released for a few weeks and not all gems work with it yet.
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<Ageo_>
how ok
<Ageo_>
i test tomorrow with 1.9.3 :) my day is done now
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<Spooner_>
crised, Sinatra is a much lighter-weight framework than Rails. Might suit you.
<Ageo_>
RubyInstaller 1.9.3-p392 released
<Spooner_>
Ageo_, You can use "pik" to manage multiple versions of Ruby on one machine.
<Spooner_>
*one Windows machine.
<Ageo_>
ok thx spooner i try tomorrow
<Ageo_>
i leave my work
<Ageo_>
i have nice day all and thx :)
<Ageo_>
bb
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<shevy2>
dumdedum
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<splud>
I'm having lots of grief working with an array of arrays...
<breakingthings>
splud how so
<splud>
Currently, want to delete (delete_if seems appropriate) elements where there's another with a duplicate value, but I want to be selective about which gets deleted:
<splud>
a = [[1,"string1],[4,"string1"],[1,"string2"]]
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<splud>
the numbers represent signal strength, the strings, an essid.
<splud>
(actual list is much larger)
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<splud>
(and contains many other elements in the array)
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<Spooner_>
That doesn't look too complex. Depends on your criteria for deletion though.
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<breakingthings>
splud: well, give an example of what you want to do with your example array there
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<splud>
delete only if count of elements where the string matches is >1, and where the numeric is less than or equal to the max.
<Spooner_>
Max of what?
<splud>
max of the elements where the strings match.
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<splud>
I desire to end up with a = [[4,"string1"],[1,"string2"]]
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<splud>
(given the above example).
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<Spooner_>
The number is _always_ going to be less than or equal to the max.
<splud>
yes, as long as there are MORE THAN 1 matching string.
<Spooner_>
What you mean is "delete the element with the lowest value until there is only one left"?
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<splud>
a = [[4,"string1"],[ 4,"string 1"],[1,"string1"]]
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<shevy>
hmm there is funny character in the middle
<splud>
Spooner : that'd work, though "lowest" needs to accomodate equal.
<Spooner_>
Does the order of the outer array matter?
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<splud>
may not be ordered.
<splud>
I can re-order afterwards.
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<splud>
This operation is to remove same-named ESSIDs from a network scan and retain just the strongest one, as the association would be with the ESSID (textual name of the network), not the BSSID (basically MAC of the individual AP)
<whitequark>
splud: didn't read all of the backlog, but it seems that you need `sort_by`
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<splud>
Still wondering how I match and delete here...
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<whitequark>
splud: don't delete. a.sort_by { |(a,*),(b,*)| a <=> b }.first
<splud>
I can sort the array fine (on a single element at least). Not sure how I'd sort on essid and subsort on strength...
<splud>
dpm
<splud>
don't ?
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<whitequark>
splud: yes. don't delete elements, replace the whole array with one of its elements
<whitequark>
as per essid/strength
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<whitequark>
you can sort by two factors like this: [ssid1, rssi1] <=> [ssid2, rssi2]
<whitequark>
arrays delegate sorting to their elements
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<k610>
y but again you need to have a partial match of the gem name
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<Spooner_>
But yeah, get the gem name from gem list and look it up on rubygems.org. Never been a huge problem that I can't do more in-depth searches.
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<Spooner_>
I just search in google if I can't guess part of the name.
<splud>
hrm...
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<k610>
e.g i'd like to search for gems that do something with readline "gem query --remote readline" is the closest i can get but i have to script the result and search description for each. Does everyone really does that each time ?
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<shevy>
no, I dont even use query at all
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<shevy>
I have 145 .gem files locally from other people here, of which I use about 20% regularly
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<shevy>
and readline comes with standard ruby
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<splud>
how to accomplish .max on an array of quoted values? f = ["-35", "5", "10"] ? f.max returns "5"...
<shevy>
the highline gem may be useful http://highline.rubyforge.org/ and Mon_Ouie has something related to io-console, but I always forget the name
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<splud>
(which is evaluated as string)
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<shevy>
how to you use .max on strings
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<Mon_Ouie>
Coolline. But still, t doesn't help more than Readline in his case.
<k610>
i'll dig deeper in highline & look into coolline & readline ... thanks
<splud>
trying to wedge that into the dupe remover...
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<k610>
i mean are cisco like cli apps bad and should be replaced by gem like apps ?
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<Spooner_>
splud You probably want to learn a bit more Ruby rather than needing to ask at every step of your development.
<k610>
whateva im making some squires port if i can
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<Mon_Ouie>
They're not bad. See e.g. Pry which has similar a
<alx->
Hi, I have a paperclip question: how can i pass auto_orient => false when using a proc to calculate image size: :styles => lambda { |p| { :medium => Proc.new { |instance| instance.resize_image } }
<Mon_Ouie>
a similar command system*
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<k610>
true that pry is awsome
<Mon_Ouie>
(It just also evaluates Ruby code)
<splud>
would love to have the time to sit down and learn more, but need to add some code to an existing framework.
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<Spooner_>
splud, Subcontract :D
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<splud>
I sorted the placement of the to_i to get what I needed. Thanks for your assist.
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<scriabin>
guys I have two csv files which ought to map to sets (they contain rows which have two attributes: a unique identifier, and a version number)
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<scriabin>
these csv files ought to contain the same lines, but the versions may differ
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<scriabin>
I'm wondering how to create a ruby script to detect the differences in the two files so I can list "identifiers in the first file but not in the second", "identifiers in the second file but not in the first", etc.
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<scriabin>
I was thinking of reading the files with the CSV library in 1.9.3, then bringing the data structure into a hash
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<scriabin>
from there can I perform set functions on the two hashes?
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<Guest1234>
is anyone familiar with a good process for software deliveries with respect to managing configuration properties?
<Guest1234>
I know of an am using Puppet
<Guest1234>
but I'm trying to figure out a good way to get parameters presented in a more manageable fashion for multiple data centers
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<Spooner_>
scriabin, You can just load the identifiers into Set and do set ops (& for intersection and | for intersection).
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<Spooner_>
(or -, of course).
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<lectrick>
Is it possible to capture a non-matching group in regex?
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<halogenandtoast>
lectrick: Do you just mean text that doesn't match a given expression?
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<lectrick>
I want to capture a string that is not the next match in sequence
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<lectrick>
Like, if the next character is a 0 (detected via forward-lookahead), I want to consume it but then actually capture a 1
<halogenandtoast>
You can tell an expression not to include a capture
<halogenandtoast>
(?:0)
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<lectrick>
yes, I know that, but in this case I want TO capture something, but not have it match
<halogenandtoast>
can you give me a more explicit string example.
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<lectrick>
basically, I want a regex that when set upon a string 'a', $1 returns 'b'
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<halogenandtoast>
I see
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<lectrick>
is that even possible?
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<lectrick>
"if the next character is a, capture a b"
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<halogenandtoast>
Nothing I know of will allow you to do this, but gsub allows you to give it a block where you can mutate the string contents.
<pandawarrior1>
russfrank: cool, i didn't know gsub takes blocks...
<halogenandtoast>
Sure pandawarrior1 thank russfrank even though I just said it
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<halogenandtoast>
lectrick: I don't think that problem falls under the wheelhouse of what regex was designed for.
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<pandawarrior1>
halogenandtoast: you did? soz, mate...
<lectrick>
halogenandtoast: I realize that, I am just wondering what is possible :O
<halogenandtoast>
At a basic level regex is designed to determine if a lexeme fits into a defined language
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<halogenandtoast>
mmm state machines
<lectrick>
Well, it is already able to capture, but captures have to match, I can't see it being that hard to implement a non-matching capture :O
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<halogenandtoast>
lectrick: You'd have to extend the regex language itself, which is already altered by perl regular expressions (which are not true regular expressions).
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<halogenandtoast>
It might not be "hard" but you'd have to come up with a syntax for it.
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<russfrank>
lol
<halogenandtoast>
At the same time I think you'd be cross pollinating concerns.
<russfrank>
halogenandtoast: sorry for stealing your credit buddy hahaha
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<halogenandtoast>
I know right!
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<halogenandtoast>
I was crushed for 5.23 seconds, it was horrible.
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<varane>
why is this possible ? puts "hello" if a > b i just saw that in a book and it really confused me because on the ruby website the 20 minute tutorial doesn't do that
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<banisterfiend>
varane: it's just a convenient short-hand
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<onewheelskyward>
Well, a 20 minute tutorial can't really cover everything.
<banisterfiend>
varane: instead of going: if a > b; puts "hello"; end
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<banisterfiend>
you can just go: puts "hello" if a > b
<varane>
banisterfiend: oh okay is there a place where i can learn about all the short hands ? i don't wanna get suprised anymore :P
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<banisterfiend>
varane: buy a book :P i recommend "the ruby programming language" by o'reilly
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<onewheelskyward>
And even with that, you'll still get surprised occasionally. Ruby is always evolving.
<varane>
banisterfiend: okay awesome thanks
<becom33>
how can I get the path from a string like "/this/and/this/and/that/meee.flv"
<varane>
onewheelskyward: like perl ? :P
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<onewheelskyward>
Heh. Absolutely.
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<becom33>
anyone ?
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<onewheelskyward>
becom33 Check out File.dirname.
<lectrick>
Is there something like "prev" to do the opposite of "succ"?
<_andre>
i'm trying to wrap the fstatat() function
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<banisterfiend>
Hanmac: what music do you listen to?
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<Chocobo>
Total newb here. Where in ruby-doc.org should I look for an explanation of what this is doing: "something.each do |a,b|" ?
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<csmrfx>
Chocobo: in Array
<Hanmac>
banister currently nothing ... otherwise JPop or RPG-midi music
<halogenandtoast>
Depends on what something is
<csmrfx>
Chocobo: try $ ri Array.each
<halogenandtoast>
it's likely to be an array
<halogenandtoast>
csmrfx: *highfive* for ri
<csmrfx>
looks bit like key-and value pair next to do, though
<Hanmac>
Chocobo or do you mean the |a,b| ?
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<Chocobo>
Ok, thanks... |a,b| is what I am most interested in... my guess is that (I may switch to python lingo, pardon me) that it is an array of tuples, and |a,b| are giving those parts a name
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<Chocobo>
Nothing known about Array.each <=== result of # ri Array.each
<yxhuvud>
chocobo: it follows the same rules as multiple assignment.
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<Hanmac>
hm try Array#each
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<Chocobo>
Nothing known about Array#each
<Hanmac>
:(
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<Chocobo>
Hmmm, I think ruby-doc might be a good refrence, but I think I have to go on a quest for a good tutorial.
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<banisterfiend>
Chocobo: hi
<banisterfiend>
Chocobo: |a, b| is (usually) used to destructure the object passed to the block
<csmrfx>
Chocobo: perhaps something wrong with your ri
<Chocobo>
Ahh thanks banisterfiend. That is about what I thought might be going on. I am more familiar with Python, but I am going to learn ruby so I can use Chef effectively.
<csmrfx>
try ri<tab>
<csmrfx>
and no, those are not tuples
<csmrfx>
just an array of objects, supposing it is an array
<Chocobo>
ri ri-ruby-2.0.0-p0 ri-ruby-2.0.0-p0@global
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<csmrfx>
looks like rvm
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<csmrfx>
anyway, ri Array.each or ri Array#each should return docs on each
<apeiros_>
Chocobo: if you installed ruby via rvm -> `rvm docs generate`
<banisterfiend>
>> def hello; yield([1,2]); end; puts hello { |x, y| x + y }
<apeiros_>
after that, ri will give output for `ri Array#each`
<halogenandtoast>
it's odd that ri has an entry for Foo
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<csmrfx>
must be an distributed ruby test deak
<csmrfx>
*deal
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<Chocobo>
building :)
<banisterfiend>
Chocobo: does python allow this kind of thing? x,y = [1, 2]
<banisterfiend>
cos that's what's happening inside that block
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<Chocobo>
banisterfiend: yes it does.
<banisterfiend>
if you just had { |x| } instead of |x, y| then you'd get the full array, i.e [1, 2] inside the block
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<banisterfiend>
Chocobo: do you play ff?
<Chocobo>
Ok, that makes sense. Now I need to work on symbols! :)
<Hanmac>
pah that is nothing ... does python can this: a,(b,c),d = [1,[2,3],4] #too? :P
<_andre>
Hanmac: did you have a chance to have a look at that code?
<Chocobo>
banisterfiend: Ahh... ff7 made me a happy young boy for many months :)
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<Hanmac>
_andre yeah but not way to test it yet :(
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* csmrfx
goes back to dwarf fortress
<_andre>
this error is crazy "wrong argument type stat (expected stat)"
<interactionjaxsn>
Chocobo: I was a huge fan of tactics. just my two cents
<Chocobo>
csmrfx: you are my hero. Dwarf fortress is the best! If you ever find a good map that has a surface volcano let me know :)
<bean__>
df is a great.
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<bean__>
i want to play it but am at work :(
<Chocobo>
interactionjaxsn: Also a great game!
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<Chocobo>
bean__: so? bean ... any relation the "Ender's Game" series of books?
<bean__>
of course.
<Chocobo>
excellent
<bean__>
my other nick is julian-delphiki
<Chocobo>
Haha nice. This channel is full of awesome things.
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<julian-delphiki>
sadly there is a guy who is using "bean_"
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<julian-delphiki>
and he won't let me has it.
<Chocobo>
I always liked Bean better than Ender.
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<shevy>
Bean is better than Mean, and Gender better than Ender
<banisterfiend>
Chocobo: ff12 was the best
<banisterfiend>
;)
<julian-delphiki>
gtfo
<banisterfiend>
heh heh
<jrajav>
ff12? what the hell is that?
<jrajav>
I thought they skipped straight from 11 to 13
<Chocobo>
banisterfiend: is that the one where girls wear different clothes to give themselves power? or something equally horrible?
<banisterfiend>
Chocobo: nah that's 10
<jrajav>
10-2
<Chocobo>
Hold on... if I remember XII is pretty good.
<jrajav>
It's actually not terrible
<jrajav>
It's just a running joke that no one ever acts like it even existed
<banisterfiend>
jrajav: y dat
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<Chocobo>
I had to look it up, but yeah I played that one. If I remember correctly the most annoying thing was the loading between areas.
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<_andre>
Hanmac: just realized the 1.8 code works
<jrajav>
heck if I know
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<Chocobo>
I still think Earthbound may be my favorite RPG
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<Chocobo>
wow, takes a while to build the documentation.
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<Chocobo>
is there a difference between arr.each { |a| print a -= 10, " " } and arr.each do |a| .... end ?
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<whitequark>
Chocobo: yes and no
<whitequark>
two of your snippets are equivalent
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<whitequark>
but: `a b { c }` and `a b do c end` parse differently
<whitequark>
in the first case the block is bound to the rightmost method, i.e. `b`
<shevy>
Chocobo {} is shorter than do end
<whitequark>
Chocobo: but in the second one that's `a`
<becom33>
how can I fix the syntax pattern in ruby easily
<becom33>
code is mess
<whitequark>
Chocobo: the general idea is that {} is for 'inline' blocks, and do...end is for bigger, multiline ones
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<whitequark>
becom33: google for "ruby code formatter" or "code beautifier"
<Chocobo>
Hmm, ok thanks. Interesting.
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* whitequark
places his psychic powers back
<interactionjaxsn>
whitequark: how you do that?
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<whitequark>
interactionjaxsn: what in particular?
<interactionjaxsn>
places his psychic...
<whitequark>
interactionjaxsn: /me
* interactionjaxsn
sheds tear of joy
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<Chocobo>
I love asking really annoying questions to people who know more than me... so here we go. arr = [[1,2],[2,3],[3,4]]; arr.each { |a,b| print a+b }; 357 => [[1, 2], [2, 3], [3, 4]]
<Chocobo>
I get the "357" by why the => [[1, 2], [2, 3], [3, 4]]
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<Hanmac>
Chocobo .each returns self
<GeekOnCoffee>
and rib prints the return value
<GeekOnCoffee>
irb even
<Chocobo>
ohhh... that would make sense. doh.
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<Chocobo>
Thanks, I will go back to my corner now :)
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<Hanmac>
shevy i found this error: "undef leaked to the Ruby space" :D
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<Chocobo>
huh... symbols are kind of neat.
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<julian-delphiki>
symbols are very neat
<julian-delphiki>
:)
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<halogenandtoast>
I've never described them as neat.
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<halogenandtoast>
But I came from languages with atoms.
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<becom33>
can anyone tell me how can I get ruby script to play a file in linux default media player ?
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<shevy>
Hanmac odd error
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<halogenandtoast>
becom33: Kernel.exec or if it has a c-api use that (but I doubt the later).
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<Squarepy>
becom33, call the process f.i. with system(), I guess it is commandline callable
<csmrfx>
becom33: ri system or ri `
<becom33>
halogenandtoast, umm sorry I dont thin I understand what you ment
<TTilus>
" linux default media player"? theres no such thing
<becom33>
TTilus, what ever the OS has it as a default player
<halogenandtoast>
csmrfx: why system or ` over exec, I'd assume you'd want to replace the current process.
<Hanmac>
_andre: i didnt get the 1.9 version working ... i have ENOUGH !!! i will make a ticket request for stat -> VALUE ... and no one can stop me :D
<TTilus>
becom33: once you find out about the desktop env the user has and find the default media player executable name you can run it using system-method
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<becom33>
TTilus, thats the problem how can I find it
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<ablemike>
anyone know why bundler keeps storing gems in vendor/cache?
<csmrfx>
halogenandtoast: in fact, you want to use `
<csmrfx>
it is said to be a bit faster than system
<ablemike>
someone on the team did something and now everytime i bundle in this project vendor/cache keeps getting filled up with cache's of the gems
<TTilus>
becom33: there are dozen of different preference systems, pick one and use it
<halogenandtoast>
csmrfx: I've had problems with media players when they aren't the parent process.
<halogenandtoast>
In particular mplayer
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<shevy>
becom33 is there a "default player" on linux? where would that be stored?
<csmrfx>
it just runs in a subshell, I don tsee what the problem could be there
<shevy>
hey, I would not have any idea about the names :) but let's say "the latest apple OS always"
<shevy>
ack, never read exo-open before...
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<halogenandtoast>
darwin is the kernel, you can boot into single user mode
<shevy>
ah ok
<halogenandtoast>
which loads the OS sans GUI
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<TTilus>
shevy: its a unix, heavens sake!
<shevy>
it's quite bastardized on the outside
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<halogenandtoast>
osx?
<halogenandtoast>
If so, I agree.
<TTilus>
osx is more unix than linux distros
<shevy>
!!!
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<TTilus>
honest
<shevy>
I find no words, only !
<TTilus>
see conformance to single unix spec!
<shevy>
I must overwrite your nick with !
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<TTilus>
my god, it is basically nextstep on top of bsd =D
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<lsoa>
Hanmac: so, I managed to fix my code, and part of my thought process too :)
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<lsoa>
Hanmac: which got me thinking... let's say I need to encapsulate my C extension logic in a Class. Wouldn't it be easier to create an AbstractClass in ruby, then create a Class < AbstractClass in C just to perform the glue part? keeping struct vars in sync etc?
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<apeiros_>
lsoa: you can have parts in ruby and parts in C without an abstract class
<Hanmac>
i dont know
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<apeiros_>
pointless IMO
<lsoa>
apeiros_: yes, but I want to avoid the endless rb_iv_set rb_iv_get
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<Hanmac>
i prefer, when i make an C(++) gem to write everything in C(++)
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<apeiros_>
lsoa: then don't. you can use self.foo= on the ruby side instead of ivars.
<lsoa>
apeiros_: then my life is so much easier, if I want to write a binding
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<ad_r>
hi
<shevy>
becom33 [[]].flatten.empty? # => true
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<lsoa>
I can write the low level stuff in C, then add high level methods in pure ruby
<lsoa>
after I can access the structs I need
<apeiros_>
exactly
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<lsoa>
I think I understand it better now
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<lsoa>
thanks :D
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<apeiros_>
you can also prototype in ruby
<apeiros_>
then when you think something is a bottleneck, move that part to C too
<adT>
hi
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<lsoa>
I see. but it's kind of the reverse I'm trying to do now
<lsoa>
I have this lib in C which I want to use in ruby
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<Hanmac>
and when C is bottlenecking move that part to ASM :P
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<lsoa>
and then you move it to the *cloud*
<adT>
when I do something like "\x00\x11\x22\x33"[1,2].unpack('v*')[0] I get the correct value => 8721 But If I do "\x00\x11\x22\x33"[1,1].unpack('v*')[0] (just offset 1) I get nil
* lsoa
ducks :D
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<adT>
can I solved that using other way?
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<shevy>
lsoa ruby needs you!
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<shevy>
ruby needs C people
<lsoa>
I'm hardly a C person :D
<shevy>
you know C
<apeiros_>
adT: why do you even expect that to work?
<lsoa>
I'm just a nosy sysadmin
<apeiros_>
v needs 2 bytes
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<lsoa>
eheheheh
<jrajav>
Judgmental Asian dad says: Why you C person? Why you no A person?
<shevy>
I don't know C but I know ruby a bit
<lsoa>
jrajav: haha
<apeiros_>
if you want to unpack 1 byte, use the proper template string. e.g. "C"
<shevy>
jrajav must be the local entertainer at work
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<adT>
apeiros_: I kwno that that could not work :p but is there any way to add padding to avoid that. My problem is that the offset is a var --> "\x00\x11\x22\x33"[1,i].unpack('v*')[0]
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<jrajav>
Also I feel very comfortable using that meme because I have several Asian friends (from different countries even), and their dads (or moms filling in for the role) are literally that, exactly.
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<adT>
and I would like to add padding in the case I have just a nible
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<lsoa>
well thanks guys, let me hammer my problem a lil more then I'll bring some more issues to you :D
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<soulisson>
hi, sorry about this question but i'm having troubles understanding the concept of attribute in oop, can someone explain as simply as possible ?
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<alexyz>
does rescue always require a begin?
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<apeiros_>
alexyz: yes. but `def` can also act as `begin`
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<shevy>
alexyz hmm I think so
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<apeiros_>
ah, there's also inline rescue
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<apeiros_>
but I'd rather disadvise its use
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<alexyz>
apeiros_: so one could write: def name <statements> rescue ... end?
<aaronmcadam>
anyone know if bundler have dropped the --binstubs flag?
<aaronmcadam>
gives an error now
<apeiros_>
alexyz: yes
<alexyz>
interesting... thanks apeiros_
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<apeiros_>
nice for short methods
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<shevy>
but how could such a short method fail?
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<alexyz>
shevy: I imagine it could be a 3rd party system call, i/o etc
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<shevy>
hmm
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<apeiros_>
shevy: in all ways possible
<apeiros_>
sometimes even in some impossible ways
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<Guest45517>
hi all, i'm trying to install redmine 2.2.3 on windows server 2012 x64, with mysql. i have a lot of trouble, mainly with imagemagick and with mysql connector too. is there a "step guide" (i've tried to follow the wiki's one, without success) that can help me? i know that this is not mainly a ruby problem, but i think that the issue is related to the gem installation of the product...
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<julian-delphiki>
THat sounds god damn terrifying
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<julian-delphiki>
i'm not sure why anyone trys to do anything ruby on windows.
<Guest45517>
julian, i undestand... but my company want it on windows
<Guest45517>
i know that this doesn't sound great :'(
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<Guest45517>
julian, you think this is not good or that this is not really possible? :(
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<scriabin>
is there any Head|Tail list functionality somewhere in Ruby? (like erlang etc.)
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<scriabin>
I have an array of arrays which I need to convert into some set-like data structure
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<scriabin>
trouble is, in at least one case, the arrays inside aren't the same size
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<whitequark>
scriabin: so?
<scriabin>
long story, sorry
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<whitequark>
scriabin: I don't understand your problem. Anyway, look up Array#flatten
<shevy>
%w( abc def ghi ).grep(/de/) # should give me back "1" eventually
<shevy>
ah ok thanks apeiros_
<jsonperl>
Hanmac: thanks!
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<apeiros_>
scriabin: Hash[ary.map { |k,*v| [k,v] }] if you want it normalized
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<apeiros_>
if you really want this denormalized "once the value is an array, once not" oddball thingy, then add a check for v.size == 1
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<scriabin>
apeiros_: does the *v deal with the irregular tail?
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<Hanmac>
it turns everything into an array :P
<scriabin>
ok I'll *try* it :)
<scriabin>
thanks
<apeiros_>
irb is your friend
<apeiros_>
or pry
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<whitequark>
scriabin: note that head|tail in erlang and [h,*t] construct in ruby are very different internally and exist for completely different reasons
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<scriabin>
ape that's totally awesome - thanks
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<jsonperl>
Hanmac: it seems as if rb_global_variable will never release the memory until the program exits
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<Hanmac>
jsonperl what else did you expect?
<jsonperl>
Hanmac: It looks as though rb_gc_register_address and rb_gc_unregister_address should allow me to clean it up
<jsonperl>
well i want to hold it… till i no longer want it
<jsonperl>
but this is a server… so it will create and reclaim a lot of times
<jsonperl>
but that function pointed me to those, so very much appreciate
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<halogenandtoast>
maybe you don't want a global.
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<Hanmac>
hm i didnt get rb_gc_register_address working for me ... so i use an hash with rb_global_variable and then store the object like { INT2NUM(obj) => obj } inside the hash
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<jsonperl>
ill go give it a shot
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<Hanmac>
PS: you cant use an array for that because it will bite you
<jsonperl>
back in 5 :)
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<jsonperl>
a comprehensive ruby c api doc would be amazing
<jsonperl>
i found most info in random forum posts
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<Hanmac>
jsonperl: that is nothing :P ... i have an lib where an C++ object forces an Ruby Object to stay alive as long the C++ object lives :P
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<jsonperl>
i started trying to c++ some of my logic
<jsonperl>
kinda gave up for the time
<jsonperl>
i've got some BEEEFY stuff going on in c
<jsonperl>
the api is very powerful, once you know it
<jsonperl>
deepworldgame.com
<jsonperl>
the backend is all ruby/c
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<jsonperl>
i think rb_gc_unregister_variable is gone
<jsonperl>
maybe it was once there
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<scriabin>
when you convert an Array of Arrays to a Hash, if the Array of Arrays has multiple "keys" then some of the records get dropped. Is there any nifty ruby-way of knowing which records got dropped?
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<scriabin>
a = [["a",1],["a",2]]
<scriabin>
h = Hash[*a]
<scriabin>
a.size != h.size
<apeiros_>
a) select duplicate values, b) use merge with a block instead of Hash::[]
<apeiros_>
there are probably a couple of other ways
<scriabin>
but if you're worried, unplug it from the wall and put on a hat fashioned from tin foil. Also bag up your poop in ziplocks
<Hanmac>
apeiros_ only if its the EA version :P
<apeiros_>
Hanmac: the EA version won't run offline
<scriabin>
so are there *no* set functions for hashes?
<scriabin>
bummer
<Hanmac>
yeah that what i meant ;P
<apeiros_>
scriabin: ¿que?
<scriabin>
hashes seem a lot like sets, right?
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<apeiros_>
well, you can express about every data structure as a set
<scriabin>
I'm trying to compare two csv files in ruby
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<scriabin>
the files ought to be identical, if they're not, I want to list what's present in file a but not in file b or vise-versa
<zeta>
apeiros_: ok, I think its all good and tell breakingthing I don't have a
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<zeta>
botnet, lol
<Quadlex>
scriabin: Is order important?
<scriabin>
no it's not
<scriabin>
I mean the file should start alphabetized, but I can manipulate it in any order
<breakingthings>
zeta ur all the botnets
<Quadlex>
So you couldn't use diff
<breakingthings>
i am russian hacker
<breakingthings>
ha ha
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<zeta>
breakingthings: I'm sure you're a hacker but my computer has not become a zombie machine by you
<breakingthings>
zeta yes it has
<breakingthings>
you do not know
<breakingthings>
ha ha
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<apeiros_>
scriabin: so basically you want to compare rows
<zeta>
breakingthings: of course I know bitch, I know what is happening now and if you're such a hacker then go ahead and gain remote access to me
<apeiros_>
scriabin: just use Set then
<scriabin>
apeiros_: yeah but since ruby is always so amazing I try not to iterate as a first try :)
<apeiros_>
a = Set.new(CSV.read(file1)); b = Set.new(CSV.read(file1)); a-b; b-a
<breakingthings>
LOL
<breakingthings>
zeta
<breakingthings>
i'm just screwing around bud
<zeta>
give my my location, prove your hackiness because I have tracerouted all the IP addresses and they all come back whitlisted
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<breakingthings>
calm yo self
<apeiros_>
b should obviously be file2
<breakingthings>
can't you tell by the horrible "I AM RUSSIAN" 'accent'
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<scriabin>
again: amazing
<scriabin>
I didn't know csv could just be read into a set
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<scriabin>
if there are duplicate keys they just get dropped?
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<scriabin>
silently?
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<zeta>
breakingthings: lol oh
<zeta>
k sorry
<scriabin>
boris and natasha ovuh heeya
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<julian-delphiki>
zeta: what software are you running with ruby.
<havenn>
scriabin: A duplicate key is the same key with a new valueB but prolly should check if keys are unique as you parse them to Hash, since Hash keys are unique.
<breakingthings>
julian-delphiki: it's some OSX internal stuff.
<apeiros_>
scriabin: duplicate records would only occur once, yes
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<apeiros_>
if records can be duplicated, I'd use counting hashes instead and compare occurrence counts
<scriabin>
so I'm thinking I read csv into a hash and into a set, check if there are dup's in the array (using the nifty group_by) on the array, then proceed with set functions
<apeiros_>
a = Hash.new(0); CSV.read(file1).each do |row| a[row] += 1 end
<zeta>
julian-delphiki: yes osx running network ruby scripts or some shit like that, nothing malicous because I have tracerouted the ip addresses and everything is whitelisted
<scriabin>
apeiros_: if there are dups, then they are in error, but there may be dups.
<julian-delphiki>
lol
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<scriabin>
this ought to be a file of application's on a server, [package_name,version]
<havenn>
scriabin: So what is the desired behavior when you're parsing csv to hash and you find a dup? Raise an error? Rename the dup?
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<scriabin>
it's a report, so I'
<scriabin>
I'll just report it
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<scriabin>
"In file a, these records were defined more than once: ..."
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<epta>
How can I found unused `require's in ruby file?
<epta>
Or unused variables
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<julian-delphiki>
i don't know about requires, but ruby -w would tell you some
<havenn>
epta: An unnecessary require will return false. Ruby 2.0 can report assigned but unused variables.
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<havenn>
epta: Oh, by unnecessary require do you mean that it has already been required or that the class or module in the required file isn't used?
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<johnnygoodmancpa>
exit will stop the script, break will stop the loop.
<johnnygoodmancpa>
Is there a ruby command to stop executing only THIS PASS on a loop?
<havenn>
johnnygoodmancpa: next
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<johnnygoodmancpa>
havenn: hug
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<epta>
havenn: be unused require I mean `require 'some'' which is useless because non of imported objects are not used
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<havenn>
epta: ah, gotcha
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<scriabin>
havenn ok I've come full circle
<havenn>
epta: I guess you've got to decide what used means. If there is a single constant referenced or monkey patch or method on main.
<scriabin>
reading a csv file into a set returns a set of arrays (that makes sense I'm sure)
<apeiros_>
a row is an array of fields
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<scriabin>
{["apache","2.6.12"],["sshd","1.8.9"]}
<scriabin>
etc.
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<scriabin>
surely file_a_set < file_b_set won't work in a set-like way?
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<havenn>
I like that Ruby 2 doesn't report _-prefixed variables if they are assigned an unused. Nice idiom.
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<apeiros_>
and what would "set1 smaller than set2" do?
<apeiros_>
in a set-like way…
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<apeiros_>
havenwood: rubymine was/is clever that way too
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<apeiros_>
(and yes, good that ruby does that now too)
<scriabin>
sorry I used < to mean 'is a subset of"
<apeiros_>
scriabin: let me introduce you to ri
<apeiros_>
`ri Set` in your bash or whatever shell will give you a list of all methods of Set
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<apeiros_>
I'm sure you'll find the method you're looking for
<havenwood>
apeiros_: Nice. I checked out a beta EAP release of RubyMine and it seemed pretty cool. Have you used it for larger projects? Fast enough? Worth it to deal with complexity?
<apeiros_>
scriabin: alternatively you could look at the code I gave you, which ends with `a-b` and `b-a`
<scriabin>
proper_subset, asliased as <
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<apeiros_>
havenwood: I don't use it myself. coworker does. seems nice. but make sure you've shitloads of ram ready for it
<scriabin>
I'm asking whether that kind of function works for a set of arrays, not a set of primals?
<scriabin>
I'll test in irb
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<havenwood>
apeiros_: I've got 16GB but just flop between TextMate 2 and VIM.
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<havenwood>
apeiros_: Tried to get emacs working with xiki but gave up without really trying very hard
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<aedorn>
havenwood: That's like my gaming machine... it has 32GB, but it just sits there collecting dust. *sigh* Okay, not quite like my gaming rig then.
* apeiros_
is switching between sublime and bbedit
<apeiros_>
but I think sublime will win
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<Quadlex>
aedorn: Aww, but what do you play FTL on?
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<aedorn>
Quadlex: my work laptop!
<Quadlex>
I like your style.
* Quadlex
awards 5 points
<havenwood>
apeiros_: mm, i've got a sublime license and actually really like the overview-thingy on the right - tempting to use because of OS X, Linux, Win support. But I like TM2.
<apeiros_>
funny, overview-thingy was the first thing I disabled
<shevy>
hehehe
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<brnrdbrk>
exit
<havenwood>
apeiros_: That is the think I like! >.>
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<havenwood>
s/think/thing
<apeiros_>
I should probably search for a plugin which enables a focus mode like eiffel's IDE had
<apeiros_>
it showed you only the current method
<havenwood>
tooling ftw
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<apeiros_>
well, bed time for me
<apeiros_>
gn8
<havenwood>
later
<Spooner>
I turned off the code thumbnail thing in Sublime. It was pretty, but I didn't find it actually useful.
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<havenwood>
Spooner: I found i recognized the shape of spots in the code from the overview. Thats how i do written pages too though. Maybe kinda a synesthesia thing.
<aedorn>
I use the overview to find empty spaces. If there's too much space then there's room for more obfuscation to torture the future with.
<havenwood>
Spooner: Just for larger files.
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<Spooner>
havenwood, I usually edit in a half-width window and it just stopped me seeing 80 columns. It needed to be more useful ;)
<havenwood>
I'd love to have more visualization tools for code. :)
<havenwood>
Spooner: Space is precious.
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<Spooner>
Now Rubymine's Git integration colouring on the sidebar; that is useful!
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<aedorn>
Spooner: so how much RAM does RubyMine really eat?
<Spooner>
I also hard-code a 80 column code width, so my code isn't so obviously raggedy as it might be (so doesn't look so interesting in an overview).
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<Spooner>
It is chunky, but I've never worried about it. Why do I need RAM while I'm editing?
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<havenwood>
Spooner: I sometimes have a twinge of guilt over 78
<aedorn>
You don't ... but I have so many VMs running, I tend to worry about it.
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<havenwood>
aedorn: I think i'd be willing to spare a few gig of ram if the coding experience was substantially improved, but yeah for portability whatev you cant count on resources
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<Spooner>
aedorn, Right. I do use VMs a bit, but only one or two at a time. There was a time when I was developing in Windows when I used to edit with Rubymine in Windows and run tests in a Lubuntu VM because they ran faster!
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<havenwood>
<3 Vagrant
<Spooner>
I just (finally) got a free open-source license for Rubymine. I will buy it if I need it for a large Ruby project though (I'm just using Sublime for short Python&Ruby scripts at the mo).
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<aedorn>
Well, let me quantify "many". An average day requires about 13 to be up. Now doing this on one system is "A Dumb Idea", but some jerk in the cube over likes to keep the temperature at a constant 75, and sitting around a bunch of machines makes my immediate area around 85. I'm trying to avoid local warming.
<Spooner>
Ouch! That is a lot.
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<havenwood>
Virtualize ALL THE THINGS! \o/
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<aedorn>
Yeah... testing network devices becomes a whole different type of beast.
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<Spooner>
aedorn, At least you don't have to recursively virtualise 13 times. The last VM would run as fast as if it was running on a calculator from 1980 ;)
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<aedorn>
Spooner: hmmm... I do love me some HP48g action.
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<Spooner>
havenwood, Ubernerdgirl says "hello!"
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<havenwood>
Spooner: Are you in NYC??
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<Spooner>
Nope, but I have Skype :D
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<havenwood>
Spooner: Aha!
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<shevy>
hmm
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<shevy>
man Spooner
<shevy>
you are like the ruby-teleprompter
<shevy>
"gimme a call, I'll translate your thoughts into ruby code"
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<Spooner>
That was just a paste. One day humanity will link Skype with IRC, but for today, there is cut-and-paste Spooner :D
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<pandawarrior1>
can anyone give an instance when they would use a proc/lambda/block?
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<wildcard1>
pandawarrior1: command pattern
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<pandawarrior1>
i'll look up what that is...
<aedorn>
hmmm.. Skype message redirect
<aedorn>
I could see it
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<havenwood>
pandawarrior1: I'd use block unless there is a compelling reason to do something else. Matz gives block syntactic sugar to make its use sweet.
<shevy>
pandawarrior1 a block is ubiquitous to a method in ruby man
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<shevy>
I use blocks all the time and almost never any procs
<havenwood>
pandawarrior1: If you need to assign a var to your closure, lambda. If you need proc's return, proc.
<pandawarrior1>
is this stuff covered anywhere?
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<pandawarrior1>
i this in the relms of meta type thinking?
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<havenwood>
pandawarrior1: Yeah, there are some good screencasts and blog posts. The best thorough comparison I can think of is a talk Wycatz gave. Sec, i'll find.
<wildcard1>
most of the time i use procs is to name blocks
<wildcard1>
in case you want to pass/call them out of scope
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<pandawarrior1>
1 hour plus :) nice
<havenwood>
wildcard1: Yeah, that is what Yehuda argues for. I'd prefer to use lambda for same return functionality as block. If you need named + loose arity or procs return then proc. Guess it is just preference.
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<havenwood>
wildcard1: Wycatz goes as far as to say he'd prefer lambda be deprecated.
<Quadlex>
Delicious closures
<wildcard1>
hmm
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<wildcard1>
that's interesting. mostly the reason i differentiate is based on the return behavior like you said
<havenwood>
wildcard1: I like lambda. Named block, stabby syntax, win.
<wildcard1>
i'll have to look at the reasons he suggest deprecation
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<wildcard1>
i should look at the way they're implemented too. it maybe give some insight into further differences
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<havenwood>
wildcard1: His point was just that block and proc are sufficient as to what he was discussing. He touched on lambda being odd-man-out with strict arity, but I think since he was discussing tenet's correspondence principle lambda was really irrelvant.
<wildcard1>
ah
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<havenwood>
wildcard1: On the other hand, proc and lambda varying from each other in two non-conflicting ways is the Ruby-way. Wycatz's recommendation of proc could be an interesting debate, since Matz seems to prefer -> unless proc is needed.
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<havenwood>
wildcard1: Actually, I'm more sure that Avdi is in the lambda court than Matz. But I'd like to hear Avdi and Wycatz discuss the issue.
<wildcard1>
i've always looked at them as farly synonymous except for the return behavor. im not sure that i'd develop a strong opinion either way unless i found out that there's some other drastic difference i've overlooped
<havenwood>
wildcard1: strict versus loose arity and return behavior are the only two differences (other than each's pairs of syntax varying) that i know of