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<jonmorehouse>
within eventmachine, is there a way to queue up deferrables? IE: defer1 outputs to defer2
<jonmorehouse>
so that they run in a waterfall like manner?
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<CedroK>
Is there a place where we could watch niggers chimp the fuck out???
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<bufferloss>
hi, so I've been googling a bit, but haven't been able to find a solution for this yet:
<bufferloss>
"No source for ruby-2.0.0-p598 provided with debugger-ruby_core_source gem."
<bufferloss>
I'm on windows 8.1
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<bufferloss>
I've seen this when using RVM on Mac OS X, but I solved it by just installing with --disable-binary
<bufferloss>
however, I'm not sure how to go about solving this on windows, I installed devkit, followed the instructions ala ruby dk.rb init; ruby dk.rb install;
<bufferloss>
is it possible to install the debugger on windows?
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<chipotle>
anyone here try jetbrain's IDEs, either rubymine or intellij?
<chipotle>
what do you think, for someone new to programming and ruby?
<chipotle>
i was using sublime text 3, but the dev has been mia for over a year
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<bufferloss>
chipotle, sublime is just fine, a good majority of devs that I know use sublime (2 and 3)
<chipotle>
bufferloss: yeah, well who knows how much longer it'll last with the dev being unresponsive
<chipotle>
so i wanted to give rubymine or intellij was any good?
<bufferloss>
try it and see
<bufferloss>
I doubt sublime is going anywhere soon
<bufferloss>
unlikely to be entirely abandoned
<chipotle>
i don't think sublime is solely a text editor, since it has a full featured package manager. but i could be wrong
<bufferloss>
and that means... what? not much... what's your point?
<bufferloss>
sublime is fine, if you want to use something else out of fear, go ahead
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<chipotle>
bufferloss: i'm just saying i don't really see a clear distinction between an IDE and text editor, jeeze
<chipotle>
so hostile
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<bufferloss>
you didn't say that, you said something else entirely
<bufferloss>
that is more direct and to the point
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<bufferloss>
an IDE typically provides "language understanding" types of features, as in the IDE will often read the source code and "process" it in a way that the compiler/interpreter would in order to give you "extra" features like completion
<bufferloss>
it's not worth it in my opinion given the bloat you have to deal with by using an editor that's fundamentally built on top of an already bloated piece of Java software
<bufferloss>
though really only you can answer whether you like it, by trying it
<bufferloss>
so, go try it
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<bufferloss>
a text editor is typically seen to be lightweight and mostly language and build system agnostic - it provides facilities for editing text, any text, of any language, rather than focusing on language and compiler/interpreter/environment specific features
<bufferloss>
most people who think they want an IDE just haven't ever used a good text editor, or haven't actually learned the advanced capabilities of the text editor they use
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<chipotle>
i see
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<chipotle>
well, it's a complicated decision, heh
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<bufferloss>
not really
<bufferloss>
just pick one, use it
<bufferloss>
you won't be impacted as much as you think you will
<bufferloss>
especially if you're new
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<chipotle>
what text editor do you use?
<chipotle>
i heard good things about atom, but it's slowww
<bufferloss>
I have a co-worker who uses atom and loves it, but yes, even he acknowleges that it is slow
<bufferloss>
chipotle, you don't want to use the editor I use, trust me
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<chipotle>
vim?
<bufferloss>
chipotle, yup
<chipotle>
heh
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<bufferloss>
chipotle, I use rubymine occasionally for the gui debugger, cuz it's nice, but even then I hardly use it much
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<bufferloss>
puts and binding.pry are good enough for most of my needs
<dunpeal>
basically, I have /dir/bar.rb, from which I'm trying to `require "foo"`, but I want it to required /dir/foo.rb, NOT the gem library foo.rb
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<Senjai>
dunpeal: I dont recommend require_relative, but require_relative
<Senjai>
dunpeal: You should have a better autoload system setup. Your $LOAD_PATH should have your application at the top of it
<chipotle>
do any of you guys use vagrant to develop, or do you do it the old fashion way: VM that you share after taking screenshots?
<Senjai>
chipotle: !use
<helpa>
chipotle: Don't ask "does anyone use <thing>?". It's better to just state your problem and if anyone has used <thing> they will most likely answer.
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<Senjai>
Also, no, no reason to use vagrant
<Senjai>
only when developing on rails for rails
<dunpeal>
Senjai: amazingly, `require_relative "foo"` doesn't work
<Senjai>
dunpeal: You're probably not using it correctly
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<dunpeal>
require_relative 'gettc'
<dunpeal>
inside bar.rb
<Senjai>
dunpeal: I suggest reading the documentation for it.
<dunpeal>
OK, thanks
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<chipotle>
and is railscasts something a beginner should listen to?
<Senjai>
chipotle: Do you know ruby?
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<bufferloss>
chipotle, I've found little need for VMs lately - it was a bigger deal a few years ago
<bufferloss>
chipotle, only real reason to use a VM is if you're on a non-sane OS like windows
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<Senjai>
bufferloss: WE DONT TALK ABOUT HEATHENS HERE
<Senjai>
:P
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<chipotle>
Senjai: i read learn to program by chris pine
<chipotle>
now i'm on chapter one of the well grounded rubyist...
<Senjai>
chipotle: Before thinking about rails, I'd get ruby down unless you're already seasoned in another language.
<Senjai>
chipotle: I would suggest doing rubykoans before reading that book
<Senjai>
I would also suggest programming ruby 2.0 from pragprog over the well grounded rubyist should you choose a book
<chipotle>
why do you recommend rubykoans over that book? i thought it was highly regarded?
<chipotle>
why?
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<chipotle>
they came out with a new edition that supports ruby 2.x
<chipotle>
rather than the first ed that was 1.9
<Senjai>
chipotle: Because, rubykoans is interactive, you work through the examples, a book is a book. rubykoans will tell you if you want to continue with ruby or not
<Senjai>
and gives you a working knowledge faster than a book
<Senjai>
one you can go to rails with.
<bufferloss>
books are overrated these days
<chipotle>
ok
<chipotle>
how long does it take to go through it?
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<Senjai>
If, at that time you want a deeper look, read programming ruby.
<bufferloss>
there's so many good tutorials out there freely available on the internet
<chipotle>
i'm looking at their site now
<Senjai>
chipotle: Our juniors take about a day and a half
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<Senjai>
bufferloss: Eh, I like books
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<Senjai>
bufferloss: Tutorials can teach you SO many bad habits
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<bufferloss>
so can books
<Senjai>
bufferloss: Unless you have someone you work with that can tell you the guy is an idiot
<bufferloss>
indeed, same with books
<Senjai>
bufferloss: Correct, but books are typically more peer reviewed and complete.
<vandemar>
pragprog doesn't drm-cripple their books
<chipotle>
*why not wh
<Senjai>
Because you also get the pdf, + free updates, + in any format for any reader, + pragprog is an AWESOME company headed up by dave thomas
<Senjai>
+ drm free as mentioned
<chipotle>
ah, okay
<Senjai>
and amazon rapes publishers, which in turn have to rape authors
<chipotle>
how long is it on average, that i'll be good enough with ruby to do some rails or sinatra and build a simple web app?
<chipotle>
(i have a drupal dev background, trying to learn something nicer for the future)
<Senjai>
chipotle: Avoid sinatra, really. It's good for specialized things, but you'll have to generate a lot of boilerplate
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<Senjai>
chipotle: Iuno, depends on the definition of simple.
<Senjai>
and your ability to learn
<Senjai>
I wouldnt even ask the question
<Senjai>
just do what you want to
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<Senjai>
if you dont want to learn it, dont :/
<chipotle>
Senjai: oh, i thought the opposite; sinatra was well liked and rails was losing favor
<chipotle>
ok, i'll stick to rails!
<Senjai>
rails is certainly not losing favor.. Sinatra is well liked, but its lower level then I'd advise. It's pretty much just a wrapper for rack.
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<vim-shim>
I teach at a web dev boot camp, and we get our students to make a command-line app, a sinatra app, and then finally do it in rails so they can appreciate all the magic they're getting in the background for free.
<chipotle>
how do you recommend learning rails?
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<chipotle>
what i mean by simple, basically a forward facing marketing website for a b2b company using twitter bootstrap
<chipotle>
that's basically what i do now in drupal
<longfeet>
aw fuk i want some chipotle but they closed 2 hours ago
<chipotle>
longfeet: ilu2
<Senjai>
vim-shim: Sinatra is totally not necessary imo
<Senjai>
chipotle: write code. It's that simple.
<longfeet>
also i ran of chipotle-away
<vim-shim>
It's a nice way to make them pay attention to the request/reponse model and put their toes in the water without all of Rails.
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<chipotle>
what's considered a good book for learning rails once i have ruby down?
<Senjai>
vim-shim: I mean, I guess. But once you step into rails, a large amount of that is stuff you never need to think about for a very long time.
<Senjai>
Until you need custom middleware and the like
<Senjai>
chipotle: Not agile web development with rails
<vim-shim>
Anyone that ever got halfways good at Ruby or Rails has read the docs until they can recite method families in their sleep. If you want to learn it, you have to make yourself like it.
<bufferloss>
so I guess you didn't click that one then
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<chipotle>
well, there is a MEAP of rails 4 in action, so i bought that. thanks all
<bufferloss>
zomg
<chipotle>
bufferloss: yes i did!
<chipotle>
if you go to that page, it asks you to sign in or sign up!!
<bufferloss>
uhh, wtf are you talking about, rails guides doesn't require sign up
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<bufferloss>
chipotle, you know what you are? you're an askhole... a person who asks questions but doesn't actually care about the answers and just does what he wants or was originally going to do anyway
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<bufferloss>
"hey what's your opinion on foo? ok cool I don't care I did bar anyway"
<bufferloss>
chipotle, go write some code, for serious
<vim-shim>
wax on, wax off!
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<chipotle>
bufferloss: what the fuck are you talking about? i downloaded rubykoans and i bought the rails 4 book as a MEAP from manning. neither of which i heard of before coming here. before coming here i had the well grounded rubyist and planned to use that
<vim-shim>
Even retyping source code is better that agonizing over which book to read first or next.
<chipotle>
you could just chill out
<Senjai>
chipotle: !gts
<helpa>
chipotle: When you think we're not being helpful, or helpful enough.. See this: http://youtu.be/N9rJJSiUy0I
<chipotle>
and then you call me a liar because when i go to a page you linked, it asks you to sign up
<bufferloss>
chipotle, I'm talking about the fact that you obviously didn't take the 2 seconds require to go look at this page guides.rubyonrails.org/getting_started.html
<bufferloss>
chipotle, NO guides.rubyonrails.org/getting_started.html does NOT fucking require sign up you fool
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<vim-shim>
still better than ##javacript
<timanema>
vim-shim: I left that place because of bad questions but if there are lots of js fights maybe I will go back
<timanema>
vim-shim: War of the Frameworks
<bufferloss>
rails vs sinatra... discuss...
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<timanema>
bufferloss: each are a tool to be used in specific situtaions
<timanema>
like all tools
<timanema>
you dont use a hammer on a screw
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<bufferloss>
C++ vs Zend Framework vs websockets... discuss...
<Senjai>
bufferloss: Rails is just sinatra++, When you dont need rails, sinatra is fine
<vim-shim>
When all you have is an omakase framework...
<Senjai>
bufferloss: lolwhat
<bufferloss>
:)
<bufferloss>
WebGL vs MySQL... discuss
<vim-shim>
If you make anything remotely complex you're going to wind up want most of the rails goodies anyways, that said, I like wrapping utilities in small Sinatra apps.
<Senjai>
MySQL can run without a browser, therefore better
<vim-shim>
Also, it's declarative.
<bufferloss>
but webgl is 2.0 compatible!
<Senjai>
bufferloss: But it's not webscale
<bufferloss>
damn, you got me
<bufferloss>
wait, you're wrong, it's not webscale, but it *is* webscales!
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<Senjai>
plop!
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<chipotle>
hey Senjai !
<chipotle>
how are you?
<chipotle>
i've been coding :)
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<shevy>
in php?
<vandemar>
last line of about_symbols.rb "Why is it not a good idea to dynamically create a lot of symbols?" is that refering only to ruby pre-2.2?
<shevy>
symbols will not be garbage collected vandemar
<vandemar>
that's changed with 2.2 hasn't it?
<shevy>
hmm
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<vandemar>
if that's the reason, koans must be updated!
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<jY>
pretty new to ruby.. is there a one liner to do like if i have "/path/to/foo/bar" have it become "/path/to/foo" pretty much remove the last dir in a string
<shevy>
vandemar are you sure that it has changed?
<porfa>
so, blablab.at_css(‘.lol’) has some text elements.. how can i fetch only the first text element or the second?
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<porfa>
name="span" children=[#<Nokogiri::XML::Text:0x155a784 "69€">]> and name="span" children=[#<Nokogiri::XML::Text:0x155a004 "90€">] if i do balbalbal.text it outputs me both.. i only want to get the first,
<porfa>
i tried .first.value but no lucky
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<borromakot>
Hey guys, say I have a hash who's keys are objects, is there a way to have them not be instantiated unless they are accessed? For instance hash = {"key1" => Thing1.new(), "key2" => Thing2.new()} I don't want :new sent to Thing1 until I say hash["key1"].
<porfa>
!!! found it, ('.productPvp span[2]') for second and ('.productPvp span[1]’) for first!
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<shevy>
borromakot not from a direct hash I think; you could write a custom hash where you overrule the access-part
<shevy>
borromakot and then use a proc and run .call on it
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<arietis>
hey guys
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<arietis>
i'm writing simple script in which i want to take some params from terminal input
<arietis>
how do i get input values?
<shevy>
commandline arguments are available in the array ARGV
<shevy>
it is better if you give the example how you invoke it
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<arietis>
i do not want arguments, i want the script to ask for values via prompt
<Perceptes>
arietis: look into Kernel#gets
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<shevy>
ah you want user input
<arietis>
yeah, thanks, gets works :)
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<ekem>
yeah wanted to make sure google couldnt solve it before i went full irc
<jhass>
/libffi-3.2.1/.libs/libffi.a
<jhass>
that thing
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<jhass>
you need to recompile it with that flag
<jhass>
not the thing that throws the error
<wow>
Hi guys! I want to learn how to program in Ruby. I have a basic understanding of C and Scheme. Is there some sort of de facto reference book or a tutorial?
<ekem>
maybe this is a linux question not a ruby question at this point, not sure how to do that with a package manager
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<ekem>
is it possible or just compile that sucker elsewhere
<ddv>
Just do a simple Google search..... wow. The Ruby Progamming Language book is pretty good
<wow>
Okay, thank you ;-)
<ekem>
check stack overflow wow, there should be one question answering that
<wow>
I usually refrain from going on stack overflow after seeing how people answer questions(in C at least)
<ddv>
wow, You should try to use Google for everything in life
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<ekem>
well, dont ask a question just search
<wow>
No, I mean other questions
<ekem>
that will be a topic that gets closed real quick
<wow>
The answers to them seem strange and lenghty
<wow>
lengthy*
<ekem>
hehe, be thankful :)
<wow>
What about codecademy?
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<ekem>
all resources are good resources man
<ddv>
pick a book, develop something all you need
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<wow>
Alright, thanks.
<ekem>
irc bots are a good place to start btw ;)
<wow>
Cool! I have already made a little TCP server in Ruby
<wow>
like a login
<ekem>
wow++
<shock_one>
Hi. I have 4 users. Now, I want to perform a hundred tasks each of which requires a user. However, it must not happen that two threads use the same user at the same time. A thread should take a user from a pool, perform its job, and return the (updated)user back. Only after that the user can be taken again. The closest thing I've found is Celluloid PoolManager, but it seems that PoolManager doesn't allow to obtain objects from the pool of fr
<shock_one>
ee ones and then release them; instead it assumes that objects in the pool are stateless, and therefore equall. Can you point me to any solution?
<wow>
shock_one: You are a fast typer?
<shock_one>
I prepared my message in VIM, because it allows me to edit quickly.
<crome>
shock_one: if you want something really simple just use a threadsafe queue, pop users from it and then put them back once a job is finished
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<jhass>
shock_one: I'd just use a Queue, pop and unshift it back when done
<jhass>
ah, too slow
<crome>
nice try ;)
<shock_one>
crome: I would like the solution to incorporate handling of the situation when there is no free objects in the queue. Maybe to lock till it gets one.
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<jhass>
but it's also commonly used as name for a thread safe datastructure
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<shock_one>
Ideally, I'd like the data structure to provide random access, but FIFO is acceptable.
<jhass>
that blocks on operations that obtain an element
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<jhass>
well, you could fairly easily code that with an array, a marker whether the user is given out and a condition variable
<jhass>
a multi-lock so to say
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<shock_one>
That part is easy. But now I need to lock till an objects gets in manually, and raise after a timeout, and maybe something else unexpected. A big deal.
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<wow>
this may not be ruby related but where can i learn the .wav format so i can write to audio files using ruby
<jhass>
raising after a timeout is inherently thread unsfafe
<jhass>
don't do it
<crome>
wow: on google
<wow>
crome: i tried searching and i couldn't find anything relevant
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<shock_one>
You see, I'd have a problem already.
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<jhass>
wow: I think there's a gem or too, the format is called PCM iirc, so try rubygems.org with those terms and read the code (or just use one)
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<wow>
eam: My bot will connect without warnings or errors BUT
<wow>
my program doesn't work as expected
<wow>
if I type !8ball it won't react
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<eam>
wow: how familiar are you with so-called printf debugging?
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<axilla>
morning all, i'm trying to retrieve some data from an API and display images that i get back.. if i search for a single album it works just fine, but if i search for just a band i get a [] nil:nilclass error https://gist.github.com/travisdmathis/8d9f19291d3fc0bc4fa5
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<axilla>
in the gist i put the output of the search to console and am getting the right data back
<axilla>
so why when i go to display it in my view do i get an error.
<axilla>
if i remove the image it displays the search data just fine.
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<jhass>
axilla: maybe take a look at the full trace on the rails error page
<jhass>
it's hard to guess where exactly the error is happening from your gist
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<axilla>
i did, i'm not understanding why its throwing an error at all
<axilla>
the data is all there
<jhass>
what's the last line of the full trace?
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<axilla>
i added the full trace to the gist
<axilla>
refresh
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<__chris>
does ruby support ?: ternary? for example: foo = some_nil_value ?: 10
<__chris>
im aware of || but that will return the nil value as well
<jhass>
wow: also note that @sock.close will be called at the point you define the literal, not when you access the value
<jhass>
wow: you might want to assign a lambda or a proc there instead
<axilla>
there is a nil value for the cover if it doesn't exist
<axilla>
i check for cover.blank? and set cover to a image
<axilla>
but still same issue
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<jhass>
axilla: I still don't really know your real line numbers, but I guess that the error is happening on line 6 of your gist, before you even output the values
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<jhass>
axilla: my suspicion is that mbid.first is nil because mbid is an empty array
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<axilla>
line 9 sorry is cover = coverart_archive
<jhass>
yes, so as I said
<axilla>
right..
<axilla>
two people say that now
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<axilla>
interesting
<axilla>
not sure how that is.
<jhass>
oh fuck
<jhass>
how rude
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<jhass>
axilla: Please do not crosspost without at least telling so. Experience shows that people don't bother to inform the other channels of provided solutions, therefore it is considered rude.
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<bmuk>
Hello all, trying to set up wagn, and wagn seed is complaining that it can't find jasmine. I have tried to export RUBYLIB=$(which jasmine) to no avial
<bmuk>
avail*
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<__chris>
i dont understand the difference between arr.map and arr.collect.. could someone explain it to me?
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<jhass>
__chris: collect is 4 chars more to type
<jhass>
they're aliases ;)
<__chris>
jhass, ah, ok. thanks.
<wow>
This gives me an error
<wow>
if user.eql? @logininfo[0] && password.eql? @logininfo[1]
<wow>
unexpected tIVAR, expecting keyword_then or ';' or '\n'
<__chris>
i must be blind or just confused by the docs. Under the "map" section it shows an example using collect. Its clear to me now. thanks
<jhass>
wow: you need parens around the method calls in this case
<axilla>
jhass: thanks tracked down the issue, you were right, when trying to get the mbid for a release the release doesn't exist in the database i'm using
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<argoneus>
hello
<argoneus>
is there a small and simple framework? I need a page with login/logout and a page to add/delete items which will be added/removed from db too
<argoneus>
rails seems too powerful for this
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<jhass>
many, most popular is sinatra
<epitron>
Sinatra with http basic authentication is was simpler, argoneus
<argoneus>
so instead of the pythonic all in one frameworks
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<epitron>
Including forms
<argoneus>
I use sinatra for the web, haml for the templates, etc?
<epitron>
Kinda
<epitron>
Sinatra supports it natively
<jhass>
sinatra supports temple which supports about every templating language you know and don't know ;)
<epitron>
But you can choose
<argoneus>
oh nice
<wow>
jhass: I have a question
<wow>
I've created a TCP server
<wow>
is it possible for the client that connects to it to download files?
<epitron>
You just say, "haml :file" at the end of the method to render that file
<epitron>
Or "erb :file"
<argoneus>
and what about SQL / SQLite interfacing?
<epitron>
Or sass, etc
<argoneus>
does sinatra do that too or do I need something more
<jhass>
wow: TCP sends bytes back in forth, the contents and structure of those bytes is up to your application
<epitron>
No, that's not built in
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<jhass>
you can easily use something like Sequel with it for that though
<epitron>
You need to use active record or sequel or something manually
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<epitron>
What's that other one
<epitron>
It's like ar, but with different migrations
<jhass>
sequel has migrations too
<epitron>
Datamapper
<epitron>
That one makes more sense than AR or sequel I think
<epitron>
Sequel is too simple, and AR is too complex
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<jhass>
I don't find Sequel too simple
<jhass>
you can do models too
<epitron>
Oh wait
<epitron>
Yes :)
<ellisTAA>
i need to add two instance variables to a hash. i’m trying this name_of_hash [:@variable1] = @variable 2 …. but when i try that it just enters @variable1 & @variable 2
<epitron>
DM has migrations though
<epitron>
argoneus: what's your data model look like?
<jhass>
ellisTAA: without the space before the [
<argoneus>
epitron: nothing fancy, my site is basically something like
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<argoneus>
a database of usernames which a separate script grabs info for and saves it to the db, and a website frontend that shows this list and the info, and a simple admin interface to add/remove usernames from the db
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<ellisTAA>
jhass: i acutally wrote it without the space…
<argoneus>
I'm going to the first part with python because scraping with that is really easily
<argoneus>
and I wanted to try using ruby for the website thing
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<argoneus>
but I've never really done this before and I'm not sure what would be a good idea to start with, I worked with Flask before
<jhass>
ellisTAA: then maybe make a gist with actual code that illustrates your issue and your expected behavior
<wow>
if an index, let's say at 9 in a string does not exist
<epitron>
argoneus: It's 6 years old, so some Sinatra things may have changed, but it should give you a good idea of how to do what you want
<wow>
so jhass
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<wow>
what does test if a script is nil
<wow>
var*
<wow>
variable*
<argoneus>
oh
<argoneus>
thanks epitron
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<jhass>
ellisTAA: the key should be the value of @keyword, not the symbol :@keyword
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<jhass>
wow: just if foo to test if it's not nil or false and if foo.nil? to test whether its value is nil
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<wow>
okay jhass
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<wow>
that seemed to fix it
<wow>
but
<ellisTAA>
jhass: thanks
<wow>
Download attempt ... never gets executed
<wow>
if it isn't nil
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<epitron>
argoneus: I mean, it still works out of the box, but there may be a couple new Sinatra things that make things look a tiny bit prettier
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<jhass>
wow: how to you verify that assumption?
<argoneus>
epitron: you used raw css?
<trampi>
rubocop rates this method as too complex :-/ (Assignment Branch Condition size for create is too high. 17.15) https://gist.github.com/trampi/82048ddf6d87cf07c68a any ideas how to make it simpler?
<wow>
jhass
<wow>
if I type download it will work
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<wow>
com[9].nil? is executed because it is nil
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<wow>
but if I do something such as
<wow>
download file
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<wow>
it will give me the invalid command thing that is parsed
<epitron>
argoneus: I just stole it from canonical's website :)
<epitron>
Copy paste
<argoneus>
oh
<argoneus>
I'm still confused about all these things
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<argoneus>
like sass, coffeescript, rakefiles, sinatra
<argoneus>
how to make them work together
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<argoneus>
I should probably figure that out first
<jhass>
wow: that's because com.casecmp("download") isn't a partial comparision, it wants exactly that string
<epitron>
Those are all templates
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<jhass>
wow: you may want command.downcase.start_with? "download"
<epitron>
Except rake and Sinatra
<epitron>
:)
<argoneus>
is rakefile like a makefile but for ruby?
<wow>
Thank you jhass.
<argoneus>
so I have all the source files etc
<argoneus>
and the rakefile compiles them to proper things?
<epitron>
No..
<argoneus>
I mean
<argoneus>
like I have a .sass
<epitron>
Rake is just for running scripts
<argoneus>
and I tell it "compile the sass and put it in this dir"
<argoneus>
like that?
<epitron>
It could compile your sass
<wow>
One more question
<wow>
How do I transfer raw bytes, such as maybe an mp3 file to a client?
<epitron>
But people use rake to do any admin task
<argoneus>
admin task such as..?
<epitron>
Running tests, making gems...
<argoneus>
ah
<argoneus>
hmm
<epitron>
Cleaning up databases
<argoneus>
ruby seems interesting
<epitron>
Running migrations
<argoneus>
does Sinatra give me a clear folder structure?
<jhass>
wow: bytes or buffers are in ruby represented through a string with the encoding ASCII-8bit (which is also aliased to binary)
<epitron>
Yep
<argoneus>
oki
<argoneus>
thanks I'll check it out later
<epitron>
Views, public, lib
<argoneus>
these are things I can read in a tutorial probably
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<epitron>
Yep
<jhass>
wow: so File.read('foo.mp3', encoding: 'ASCII-8bit') should give you a string that you can send over the socket
<wow>
but doesn't the user require permission to send that?
<wow>
receive it*
<epitron>
Can't you just read it in binary mode?
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<jhass>
wow: "the user"?
<wow>
let's say someone connects to my server
<wow>
they want to download something from it
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<wow>
wouldn't they need elevated permissions for them to receive it?
<wow>
they're receiving files from an otherwise unknown host
<jhass>
again, tcp just shuffles bytes from one end to the other
<wow>
okay.
<wow>
but where is that file saved?
<jhass>
it's up to the client & server implementations when to send bytes, when to receive bytes and what to do with them
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<wow>
D:
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<jhass>
it sounds like you maybe want a higher level protocol like ftp or sftp
<wow>
not really
<jhass>
or even just http
<wow>
I wanted to make my own protocol, for an ARG
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<jhass>
so, that question you asked is exactly what you need to answer in the protocol design
<shevy>
jhass are you working on some project?
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<jhass>
shevy: toying with writing an IRC bot in crystal
<jhass>
it can already run crystal code in a sandbox :P
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<epitron>
Crystal? :O
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<__chris>
is %w() the convention or is %w{} ? In practice i usually see %w() but in the docs i see %w{}
<epitron>
Is that like a generalization of ruby?
<jhass>
epitron: no, own language we heavily ruby inspired syntax
<epitron>
__chris: my convention is %w[]
<jhass>
epitron: but statically typed and compiled to native code
<jhass>
epitron: plus type interference
<epitron>
Because it returns an array :)
<jhass>
so it feels sort of like ruby except that it's 20-50x faster :D
<shevy>
__chris I use %w() consistently
<wow>
so jhass
<wow>
how do I store the file in the current directory of the client?
<shevy>
__chris I dislike %w{} because it is syntax for hash and blocks
<shevy>
__chris %w also works :)
<__chris>
epitron, shevy - thanks. so it seems like there is no "wrong" answer here..
<jhass>
wow: you receive it into a string with encoding ASCII-8bit again, and then you can just write that string into a file with File.write
<shevy>
the ruby parser accepts a lot
<shevy>
it's a liberal thing
<wow>
okay, thank you
<shevy>
not like the python parser, this one is strict
<epitron>
jhass: that sounds neat
<epitron>
Link?
<jhass>
epitron: crystal-lang.org
<wow>
so jhass
<wow>
the client will be able to get the download by telnet or netcat?
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<shevy>
50x faster
<shevy>
then it will destroy ruby
<jhass>
epitron: good state in case you wanted to contribute to a languages standard library btw ;)
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<jhass>
epitron: still lots of holes to fill out, but the language itself starts to be usable
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<jhass>
epitron: did I mention that crystal is entirely written in crystal? ;)
<wow>
jhass: will client be able to receive it with telnet?
<jhass>
wow: that depends on how you define the protocol
<wow>
the UNIX implementation of telnet to be specific
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<jhass>
not that telnet is kind of weird protocol
<epitron>
jhass: neat!
<jhass>
partially because it's very old
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<jhass>
*note
<wow>
will it work regardless?
<jhass>
you can make it work, it's your protocol
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<trampi>
crystal seems VERY interesting
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<trampi>
a "low-weight" compiled language
<shevy>
I used telnet to play MUDs in the old days
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<shevy>
we had a green font on a black background
<epitron>
jhass: how long have you been making this?
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<jhass>
epitron: I think they started about 2-3 years ago, first with a compiler written in ruby from which they bootstrapped the compiler written in crystal
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<jhass>
they generate llvm bytecode and then just call llvm, so you can get tons of optimizations for free
<nobitanobi>
morning folks
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<nobitanobi>
given that I have an array A=[1,2,3] and a set of arrays B = [[3], [1,2], [1], [3,2,1]] - How could I order that second set so that the order is based on how many elements in each array appear in the array A?
<nobitanobi>
So the final order of B would be [[3,2,1], [1,2], [3], [1]]
<jhass>
you mean if in B there would be a 4, it would not count?
<wow>
jhass
<nobitanobi>
yep
<wow>
I understand you write it in a file
<wow>
but how do I write it in a file over a socket
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<nobitanobi>
trying to find the most similar arrays given an array
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<nobitanobi>
similarity being how many elements appear in the given array
<jhass>
nobitanobi: how would duplicates in B count, like [1, 1, 2 3] vs [1, 2, 3]
<nobitanobi>
no duplications allowed
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<jhass>
.sort_by {|b| (a & b).size }.reverse I think
<wow>
jhass?
<jhass>
wow: first you receive it into a string
<jhass>
then you write the string
<nobitanobi>
jhass: thanks
<nobitanobi>
will try
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<wow>
file = File.read("mpfile.mp3", encoding: 'ASCII-8bit') is what im currently doing
<wow>
i understand you write the string, but where?
<jhass>
nobitanobi: maybe b & a actually
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<nobitanobi>
thanks :)
<jhass>
wow: just like you send regular string to the socket
<_2_Michelle1123>
hi
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<nobitanobi>
it works jhass
<nobitanobi>
awesome
<jhass>
wow: it's an IO iirc, so you got .write .puts etc
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<_2_Michelle1123>
ok
<wow>
client.puts file
<wow>
?
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<wow>
where file is the File.read thing
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<jhass>
for example
<jhass>
not that puts adds a newline
<jhass>
*note
<jhass>
can't type today :/
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<wow>
eh
<wow>
i'll just do client.write then
<wow>
shouldn't append a newline
<ellisTAA>
can someone take a look at my gist and tell me if line 13 in spec.rb is a string or a hash? it looks like a hash bc it has => but the key isn’t using a symbol … https://gist.github.com/ellisTAA/af3ed9555ba32ed2c467
<wow>
that will work, right?
<jhass>
ellisTAA: it's a hash, any ruby object can be a hash key, not jsut symbols
<ellisTAA>
jhass: thank you
<jhass>
in this case the key is a string
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<wow>
jhass
<wow>
client.write file
<wow>
will that casue any problems
<wow>
before i try it
<jhass>
wow: I'm not your potential problem predictor, we all learned through trial and error ;)
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<wow>
will it wipe out my /dev/sr0
<wow>
?
<jhass>
wut?
<jhass>
what makes you think it could do that?
<wow>
I was right
<wow>
It wiped out my entire system
<jhass>
right...
<wow>
Luckily I was in a sandbox :)
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<jhass>
/dev/sr0 is your cd drive, if you troll, do it right ;)
<wow>
okay
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<wow>
will .wav files work as well?
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<jhass>
are .wav files bytes?
<wow>
well every file has bytes
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<jhass>
and tcp does nothing but transporting a sequence of bytes from one end to the other ;)
<wow>
the beauty of TCP
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<jhass>
yap, that's a bunch of bytes written to your pty
<wow>
I meant for the user to download it
<wow>
This is a download yes,
<wow>
transfering bytes
<wow>
but how do I write all this to a file on the users end?
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<jhass>
by writing a client that supports your protocol and does that, or by implementing a protocol on the server side the user already has a client for that does that
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<jhass>
you might get away with just redirecting stdout on the client side to some filee
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<jhass>
makes it hard to display messages to the user though
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<wow>
so telnet can't write transferred byte to files?
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<jhass>
I don't know
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<jhass>
it probably can, it's a weird protocol
<jhass>
I never grasped it
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<wow>
okay
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<wow>
hmm
<wow>
zmodem and xmodem
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<wow>
is there also something in ruby that redirects IO
<wow>
so that it doesn't interrupt me inputting while my server is outputting things that are happening
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<ellisTAA>
hamster88: i’m using beginning ruby by peter cooper. rubymonk.com also helped me
<hamster88>
thank you ellisTAA , one more question, i don't like PHP much cos of its security flaws. So i can use the ruby on rails instead of it am i right?
<hamster88>
i mean i can use it ruby on rails for web development things... right?
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<ellisTAA>
can u use RoR for web development? yeah i’m pretty sure. i’m new to all of this as well
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<hamster88>
I am developing a few new projects
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<hamster88>
so I am thought why not to start with ruby and give php a break
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<ellisTAA>
good luck with it
<hamster88>
thanks to you too :)
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<hamster88>
how did you find ruby as a language.. easy hard or normal?
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<jhass>
ellisTAA: merge takes a hash, you pass it a string. Your input is a hash, you handle it as if it's a string
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<jhass>
or it's a hash or a string rather
<jhass>
>> "foo" + nil
<eval-in_>
jhass => no implicit conversion of nil into String (TypeError) ... (https://eval.in/255053)
<jhass>
and that's that
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<ellisTAA>
jhass: i figured, hey this input could be a hash, if it is just merge it. why can’t i just write .merge(input) if input is a hash?
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<shevy>
you know how this will end
<shevy>
atmosx won't understand a thing when I try to explain
<jhass>
mmh
<shevy>
do you really want to put him through this jhass
<shevy>
:-)
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* jhass
checks if he has popcorn
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<jhass>
I think so, yes
<shevy>
atmosx ok so jhass keeps track of the iteration level through the variable n, which is half the size of the array; then he compares it to 0
<shevy>
as input to slicer() he passes the Array [1, 2, 3, 4, 5, 6, 7, 8]
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<shevy>
and inside after the : he invokes itself, with a different array range
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<shevy>
atmosx wake up
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<shevy>
aaaatmoooooosx!
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<shevy>
he is gone :(
<weaksauce>
shevy the base case is a little more subtle and might be confusing for a newbie. it relies on integer division vs floating point division. so size/2 is 0 when size is 1... 1/2 == 0 but 1/2.0 == 0.5
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<ddv>
hehe
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<argoneus>
hello
<argoneus>
can you use Thin along Apache?
<argoneus>
I use apache for some python stuff
<atmosx>
weaksauce: for an algorithm implementation
<argoneus>
and I read that Thin is good for ruby, but I don't want it to be too difficult, it's just a simple page
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<atmosx>
jhass shevy thanks I'll work on it, sorry gf is here :-P
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<atmosx>
argoneus: you can.
<atmosx>
argoneus: but you're better off with nginx
<jhass>
argoneus: yes, and thin, unicorn, puma, shouldn't make a difference
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<argoneus>
so wait
<argoneus>
I have Apache running, serving some documentroots and virtual servers on port 80 etc
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<mozzarella>
what's better, thin or puma?
<argoneus>
how do I get a simple ruby application running alongside that, then?
<argoneus>
on example.com/myrubything
<argoneus>
for example
<jhass>
imo puma though thin does stuff puma doesn't support iirc
<argoneus>
do I need to mess with apache?
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<jhass>
argoneus: a bit, easiest is you pick one of the above mentioned application servers, let it listen on a unix socket or port > 1024 and let apache reverse proxy requests to it
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<argoneus>
jhass: won't that make the site public on the specified port too?
<Rylee>
i was going to type a response, but jhass's kicked ass
<Rylee>
argoneus: not if you make it listen on 127.0.0.1
<argoneus>
ohhh
<argoneus>
nice
<Rylee>
and *only* 127.0.0.1
<argoneus>
thanks!
<jhass>
argoneus: or a unix socket
<Rylee>
yes
<argoneus>
that makes sense
<argoneus>
so basically what will happen is
<jhass>
argoneus: or be a good sysadmin and use a paketfilter
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<jhass>
that whitelists ports you want public
<argoneus>
user requests example.com, it will ask wsgi to give it some python thing
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<argoneus>
and if it goes to example.com/rubything, apache will know that for this page it should ask localhost:1234 for response
<argoneus>
and does that?
<Rylee>
depends on your setup, but probably
<argoneus>
I see
<argoneus>
thanks!
<Rylee>
Google will be of mcuh help here
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<shevy>
:D
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<arup_r>
shevy: I am now writing CSS..Jquery :(
<shevy>
css is ok or?
<shevy>
jquery is... $().call() bla ?
<shevy>
arup_r you'll be a rich man with 10 kids
<arup_r>
:p
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<arup_r>
why adding so many kids in my bucket ?
<arup_r>
Jquery is OK.. css.. is wired for me
<arup_r>
:(
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<shevy>
arup_r so you got some extra reasons to work!
<shevy>
I found CSS rather simple
<shevy>
it's all about padding, boxing, and margining
<shevy>
:D
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<arup_r>
Humm
<arup_r>
What's the best tutorial to learn CSS, shevy: ? I am writing CSS without knowing A B C D of it.. :p
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<shevy>
dunno
<shevy>
been so many years
<shevy>
oh he is gone
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<ellisTAA>
do i always have to initialize an instance variable? or can i just create the instance variable in the class?
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<weaksauce>
you need to initialize it to something before calling a method on it yeah.
<shevy>
ellisTAA there is a difference between
<shevy>
class Foo; @bar = 5
<shevy>
and
<shevy>
class Foo; def initialize; @bar = 5
<ellisTAA>
weaksauce: is the only way to initialize it using def initialize?
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<ellisTAA>
shevy: what is the difference?
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<shevy>
ellisTAA the first one defines it the class instance of Foo itself; the second if you instantiate an object of class Foo via my_object = Foo.new
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<weaksauce>
no. you can do it in any method if you are careful but it's a good idea to do it in the initialize function while you are learning things.
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<ellisTAA>
i see
<ellisTAA>
thanks
<ellisTAA>
what is this topic called? so i can read more about it
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<__chris>
what should I use to watch a rb file and then run it when it changes?
<weaksauce>
__chris guard should do it
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<__chris>
weaksauce, ok cool thanks
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<weaksauce>
ellisTAA instantiation of a class, and look at constructors
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<ellisTAA>
weaksauce: ty
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<ellisTAA>
is the only reason to initialize variables because those values are given when an instance of a class is created?
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<atmosx>
jhass: I have too many questions
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<ellisTAA>
what do pipes mean if they come before an equal sign, e.g. @@neo ||= Neography::Rest.new()
<atmosx>
especially with regarding notation -> [slicer(array[0, n]), slicer(array[n, n+1])] ... From what I understand this is creating a new array at each iteration. What I don't get is how exactly the iteration happens
<atmosx>
ellisTAA: if @@neo is not defined yet, assign Neography::Rest.new() to it
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<ellisTAA>
thats what the pipes mean?
<atmosx>
ellisTAA: when used like this yes
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<ellisTAA>
ty ty ty
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<nahtnam>
I want to create a bot that goes on the steam community. The problem is that I have to simulate mouse clicks. I was wondering if you guys knew how to simulate the clicks. (A gem would be great)
<shevy>
it probably is not technically a "mouse click" - you just set to the target, then invoke .click() on it :)
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<weaksauce>
ellisTAA variable ||= "something" is shorthand for this: variable = variable || "something which means that if variable is nil it will be like this: variable = nil || "something
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<weaksauce>
"
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<weaksauce>
^ explains it much better than I could
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<havenwood>
user083: Nice, that's neat. Use snake_case instead of headlessCamelCase for methods, so `h_tree` instead of `hTree`. Put spaces after commas and between mathy stuffs. Drop the Hash rocket when the key is a Symbol, so `y2: y` instead of `:y2 => y` and `target: STDOUT` instead of `:target => STDOUT`, etc.
<havenwood>
user083: That H-tree is neat looking.
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<havenwood>
user083: `level.even?` instead of `level % 2 == 0`
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<havenwood>
user083: It'd be good to extract and DRY up the duplicate parts of the if statement.
<havenwood>
user083: It's fine to divide by a Float like you are, but you could also use #fdiv like `length.fdiv(2)`.
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<weaksauce>
I'd probably make it a class and extract all the constant stuff into instance variables xml, and starting_length being the two main offenders
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<weaksauce>
and I prefer guard statements at the top of the method. return if level == 0 reads more intentional
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<weaksauce>
and keeps the indentation down
<havenwood>
user083: I slightly prefer `length.pred` to `length - 1`.
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<havenwood>
weaksauce: agreed, but I vote `level.zero?` :P
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<user083>
Are thouse methods faster?
<weaksauce>
ruby has a method for everything eh?
<user083>
than using math?
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<weaksauce>
user083 probably
<weaksauce>
level.zero? is going to be a raw c call so that's likely pretty fast.
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<weaksauce>
and then it's going to be a symbol lookup
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<weaksauce>
sorry id lookup for whatever 0 is
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<epitron>
jhass: i like how easy it is to do C bindings in crystal
<weaksauce>
turns out 0 has an object_id of 1, neat.
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<user083>
q
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<jhass>
epitron: yeah :)
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<jhass>
there's a #crystal-lang that could use some more population btw :P
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<weaksauce>
ellisTAA eloquent ruby is a really good book but I fear that it may fall into the advanced category
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<ellisTAA>
weaksauce: thanks … any ideas on a book about intermediate ruby?
<weaksauce>
if you read and understand all of beginning ruby it should be a solid foundation by the looks of it.
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<weaksauce>
ellisTAA the well grounded rubyist is pretty thorough
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<ellisTAA>
cool
<ellisTAA>
should i read the well grounded rubyist before eloquent Ruby?
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<havenwood>
ellisTAA: The Ruby Programming Language and The Well-Grounded Rubyist, Second Edition are both good options.
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<weaksauce>
I hear good things about the pickaxe book as well.
<ellisTAA>
cool thanks
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<vandemar>
does anyone use the beencode gem? It seems extremely slow. The same structure/object in yaml format takes a couple seconds to load, beencode takes over 20 minutes to load.
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<ellisTAA>
can i ask a big programming question?
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<user083>
ellisTAA: yes
<ellisTAA>
what is the purpose of classifying data as belonging to a specific class?
<ellisTAA>
why create different classes for data like string num range etc
<ellisTAA>
not range, i meant hash
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<ellisTAA>
i guess one reason is that an operation can treat the data differently based on what kind of class it belongs to, but is there any other reason
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<apeiros_>
ellisTAA: because many things are different. how the data is stored. how it is accessed. what you can do with it.
<apeiros_>
though, it's more often different how you do something with it, than what.
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<ellisTAA>
so should i learn about the differences between how different data is stored?
<ellisTAA>
accessed etc
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<apeiros_>
it's valuable knowledge. more important are the properties of the differences.
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<apeiros_>
e.g. that looking up a key in a hash is O(1) (constant time) whereas finding a key in an array of key/value arrays is O(n) (takes more time the larger the array)
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<ellisTAA>
apeiros: what is this topic called?
<apeiros_>
datastructures & algorithms? algorithmic complexity? depends what you're looking for specifically.
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<ellisTAA>
if i want to learn about this stuff do i just read about datastructures or do i search for ruby datastructures
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<apeiros_>
datastructures alone is sufficient. this is valid across programming languages.
<ellisTAA>
cool
<ellisTAA>
ty for that info
<ellisTAA>
do u know any must check out sources for datastructures / algorithms?
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<apeiros_>
c2 & wp are generally quite good sources
<apeiros_>
kl__: hm? I thought you had put me on ignore?
<kl__>
apeiros_: restarted client,
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<kl__>
ellisTAA: class A < B; end; A.method # method is defined in the superclass and does some metaprogramming that involves looking at the class name (i.e. A)
<kl__>
ellisTAA: I'm essentially looking to reduce that into one statement; Class.new on the other hand *might* be useful