<marwan_>
havenwood: but i don't want to query any user info, i just want to check if he registered before or not
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<shevy>
havenwood we are ALL SLAVES ANYWAY
<havenwood>
marwan_: A GET request should suffice. Right? You aren't changing anything, just checking if he registered.
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<havenwood>
s/changing anything/modifying a resource
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<marwan_>
and what the url should look like
<havenwood>
shevy: Yeah, I'd include the Fielding thesis as a chapter if there were going to be a Coder Bible. It is a nice meditation.
<marwan_>
and how the url should look like
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<chiel>
emocakes: haha :p
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<havenwood>
marwan_: Same URL as you'd use to PUT/POST/PATCH the registration check, but a GET request to that URL instead.
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<rismoney>
def my_map {:opt1=>0,:opt2=>1,opt3=>2} normally i call this with my_map[foo]. can i somehow use invert to call my_map? I want to pass something like my_map invert and get opt2
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<marwan_>
havenwood: ok, thanks. i got it
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<rismoney>
nevermind
<rismoney>
duh - .invert
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<davidokner>
bean: I got the same thing on windows even after instsalling the windows dev tools for ruby.
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<bean>
so that doesn't say anything about needing developer tools
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<end_guy>
Wheww... Just finished patching all of my 1.9.3 servers with the new update.
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<davidokner>
bean: Line 29
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<end_guy>
Thanks, dudes.
<bean>
gem install eventmachine --pre
<davidokner>
bean: I saw something about eventmachine when googling similar problem for another gem.
<davidokner>
bean: I don't know what it is though.
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<bean>
davidokner: just install the pre release version of eventmachine
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<davidokner>
bean: I just tried that command and got the same kind of error as for thin.
<bean>
thats because your error isn't for thin
<bean>
its for eventmachine
<davidokner>
Oh ok
<bean>
Sorry, i have to go, looks pretty googleable though
<bean>
try updating your developer tools
<davidokner>
bean: Ok thanks
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<davidokner>
How can I get an eventmachine error for installing eventmachine?
<davidokner>
Is there a problem with eventmachine 1.8.24?
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<bean>
just looked back in here for a sec, you're getting an installing eventmachine
<bean>
which thin needs
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<davidokner>
this is crazy, I can't install gem thin.
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<davidokner>
I got it to install on windows by doing precompiled binary version of thin "-v 1.2.11"
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<jrabbit>
are there alternatives to macruby?
<Eiam>
objc
<jrabbit>
Eiam: not the most appealing :P
<Eiam>
=)
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<jrabbit>
I'm running into some problems with stdlib with macruby and not much hope with it
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<havenwood>
jrabbit: Is your target OS X or iOS?
<jrabbit>
OS X.
<jrabbit>
are there otherways to interface with Appkit and such?
<havenwood>
jrabbit: Hrm, yeah I wonder how Apple is going to move forwards from Objective-C. The path really isn't clear to me. The language is so closely coupled with Cocoa.
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<jrabbit>
I mean it all ends up with objc
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<jrabbit>
but I don't need a ruby running on objc
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<jrabbit>
and the apple OSA bridges are equally dilapidated if not more so than macruby
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<jrabbit>
Like I'm only tryign to access system stuff mayeb I should look at QT or similar
<Spooner>
Yeah, but making pure Mac stuff is a dead end ;)
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<jrabbit>
Spooner: I'm not tryign to learn qt or anything I'd just like my damn app to work all I want to do is set some backgrounds atm
<jrabbit>
so it's not entirely for GUI but also for desktop integration mostly
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<jrabbit>
Spooner: I'll look at qt bindings
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<Ohga>
I'm learing ruby and I'm trying to implement a mixin that formalize monkey-patching, but some last step is missing. http://pastebin.com/wAhesn6C (Disclamer: I know monkey-patching is in general a bad move. I just want to learn from this excercise)
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<Harzilein>
Ohga: you are aware that there already are gems that provide apis/dsls facilitating monkey patching, right?
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<Ohga>
Harzilein: no, however, using those defeats the challenge in learning by implementing it myself.. so to my question.....
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<Harzilein>
Ohga: sorry, i'm about to go to bed. i assumed you'd find it interesting to implement it yourself, just mentioning that you should check out rubygems if there is a pressing need for such a thing :)
<Ohga>
Harzilein: well, I'm of course happy to know that. thank
<Ohga>
+you
<ehm_may>
Anyone know how to get a string with '\' in it that is not escaped? e.g.: 1.9.3-head :001 > "\copy foo"
<ehm_may>
=> "\u000Fpy foo"
<ehm_may>
=> "\\copy foo"
<ehm_may>
1.9.3-head :002 > '\copy foo'
<ehm_may>
1.9.3-head :003 > %{\copy foo}
<ehm_may>
=> "\u000Fpy foo"
* Ohga
points at topic
<ehm_may>
sry
<Harzilein>
ehm_may: those strings do not "contain escaped backslashes". they get _represented_ (String#inspect) with them
<Harzilein>
ehm_may: you can use puts if you want to see them "plainly" (which might still involve charset translations though)
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<davidokner>
Hi
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<Harzilein>
ehm_may: oh, you mean the fact that "a string literal Ã\abc" will get interpreted
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<ehm_may>
Harzilein: Yes!
<Harzilein>
ehm_may: use 'a string literal \abc'
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<davidokner>
Does anyone know how I can install the "thin" web server for Sinatra? The gem install command doesn't work and it is very complicated after I've looked into it.
<ehm_may>
Harzilein: I need to have nested '
<ehm_may>
Harzilein: Any thoughts on that?
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<ehm_may>
Harzilein: meh, guess I could concat
<Harzilein>
irb(main):006:0> 'a string literal \' with single quotes'
<Harzilein>
=> "a string literal ' with single quotes"
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<ehm_may>
Harzilein: thanks. I'm brain dead
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<jokke>
hi, what's the keysize for the bluefish crypto in rubys openssl module?
<jokke>
lol bluefish
<bigmac_>
is there any way to use cuda or gpu to process my ruby script
<jokke>
blowfish i mean
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<bigmac_>
i have 2 hundred gigs i need to process
<bigmac_>
File.read 200 gigs
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<bigmac_>
searching for duplicate files
<davidokner>
Anyone know how to install the slim webserver?
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<jokke>
bigmac_: i'd say ruby's the wrong language for that
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<davidokner>
Ruby would be too slow? Maybe C?
<jokke>
yes
<bigmac_>
maybe there is some kind of wrapper
<jokke>
C would be my choice too
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<jokke>
bigmac_: you could write one ;)
<bigmac_>
out of my pay grade
<bigmac_>
lol
<bigmac_>
beyond my skill level
<jokke>
bigmac_: first of all, what kind of duplicate check are you running?
<jokke>
do the files have to be exactly the same, as in checksum match?
<bigmac_>
i haev sever hard drives with duplicate movies that exist.. but checking names will fail... i need to see the contents of the file
<bigmac_>
i guess i could do checksum or something alike
<bigmac_>
i didnt think about that
<Kovensky>
hmm
<jokke>
okay, usually you would do this:
<Kovensky>
I'm doing a loop processing stdin data (long lived process); inside the loop (among other stuff) I assign an integer to a hash with integer keys
<jokke>
bigmac_: take the first byte, if it doesent match, move on.
<Kovensky>
should I bother with ||= or just use =
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<davidokner>
How long would it take with Ruby
<bigmac_>
ok, and if the first byte matches, then check the hole file
<jokke>
bigmac_: no
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<jokke>
bigmac_: then you take, say one K, as in 1024 Bytes, and run a checksum on it. If it doesn't match, move on.
<bigmac_>
are you talking about md5sum? or just all ruby?
<jokke>
i'd use some native code for that
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<jokke>
probably ruby has built in wrappers for checksums
<davidokner>
I wouldn't want to have to write an optimization algorithm, I would hope that would already be written.
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<jokke>
i'm no expert
<jokke>
bigmac_: and then if the partial checksum matches check the whole file.
<Ohga>
hm.. inside a method in a module, what is "self" refering to?
<bigmac_>
i think i can make it happen as you describe thanks for advice
<jokke>
bigmac_: you might want to adjust the size of the data for the first checksum
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<bigmac_>
ok
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<Kovensky>
hm, it seems that ||= is actually faster than =
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<jokke>
bigmac_: play around, make it small enough to be fast, but big enough to be relevant.
<davidokner>
What is ||= ?
<Kovensky>
"a ||= b" is equivalent to "a = a || b"
<Ohga>
Kovensky: no it isn't
<Kovensky>
given ruby's boolean semantics, it just means that 'a' is unchanged unless it's nil or false
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<jokke>
bigmac_: with movies, i'd even say that with 99.999999 likelihood the files match, if the partial checksum matches.
<Ohga>
"a = b if !a.nil?"
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<Kovensky>
oh?
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<jokke>
bigmac_: you might wan't to consider that
<bigmac_>
is there also a way i could throttle threads based on how much free resource are available
<Ohga>
Kovensky: nothing is actualy assigned if a is already set
<bigmac_>
i have created some wicked unstoppable over flows before lol
<jokke>
bigmac_: your operation system should do that for you..
<Kovensky>
Ohga: that sounds like a simple optimization though ("a = a" can and should be noop)
<Kovensky>
Ohga: but does ||= actually only not assign if not nil?
<Kovensky>
meh, /me tries in pry
<Ohga>
Kovensky: well, that's what PickAxe 1.9 say
<Kovensky>
[20] pry(main)> a = nil
<Kovensky>
=> nil
<Kovensky>
[21] pry(main)> a ||= false
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<Kovensky>
=> false
<Kovensky>
[22] pry(main)> a ||= true
<Kovensky>
=> true
<Kovensky>
[23] pry(main)> a ||= false
<Kovensky>
=> true
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<wallerdev>
wow
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<Kovensky>
anyway, I just was surprised that ||= was faster than = in a hash, even if you're reassigning a key that already existed in the hash
<Ohga>
trying again.. if I use "self" in a method that is in a module, what does "self" reference?
<Kovensky>
(assuming there are no secret optimizations, ||= would have to do two key lookups in worst case (and at least one lookup), while = only always does one lookup)
<wallerdev>
a ||= b is a || a = b
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<wallerdev>
i think self in a module references wherever it was included
<rickwinfrey>
Ohga: self in a method in a module is just the same as self in a method in a class. self refers to the object invoking the method.
<Kovensky>
wallerdev: that's just an optimization of the `a = a || b` case
<Kovensky>
it still doesn't explain why ||= is faster than = for hash assignment
<Kovensky>
(unless I'm doing my benchmark wrong)
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<wallerdev>
well = has to assign no matter what
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<wallerdev>
so one does assigning, the other just does lookup
<wallerdev>
unless it has to assign it
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<rickwinfrey>
Ohga: for an example, here's a gist showing self in a module is the object invoking the method of that module: https://gist.github.com/rewinfrey/4728295
<Myconix>
Anyone here know how to mirror radians across x and y axes?
<Kovensky>
wallerdev: yeah, but both have to do the same expensive operation (key lookup) and a cheap operation (either read or write) in the best case
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<wallerdev>
in the best case a ||= b doesnt have to do any writing
<Ohga>
rickwinfrey: we could cut right to the case, trying to get assistance with this: http://pastebin.com/TZe8qDGi
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<Ohga>
rickwinfrey: a learning excercise of writing a monkey-patch helper
<wallerdev>
oh nice stabby block
<wallerdev>
are those popular these days
<Ohga>
it is however not working
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<Ohga>
rickwinfrey: I get "undefined method `__nonmodified_run' for Nanoc::Filters::ERB:Class"
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<rickwinfrey>
ohga: hm, i'm looking at it now
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<rickwinfrey>
ohga: is there any reason why you're extending the Modifying module rather than including it?
<Ohga>
rickwinfrey: because I'm a ruby beginner, most probably..
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<Ohga>
rickwinfrey: are you able to replicate the error?
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<rickwinfrey>
ohga: clarifying question - are you calling modify_method on an instance of Nanoc::Filters::ERB?
<rickwinfrey>
or calling it directly from the class?
<sailias>
Ohga: I am looking at your paste and don't see your call to instanciate the class and call that method
<sailias>
exactly what he's saying above
<Ohga>
ooooohhh.. that might be it..
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<rickwinfrey>
ohga: that's why i asked if you were using extend for a particular reason
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<ml`>
How to keep irb from saving command history to ~/.irb-history file?
<rickwinfrey>
modify_method is expecting to be called from an instance - not a class
<rickwinfrey>
you'll need to `include Modifying` and then instantiate Nanoc::Filters::ERB
<Ohga>
well.. it is being instantiated.. however, that is done by framework (nanoc to be precise) not by me..
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<rickwinfrey>
so you have a Nanoc object?
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<Ohga>
rickwinfrey: looking through the nanoc source.. it's a bit non-trivial :-O
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<rickwinfrey>
ohga: i think i was barking up the wrong tree. the error you get says "undefined method `__nonmodified_run' for Nanoc::Filters::ERB:Class"
<Ohga>
rickwinfrey: yeah..
<rickwinfrey>
which seems related to the alias_method
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<Ohga>
as far as I can tell, in a class named ItemRep the Class "klass" is found that represent the so called filter (Nanoc::Filters::ERB which inherits Nanoc::Filter). An instance is created "filter = klass.new([unrelated])", and then run is reached through a chain of method invocations on "filter".
<Ohga>
so in short, yes.. an instance is involved
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<rickwinfrey>
ohga: i'd try wrapping the alias_method in your Modifying module in a class_eval like this: Nanoc::Filters::ERB.class_eval { alias_method nonmodified.to_sym, method_name }
<Ohga>
rickwinfrey: would you be kind to provide a paste?
<RubyPanther>
presumably nobody fixes it because when that hits rb_f_notimplement you actually have to fix your build and then it goes away. But failing to compile is not exactly what rb_f_notimplement is supposed to cause.
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<Ohga>
rickwinfrey: no, same error
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<rickwinfrey>
ohga: when you get the stack trace - is the line number causing the error the alias_method line?
<bigmac_>
jokke: i am done, i just used File.size... quickly trimmed out duplicates... thanks for your help
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<Ohga>
rickwinfrey: well, maybe I should have delegate the point that the innermost traceback points to line 7..
<Ohga>
that is, the "original = -> *args { send(nonmodified, *args) }" line
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<rickwinfrey>
ohga: i'm a little confused why alias_method isn't generating the error - because you're trying to assign a method to something that hasn't been defined as a method yet
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<Ohga>
hm.. is "self" changed from the instance to the class when the Proc original from line 7 is invoked in line 16?
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<rickwinfrey>
ohga: when lines 14 through 16 are evaluated - self is Nanoc::Filters::ERB
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<Ohga>
rickwinfrey: yeah.. well that sounds good..
<rickwinfrey>
that's why the error says "undefined method `__nonmodified_run' for Nanoc::Filters::ERB:Class"
<rickwinfrey>
class - being the keyword there
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<rickwinfrey>
this is a strange bit of code :)
<Ohga>
rickwinfrey: it is :-P
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<Ohga>
rickwinfrey: however, with the memoization there is no block added to the actual invocation of the method
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<Ohga>
I think that's what's increasing the complexitivity
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<davidcelis>
if i have an object with a lot of (or several very large) instance variables, how do i get it to not take up a big amount of space when it's the return value of a method?
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<davidcelis>
like i've got an object taking up most of my terminal screen when returned
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<Ohga>
rickwinfrey: I got the bare example to work!! http://pastebin.com/19GY71MY With this the lambda is in the context where "self" refer to the instance
<Ohga>
so there must be an additional reason that didn't work in the context of the nanoc framework...
<Ohga>
rickwinfrey: ah, there we have it... caching issues with nanoc autocompile feature
<rickwinfrey>
ohga: hehe that's a good problem, nice work!
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<Ohga>
rickwinfrey: learned quite a bit about how "self" changes meaning in different contexts
<rickwinfrey>
ohga: yes :) sometimes it can be tricky - like this case
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<rickwinfrey>
ohga: and with that i'm going to turn in. glad you got it working!
<Ohga>
rickwinfrey: good night
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<cjs>
I've got a function "def f(x) ... end" that I'd like to pass to another function g, that may call f with some argument if it wants to. What's the Ruby syntax that gets me closest to to "g(f)"? Is there anything better than having g take a block, and calling it as "g() { |x| f(x) }"?
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<Ohga>
cjs: you can have "def g(f, x)\n [something..] f.call x\n end" which is invoked with "g(-> x { f(x) }, 1)" (the -> syntax being a lambda expression)
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<cjs>
That's only Ruby 1.9, right?
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<cjs>
(Ogha)
<ml`>
Does anybody know how to disable the ~/.irb-history file?
<ml`>
I checked IRB::conf[:SAVE_HISTORY] and it is nil, but it still writes the history file on exit.
<cjs>
I need something that works in 1.8 as well, and anyway, "g(lambda { |x| f(x) })" is even more verbose than "g() { |x| f(x) }".
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<Hanmac_>
cjs g() {} uses proc not lambda there might be a difference ... some keywords like return react different
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<ml`>
\leave
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<cjs>
Hanmac_: Yeah, I understand the difference between proc and lambda (now :-)). Basically, what I'm really asking is, can I do this without all that annoying lamba syntax, the way I'd do it in a functional programming language. I'm thinking not.
<cjs>
I think that the problem is, while functions can be first-class objects in Ruby, you have to do special work to store them in variables, and special work to call them once stored in a variable.
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<Hanmac_>
something like that? :P foo &method(:bar)
<cjs>
Oh, hm, I'm also confused by block syntax. It's ok to have "def f(x, y = nil, &block)" and not supply it a block?
<cjs>
Ah, &method(:bar) is not bad at all!
<cjs>
Only triples the number of characters I have to type, or even less if I use long function names. :-)
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<wf2f>
anyone able to give a brief explanation as to what an array of audio samples (e.g. in a .WAV or .PCM file) after having FFT applied, represents?
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<cjs>
The average amplitude of each frequency band in the FFT.
<cjs>
(Over the time the FFT was run.)
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<wf2f>
oic
<wf2f>
so
<wf2f>
the length of the array stays the same
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<cjs>
Right, though that's an artifact of the FFT process, I believe.
<wf2f>
because I took N samples and it outputs N frequencies
<wf2f>
interesting
<wf2f>
isnt that a lossy representation? ><
<wf2f>
how can you go back from that to the samples again
<cjs>
Well, if you think about it, and the relation to the Nyquist limit, it makes sense: you can only represent a certain number of frequencies in a sample of given length.
<cjs>
The samples are also a lossy representation, in a sense; every sampled signal effectively has a low pass filter on it of the Nyquist limit.
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<wf2f>
so how do i know what the frequencies in the array are
<wf2f>
corresponding to entries in the array are*
<cjs>
We filter the ouput to make it stop doing (at a frequency 4x the sampling frequency) [1,1,1,1,2,2,2,2,1,1,1,1], which is a square wave, and turn it into [1,1.25,1.5,1.75,2,....]
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<wf2f>
eh?
<wf2f>
i couldnt understand that
<cjs>
The frequences are spaced from 0 to the Nyquist limit.
<cjs>
Ok, we'd better move to another room or PM for this, since it's a bit of explanation....
<cjs>
(We'll do it via PM unless anybody else wants to join in. :-))
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<Hanmac_>
cjs like that?
<Hanmac_>
>> p [1,1,1,1,2,2,2,2,1,1,1,1].chunk(&:to_i).each_cons(2).flat_map{|(x,n),(y,*)| x.step(y,(y-x)/n.size.to_f).to_a}
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<Hanmac_>
cjs is this what you want?
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<cyro>
is there a difference between a method(:foo) and a lambda that's assigned to a variable named foo?
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<Hanmac_>
cyro yeah, method(:foo) calls the defined method named foo
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<cyro>
Hanmac_: when I did it in irb i got a Method object
<cyro>
so method(:foo).call was the same as foo()
<Hanmac_>
cyro yeah
<Hanmac_>
it can be used for callback stuff
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<cyro>
Hanmac_: so the Method object basically behaves like a lambda? Or is there something like the difference between a proc and lambda?
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<cjs>
cyro: You just made my brain explode. :-)
<cyro>
cjs: sorry
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<cyro>
cjs: I saw your earlier conversation and then started experimenting
<Hanmac_>
cyro there is a difference in the reacton with key words like return ... return in a lambda only closes it, return in a proc closes the method where it was called
<cjs>
Ruby's a pretty good language, but it's got some pretty hairy corners in it.
<cyro>
cjs: for sure
<cyro>
Hanmac_: cool
<cjs>
Hanmac_: I bet there are also going to be issues regarding closures.
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<Hanmac_>
cjs you want hairy? in ruby i can define classes inside objects ... beat that python :P
<cjs>
:-)
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<shevy>
* Cannot join #php (Channel is invite only).
<shevy>
ah
<shevy>
##php
<shevy>
I hate freenode's policy here... galaxynet was so much easier
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<shevy>
so... finally setup php
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<shevy>
did you guys know that php has a function called str_repeat() ?
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<Hanmac>
hm yeah ... ruby has * for that
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<shevy>
yup, much much much shorter in ruby
<shevy>
but there is another fun way to join a string in php
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<shevy>
implode(array_fill(0, 80, "repeat this string here"));
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<shevy>
that boggles the mind, doesn't it Hanmac? :-)
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<shevy>
though I have to say...
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<shevy>
this is actually more fun than plain ruby .cgi
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<Hanmac>
(["repeat this string here"] * 80).join ?
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<shevy>
dunno really
<shevy>
I suppose php also follows a "there is more than one way to do it"
<shevy>
it sends shivers down my spine
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<Hanmac>
do you know what i hate? when you must fill an register formular to look at the PRODUCTINFORMATION !!! ...
<cjs>
Hanmac: Yeah, I often avoid companies like that. I usually drop them a note to tell them why I'm not even considering them, if it's not too tough. But if you really need to get past a registeration wall, you can use a mailinator.com address.
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<shevy>
damn
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<shevy>
how do I get the ascii value of "\n" again?
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<shevy>
writing in php confuses me...
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<ddd>
Huffington Post used to have this 'first visit' popup that screamed "SUBSCRIBE NOW!" I bitched about it on twitter to/about them and amazingly its since been removed.
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<ddd>
while it might not have been because of my bitch that it was removed, in my world, I choose to believe thats why :)
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<shevy>
ah yes... .chr and .ord
<shevy>
ddd cool
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<shevy>
the other frameworks really need to compete with rails nowadays
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<maasha>
I thought I was pretty good with regex, but I cant find the reason why this fails (it should match IMHO): "_b_eeeee^ggggdeghhffhhiic^eghifgihfffghfheggg^aceecR`daaccccaacabbcbbbbccccbccbbcccccccbbW".match(/^[!-J]*$/)
<maasha>
If I remove the line end anchor then it matches.
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* maasha
plays in rubular
<Hanmac>
the page is interesting but you need to register to look what it does :/
<benjamin__>
i'm trying to write a script that will process my shopping cart and enroll me in classes when my appointment comes due at 6am tomorrow morning
<benjamin__>
i'm having trouble entering the username and password
<maasha>
I can also use the $ instead of ^ to make it match, but not both - which I want.
<benjamin__>
how do i label the username field and password field?
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<benjamin__>
after that it's all clicks
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<Hanmac>
shevy what i make me angy about tzhat page is that it need to say "Ruby ""Without"" Rails" ...
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<shevy>
hehe
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<shevy>
hmm about class methods
<shevy>
how would you capture and store state with them?
<cjs>
I don't think you really can compete with Rails, because Rails isn't the most popular because it's technically better. It's the most popular in spite of that, actually.
<shevy>
it does not work because the @ivar there, @mode, is nil
<tobiasvl>
you rarely want to use @@ ;)
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<tobiasvl>
shevy: `puts 'THE MODE IS: '+@mode.to_s` ? @mode is already a string, isn't it
<cjs>
shevy: Ah, the initialize is a method in the objects created by Form, not in the Form (class) object.
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<tobiasvl>
puts 'THE MODE IS: #{@mode}'
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<shevy>
tobiasvl it would be nil in this case, but this is just debugging anyway, I wonder if it is possible to use @ivars like that at all
<cjs>
Instead of MODE = 'post' you want @mode = 'post'
<tobiasvl>
shevy: yeah the constructor is never called, because you never create a From object
<shevy>
cjs but then I would require an instance ...
<shevy>
tobiasvl hmm
<orospakr>
Hey, is there an equivalent to Data_Wrap_Struct() that will return an existing ruby object wrapping that same struct pointer location if one already exists?
<cjs>
You have an instance already: an instance of Class bound to the name "Form".
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<cjs>
And your @mode is an instance variable in that object.
<orospakr>
or do I have to just do my own instance tracking?
<tobiasvl>
shevy: initialize is the Form object constructor
<orospakr>
(which would actually be a bit difficult from a reentrancy perspective)
<tobiasvl>
invoked when you call Form.new
<cjs>
(You do not have any instances of Form objects, though, nor can I see what they would be used for.)
<shevy>
cjs I can tell you what I plan to do
<cjs>
shevy: Sure, that could be a good start. :-)
<shevy>
I want to use this in a method, and Form.mode would become the default argument for one parameter
<shevy>
so Form.mode would either return 'post' or 'get' (two states are possible), for this argument
<cjs>
So you want to create Form objects at some point?
<tobiasvl>
why is toggle and mode class methods anyway?
<shevy>
yeah tobiasvl exactly
<shevy>
because it is nicer to do Form.mode
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<shevy>
example
<shevy>
def foo(i, a = Form.mode)
<cjs>
Is Form.mode supposed to change the default mode of new Form objects constructed by Form?
<shevy>
cjs, no, Form.mode should only give out one of those two strings
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<shevy>
I plan to use another method to toggle this behaviour, outside of that method
<shevy>
here is how I can abuse constants to do what I want:
<cjs>
Ok, so why would you store that value in an object of class Class? Maybe you want something like, 'Form = Object.new; def Form.mode; ... ; end; ...; end;'
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<shevy>
hmm
<shevy>
cjs and how could I toggle it?
<cjs>
Put the toggle method on it. Let me cons up an example here.
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<shevy>
cool
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<cjs>
What's the trick for executing a code block in a context where self is a given object?
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<shevy>
hehe
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<cjs>
Oh, I can just use instance_variable_set. Much nicer.
<cjs>
So that's kind of constructing a custom class without a Class object that can construct more of them.
<shevy>
wow
<shevy>
that works
<shevy>
now let me try to understand what it does...
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<cjs>
There's probably even more clever ways to do that that are not as clear. :-)
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<shevy>
aha ok so we set a default @ivar after it is created, via .instance_variable_set
<cjs>
Anyway, yes, I'm happy to walk you through that. (And accept corrections and hints from anybody else here.)
<shevy>
then we add two class methods to it
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<shevy>
with the .mode one returning the content of @mode ivar, and the .toggle one changing that data
<shevy>
so far ok?
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<cjs>
I'm not sure I'd use the term "class methods." We add two methods to that object that exist only in that object.
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<cjs>
But otherwise, yeah.
<shevy>
(I also ask my brain at the same time, in case you are wondering why I am so verbose cjs ;-) )
<gestahlt>
Hiho
<shevy>
ok
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<shevy>
I don't think I have ever used code like this before myself
<cjs>
shevy: No worries, this is the correct way to work though things, IMHO.
<Hanmac>
cjs they are more singleton methods ...
<atmosx>
shevy: Can I bother again with a biology question? :-P
<cjs>
Right, that's the term! "Singleton methods."
<shevy>
atmosx yeah can you give me ONE minute? I am learning something new right now hahaha
<atmosx>
sure :-0
<shevy>
it only happens once a day for me, so I have to be attentive ;)
<atmosx>
msg me when you're ready
<shevy>
k
<atmosx>
sure :-)
<shevy>
ohhh
<shevy>
I think I am finished
<shevy>
the rest is just giving us the result
<shevy>
whoa :)
<atmosx>
Starting with 15N15N (heavy) DNA and after THREE generations in the 14N medium, E.coli cells will produce WHAT bands in density-gradient centrifugation?
<shevy>
that seems damn simple ...
<cjs>
shevy: The key to wrapping your brain around stuff like this is to remember that everything's an object. So when you say, "class Foo; ...; end" you are actually also instantiating a new object, of class Class, that will in turn construct more objects for you when you call its new method.
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<shevy>
cjs cooool
<shevy>
I don't know why, but in my head I thought I must use a "class Form" setup
<shevy>
this code here is not only 50% shorter but also works elegantly
<shevy>
ok so with this you avoid .instance_variable_set ?
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<cjs>
Right. Store whether or not it's a put form as a boolean. And @put is initialized to nil when the object is created, which is interpreted as false in a boolean context.
<shevy>
awesome
<cjs>
Grovelling in the object from the outside using instance_variable_set was quite ugly. :-)
<shevy>
yeah
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<Hanmac>
atmosx th funny thing is that bacteria can STEAL genes from totally different species :P
<shevy>
Hanmac we need a new programming language doing that!
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<Xeago>
oh god, we are on this topic again xD
<shevy>
Xeago no, we had ruby before... Form = Object.new see! almost totally anonymous objects :D
<shevy>
wonder if you can subclass via Object.new too hmmmm
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<Hanmac>
atmosx: its like riding in a tram, and when you go outside, you have the muscels from guy1, the blond hair from women1 and the teeth from Dog1 :P
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<shevy>
what the ...
<Hanmac>
shevy thats how backteria can work :P
<atmosx>
Hanmac: how do you know? :-P
<shevy>
can someone explain to me why this works:
<Hanmac>
i readed it in a book
<shevy>
puts String.new('hi') {wejklgwe}
<shevy>
I dont get how you can put anything inside a block???
<shevy>
can you even put binary data into a block?
<shevy>
like embed an image or something?
<Hanmac>
shevy because both String.new and puts does igonre the block
<shevy>
ohhhhhh
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<Hanmac>
so it thinks that this is a method name
<shevy>
it does not seem to evaluate it at all
<shevy>
oh
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<shevy>
I see
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<shevy>
seems via .new things are different
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<shevy>
in a normal method, like foo(), the {} suddenly gets checked
<tobiasvl>
Hanmac: anyway, cjs's point was that "validity" can mean syntactical, semantical or philosophical validity ;)
<shevy>
in theory, I could embed the binary data of a .png file in a block, and then later run yield + eval() on it, passing it to some method that may cteate that image file?
<shevy>
I learned two things today, my brain needs beer :(
<shevy>
hey Slydder
<Slydder>
I am currently working on building a debian package for a ruby on rails application and am getting gem errors regarding missing specification files after installing the package. if I build from source these errors do not come up. any ideas?
<cjs>
Hanmac: where did I miss a semicolon? You don't need one after the parens when declaring a function's arguments.
<Hanmac>
shevy you dont need eval for the binary data of the png ...
<cjs>
Oh, it could be you do in 1.9.
<Hanmac>
cjs yeah i see, as you see my code 10:25 you dont need one before the end eigher
<Hanmac>
but i not would write that in real code
<cjs>
Hanmac: I need one before the end in Ruby 1.8.
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<Hanmac>
1.8 is allready dead for me
<cjs>
Oh, I don't! Cool!
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<cjs>
So many years of long and faithful service, and you dump it like that! :-)
<shevy>
hehe
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<shevy>
ok perhaps someone can explain this to me
<shevy>
I adapted your code a bit cjs
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<shevy>
I wanted to try and find out if I can use Object.new with a superclass too
<shevy>
now, with Object.new it does not seem to work
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<shevy>
but with Class.new(NameOfSuperClassHere) it seems to work
<shevy>
which confuses me a bit...
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<Xeago>
does that return a subclass isntance or the subclass?
<shevy>
well I suppose my question is basically ... what is the functional difference between Object.new and Class.new here? to me it seems as if they are the same, save that Class.new accepts an argument and Object.new does not
<shevy>
Xeago hmm lemme check
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<Xeago>
I think Class.new is used to dynamically create new classes
<shevy>
ok but Object.new can be used to dynamically create new objects
<Xeago>
and just as classes are objects, those can be instantiated aswell
<shevy>
and Class.new is an object too, or?
<Xeago>
uhu
<Hanmac>
shevy:
<Hanmac>
>> p Class.new(TrueClass)
<Xeago>
just a more specific kind of object than object.new creates
<shevy>
there are times when I hate you Hanmac :-)
<shevy>
how is Class related to Object ?
<shevy>
the upcased variants
<shevy>
ohhh
<shevy>
Class has Object as ancestor
<Hanmac>
shevy dont worry, the new class is crippeld and you cant use it :P
<shevy>
so unless I am mistaken, it seems that Class is just a very specialized instance of Object
<cjs>
shevy: Part of the point is we aren't using classes here, at least not in the sense of "making an object to make other objects."
<shevy>
allowing more options than Object alone would
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<shevy>
cjs ok but... it seems as if I can replace all "Object." of your code with "Class." and everything works exactly the same way
<cjs>
Class.new creates a new factory for creating more objects. Object.new just creates an object (using the factory object that "Object" refers to).
<shevy>
hmm
<cjs>
Sure, you can use any class at all.
<shevy>
(need more beer to digest that...)
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<cjs>
You could do it on FixNum if you liked. :-)
<shevy>
let me test that...
<shevy>
hmmmmmmmmmmm
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<cjs>
Basically, an object is a collection of data and methods, right? So we take the "minimal" collection of methods, an instance of Object, and add our methods of interest to that instance we created.
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<shevy>
now this is confusing me even more
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<shevy>
x = 5; def x.test; puts 'test'; end # TypeError: can't define singleton method "test" for Fixnum
<shevy>
but!
<shevy>
oh right
<cjs>
Ok, try this: o = Object.new; c = Class.new; p(c.methods - o.methods)
<shevy>
x = Class.new(Fixnum) ... it does not seem as if I can create a real fixnum that way?
<cjs>
Oh, right, Fixnum's a bit special. Try BigNum. :-)
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<shevy>
NoMethodError: undefined method `new' for Fixnum:Class hehe
<shevy>
ok
<cjs>
IIRC, Fixnums in the Ruby interpreter are actually stored directly as C ints or something like that.
<Xeago>
cjs: the lower 2 bits are 0 tho
<Xeago>
iirc, or are some other value
<hoelzro>
I thought it was the lower 1?
<alexander-chr>
Hey, sorry for basic question but can't google it: .sort_by(&:version). What does the &: sign do?
<hoelzro>
alexander-chr: it calls to_proc on the recipient
<Xeago>
alexander-chr: google for Symbol#to_proc
<shevy>
what was the name of this "tabula rasa" object... blank object.. CoreObject? hmm
<Xeago>
it turns the symbol in to a proc object
<hoelzro>
and associates that proc with the method call as the block
<Xeago>
(by calling #to_proc on it)
<alexander-chr>
hoelzro, xeago: thanks a lot
<cjs>
I would have used the lower two bits 0 to indicate an object pointer myself, since it's aligned and you wouldn't need masking to deference it, but yeah, it's all just implementation details.
<hoelzro>
cjs: it might be that way
<Xeago>
cjs: it has to do with aligning yes, there is some talk about it on how to debug ruby
<hoelzro>
I know that at least one bit is used to indicate object vs integer
<hoelzro>
whether it's set or not for which I don't know
<hoelzro>
but it's a neat trick
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<cjs>
hoelzro: It's quite a common trick, actually; interpreters have been using it for years.
<hoelzro>
cjs: it doesn't make it any less neat
<cjs>
There's a reason the Haskell standard says that the minimum size of Int is 2^29. :-)
<cjs>
(+/- 2^29).
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<asfdafasdfasf>
im using require to load a library in my seeds.rb and then rake db:seed but it keeps saying that it cant find the library
<asfdafasdfasf>
does anyone know what im doing wrong?
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<Hanmac>
you use rake? :P
<asfdafasdfasf>
yea
<asfdafasdfasf>
not good?
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<ninegrid>
speaking of haskell, i came across these great screen casts on youtube http://www.youtube.com/watch?v=045422s6xik and I want to know if anyone knows of something similar for ruby, some screen casts where the author divulges his train of thought and writes idiomatic ruby (not something like codeschool or railscasts)
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<Slydder>
hey all. I have a line " r = version_requirements" which throws an error saying it should be changed to requirement which i did an now get the following: ./../config/../vendor/rails/railties/lib/rails/gem_dependency.rb:120:in `requirement': stack level too deep (SystemStackError)
<Slydder>
any idea?
<Hanmac>
shevy: look at this goup :
<Hanmac>
>> p ObjectSpace.each_object(Class).select {|c| !c.respond_to?(:new)}
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<Hanmac>
hoelzro did you looked?
<hoelzro>
Hanmac: I did, but I didn't really understand it, tbh
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<Hanmac>
h=HiddenDelegator.new(2);p h#=> "2";h.class #=> Fixnum;h.to_f!; p h #=> "2.0"; h.class #=> Float; h.to_s!; p h #=>"2.0"; p h.class #=> String
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<Hanmac>
hoelzro: see how h.class changes :P
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<hoelzro>
wow.
<hoelzro>
that's freaking evil
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<Hanmac>
rubys typing may be strong, but i am stronger :P
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<banisterplssleep>
hoelzro: not really he just override the 'class' method, *actually* changing the class is way more evil :)
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<hoelzro>
I still find it evil =P
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<Hanmac>
yeah c-functions cant be fooled with that :P
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<shevy>
hoelzro hmm
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<shevy>
"def help" .... hmm
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<shevy>
how does python solve this with their docstrings? how do they tap into that information of an object at runtime?
<Hanmac>
with uglyness? :P
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<spider-mario>
shevy: values have a .__doc__ attribute
<shevy>
ah
<shevy>
so basically that would be equivalent to ruby objects having a .__doc__ method, calling an @ivar or?
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<shevy>
I guess I can understand the __ finally... but it sure is ugly
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<Harzilein>
ninegrid: hmm
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<Harzilein>
ninegrid: i liked the "making siren song" "asciicast" by zenspider :)
<Harzilein>
ninegrid: can't really say if it's exemplary though
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<shevy>
asciicast?
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<Harzilein>
shevy: he asked for "ruby screencasts", but unlike railscasts, so i assumed he knows about the "asciicasts" eifion bedford makes from ryan bates' railscasts, i.e. turn those into texts.
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<VolodymyrB>
Hi, what expression "x y do z end" name?
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<Slydder>
I have already set the stack size to 64MB just to see if that was the problem and I am still getting this error.
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<apeiros_>
Slydder: stack level too deep usually indicates an infinite recursion
<Slydder>
yeah. that's what I thought. but how do I find where?
<apeiros_>
though, your backtrace looks suspiciosly short for that
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<clocKwize>
looks like a gem is requiring itself or something?
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<shevy>
hehe
<shevy>
security through obscurity
<shevy>
VolodymyrB this should be x(y) { z }
<shevy>
so what are the big new things in 2.0
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<trj>
Hi, I'm completely new to Ruby. I'm using Ubuntu 12.04, I'm trying to "gem install bundler" and getting HTTP 302 from gems.rubyforge.org. Is this due to the recent hack, what can I do to workaround it?
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<Nom->
That's comforting... a spec that does nothing is segfaulting... any ideas how i can track it down?
<KevinSjoberg>
Hi, folks. I really need some help with an issue of mine. It seems I have a problem with unicode normalization in Ruby 1.8.7 (not my choice). See https://gist.github.com/KevinSjoberg/4709596. Any idea how I can see what normalization a string uses or convert a string into a preferred normalization such as KC or KD?
<Nom->
oh, i'm a moron... commented out tests in wrong file
<apeiros_>
KevinSjoberg: you can see the normalization by inspecting the bytes. in 1.8, you can e.g. use str.unpack("U*")
<apeiros_>
and to convert the normalization, I think I already recommended e.g. the unicode gem
<Slydder>
was just trying something. didn't work anyway
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<KevinSjoberg>
apeiros_: Oh, I totally forgot about that. Had to run the other time. I'll look into the unicode gem. I would have to include the whole source though, because my library run without Bundler or equivalent. Is it hard to convert normalization by hand?
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<apeiros_>
KevinSjoberg: it's probably prohibitively difficult unless you can live with a very very partial solution
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<apeiros_>
KevinSjoberg: you have rubygems, though, I assume?
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<apeiros_>
if so, then it's a simple `gem install unicode` + `require 'unicode'` away
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<KevinSjoberg>
Well, the problem is that I'm not sure if everyone has Rubygems available. I know for a fact that all my users are Mac users (the application that installs my extension, Alfred, is only available for Mac), and all Mac users have Ruby 1.8.7 available on their system.
<KevinSjoberg>
But I don't think they have Rubygems available per default.
<apeiros_>
they do
<KevinSjoberg>
apeiros_: How positive are you? :)
<ddd>
very
<apeiros_>
100%. I'm a macuser since birth.
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<apeiros_>
but manipulating the system ruby… that part is not nice :-/
<KevinSjoberg>
apeiros_: Alright, then I believe you. Thanks for the help.
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<ddd>
thus the joy of Homebrew, MacPorts, and Ruby Version Managers :)
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<ddd>
just so we don't have to mess with the system ruby :)
<KevinSjoberg>
apeiros_: No, I just assume that Ruby is installed, and make use of the version available.
<apeiros_>
KevinSjoberg: if you can, use a self-contained ruby
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<ddd>
KevinSjoberg: then make sure you use syntax 1.8.7 compatable and not do anything like trying to use the new hash syntax etc
<KevinSjoberg>
apeiros_: That's my main problem. I would love to use Ruby 1.9+, preferably through RVM or rbenv, but I have no control over the shell, and it's load path, so I can't execute the ruby version I want.
<ddd>
s/atable/atible/
<KevinSjoberg>
ddd: Done already, all my tests run against Ruby 1.8.7 for this library.
<apeiros_>
KevinSjoberg: people use alfred through the shell?
<apeiros_>
or alfred uses the shell?
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<ddd>
not that I've seen but he might have access to something neither of us know about
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<KevinSjoberg>
apeiros_: Alfred launch my shell script through a shell, which Alfred invokes.
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<matti>
apeiros_: You mean, you were born a fanboy? ;]
<shevy>
alfred must die
<apeiros_>
but if you launch the shell, you have full control over its env
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<apeiros_>
matti: since fanboys of cult X always see people using Y as fanboys of Y, that discussion is pretty much pointless.
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<KevinSjoberg>
apeiros_: Sorry, I explained that poorly. Alfred invokes a shell, which in turn run my shell script. I can decide the contents of the shell script but can't manipulate or change anything about the shell invoked.
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<ddd>
you can use the shell script to set the environment
<apeiros_>
KevinSjoberg: um, yes. if you launch a shell, you can.
<shevy>
alfred must be beheaded
<apeiros_>
shevy: is that necessary?
* apeiros_
afk
<shevy>
if it would be fred rather than alfred no
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<matti>
apeiros_: I am a Mac user myself; it has more to do with my sarcastic sense of humour than caring about X and Y ;p
<ddd>
shevy should be beheaded
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<shevy>
but I only invoke ruby scripts :(
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<matti>
ddd: LOL
<matti>
ddd: Why?
<ddd>
because he wants to behead alfred! Who is gonna take care of Batman *then*?
<shevy>
all I know is that there is some kind of alfred running shell scripts
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<Zelest>
I'm trying to match two strings where I want to be able to match asterix chars (*) .. e.g, /foo/bar/* would match /foo/bar/blah.txt .. what is the best appraoch to do this?
<ddd>
ok fine. Behead Alfred, burn Fred, and run straight AppleScript :)
<shevy>
well, I take it that alfred runs on mac
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<shevy>
so he is stuck with 1.8.x
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<ddd>
no he isnt
<KevinSjoberg>
apeiros_: I don't, or I do, but isn't aware of it due to my incompetence in the area of unix systems. Alfred invokes the shell (not me), I decide it's contents though. I guess I could change "#!/usr/bin/env ruby -Ku" to "#!/usr/local/bin/ruby", but then there is a small chance that the binary does not exist.
<Hanmac>
Zelest: look at File.fnmatch
<matti>
ddd: He also wanted to become US President at some point.
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<shevy>
lol matti
<matti>
ddd: Work for British Secret Service, etc.
<matti>
ddd: Its just ... shevy ;d
<shevy>
nah, there is no US president, it's all a show
<matti>
ddd: Ah, right.
<matti>
ddd: And he has a thing for conspiracy theories.
<matti>
;p
<Zelest>
Hanmac, awesome, that's just what I wanted, thanks! :-)
* matti
hugs shevy
<ddd>
if he can run a shell script, he can easily grab any ruby he wants, and it will be available for any future execution of that script (all he has to do is check for the existance of say $HOME/.rvm and if it exists, check the rvm list output and check for the version he wants, then use that. Initial warning to the user from within the script is trivial
<shevy>
as long as you have miniature flags, everything will be alright
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<shevy>
ddd remember a mac user might be a very dumb person
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<matti>
;p
<ddd>
just like everything from microsoft, apple, and a slew of application vendors do. they download on the first invocation, then check for waht they grabbed the first invocation on subsequent
<ddd>
sheerun: hardly
<ddd>
shevy: no more so than any other computer OS
<Hanmac>
shevy: "i see dumb persons ... they dont know that they are are dumb ... and they posting there" : P
<matti>
ddd: You'd be surprised, actually.
<matti>
;p
<shevy>
I feel we linux users here are the minority :(
<ddd>
matti: no more stupid than linux users
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<matti>
ddd: I beg on the contrary ;]
<shevy>
hey, I have several rubies here!
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<ddd>
shevy: any thing you can do on Linux we can do on OSX except compile/recompile the core OS
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<matti>
ddd: That is also not true ;p
<shevy>
you can but KevinSjoberg's users can not :-)
<ddd>
and thats by virtue of it being closed source. its hardly an indication of the intelligence of the user
<ddd>
matti: uhh no, its not
<shevy>
they are literally the most helpless mac users ever
<shevy>
graphics designers
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<matti>
ddd: I use both.
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<ddd>
so do i
<matti>
ddd: And for some reason I need to run Linux VMs.
<matti>
ddd: I do wonder why.
<matti>
;D
<ddd>
I'm on a mac right now, and I've been using linux since 1.0.8 kernel
<Hanmac>
shevy maybe at weekend i try to crosscompile ruby :P
<shevy>
Hanmac lies!
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<matti>
ddd: I contributed code to Linux Kernel ;p
<matti>
ddd: I WON ;p
<shevy>
I gave up on cross compiling
<shevy>
matti did you report a typo?
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<matti>
shevy: Ssshhy.
<matti>
;p
<shevy>
:)
<ddd>
i've yet to find anything where I need to use a linux VM for anything other than me WANTING to use one, usually because I'm trying to run a *linux* specific peiece of software such as a linux only game, or something that ties directly into the unix kernel
<matti>
shevy: On which side you are, traitor.
<shevy>
the kernel is too huge for me
<shevy>
matti on ruby's side!
<Hanmac>
shevy i thought that it may be more easy when using with multiach
<matti>
shevy: :<
<shevy>
I think all the operating systems suck, linux just sucks less than the others
<matti>
ddd: Relax doode ;p
<KevinSjoberg>
I guess, I can check for the existence of a Ruby version installed through RVM, rbenv or similar version managers. If found I'll use that Ruby version, otherwise send a notification to the user that Ruby 1.9+ is required?
<ddd>
hell osx even runs X11 (whether Apple's version or a downloaded source and compile version)
<matti>
ddd: I am just being a tease ;p
<shevy>
I mean the mac users are idiots if they are stuck with 1.8.x
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* matti
hugs ddd too
<ddd>
matti: ahh well, hard to read that from text
<matti>
ddd: :)
<shevy>
Hanmac I dunno, I feel that it is all a big mess, this multiarch stuff
<matti>
ddd: Fair enough, hehe ;]
* Hanmac
is still suprised that apple allows you to download and compile source on a Mac
<shevy>
no wait Hanmac
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<shevy>
someone in here complained about that
<ddd>
i know quite a few linux users that idiotically believe that Macs can't run 'linux' software (aka GNU software) simply because you can't recompile the core OS and apps.
<shevy>
what was his name... Jonnie something
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<shevy>
he complained about xcode growing in size and complexity
<ddd>
thought you might be trying to be in that camp ;)
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<shevy>
and that llvm can not compile everything
<shevy>
which apple apparently loves
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<Hanmac>
shevy you mean JonnieCache?
<shevy>
(I mean llvm)
<shevy>
yeah
<shevy>
JonnieCache it was you!
<JonnieCache>
hello
<JonnieCache>
i think it was 1.9.2 that refuses to compile under llvm
<shevy>
apple sucks!!!
<JonnieCache>
i cant fucking remember theres so many variations and permutations
<ddd>
well it can, but llvm does cause random ruby crashes (even in the current 1.9.3 series. late 1.9.2 series was the first to actively support llvm compiler chains)
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<JonnieCache>
it depends heavily in what order you install stuff as well, xcode, the xcode commandline packages, and the other deps from homebrew/macports
<shevy>
ah well, I'd actually be happy if llvm could replace gcc
<Hanmac>
-jonnieCache do you have played with Crosscompile too?
<matti>
I want Ruby Go bindings.
<matti>
;/
<ddd>
JonnieCache: early 1.9.2 wouldn't. p12x did
<JonnieCache>
no
<passenger_n00b>
Hi! Please, does someone know how to solve this? http://pastie.org/private/07io1dl8tiaqwgxcnc1rpa. It is about using separate Passenger standalone instances (under myapp1 and myapp2 users) and running an init script as root at boot time
<passenger_n00b>
Does anyone have experience with this?
<shevy>
matti you are weird
<matti>
So we can say "GoRuby"
<shevy>
passenger_n00b sorry no clue, never used passenger
<matti>
shevy: Am I?
<matti>
shevy: :/
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<shevy>
matti you want ruby go bindings
<matti>
ddd: I may re-consider the behading of shevy ...
<matti>
;d
<passenger_n00b>
shevy: That's okay, thanks for answering. What do you use to serve multiple Rails apps on a single box then?
<Hanmac>
shevy i thought i was the weird one :(
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<matti>
Hanmac: Oh am I asorry.
<shevy>
passenger_n00b I actually dont use rails :(
* matti
hands the title back to Hanmac
<shevy>
the railers are typically on #rubyonrails, we here tend to focus more on general ruby
<ddd>
smart choice would be nginx + unicorn or thin
<matti>
shevy: We ten to focus on blabbering more ;p
<shevy>
matti I was doing ruby before, I may blabber!
<shevy>
I played with cgi (omg)
<passenger_n00b>
shevy, matti : I see! =)
<shevy>
def params; CGI.new.params; end <--- I was proud
<ddd>
especially if running multiple apps that use different ruby versions (passenger uses 1 ruby)
<shevy>
but I hate CGI, so I must replace it one day
<passenger_n00b>
ddd: Why is that?
<ddd>
passenger_n00b: why is what?
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<shevy>
why nginx is smart, I guess
<passenger_n00b>
ddd: Well, why is it smart to use nginx + unicorn or thin?
<shevy>
do you want a fat unicorn or a thin unicorn
<ddd>
passenger uses 1 ruby for all applications. with nginx + unicorn you can run multiple rubies
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<shevy>
Hanmac only your code is weird, it is very hard to understand
<shevy>
x?>52?#$9ß0v"##"
<ddd>
so if you have a ruby 1.8.7 + rails 2.3.x, and a ruby 1.9.3 + rails 3.2.x you wouldn't be able to run both with passenger. your rails 3.2.x would use the ruby that passenger exposed which would be 1.8.7
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<carloslopes>
nooo
<ddd>
and if you were using gems that targeted ruby 1.9 specificness, it would puke
<carloslopes>
ddd: passenger now has the ability to run multiple ruby
<carloslopes>
version
<carloslopes>
versions*
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<ddd>
nginx + unicorn would allow for the different ruby versions. especially if using RVM installed rubies and per-project files (unicorn respecs .rvmrc files as well)
<passenger_n00b>
ddd: Passenger standalone (embeds an Nginx instance for each app) would allow me to serve several apps with different rubies. My only problem is figuring out how to run the script hosted inside the RVM environment of the myapp1 user as root (required to serve on port 80). But I see what you're saying :)
<ddd>
carloslopes: oh? when did they come into the 21st century?
<carloslopes>
they added that in one of the latest versions
<carloslopes>
ddd
<ddd>
passenger_n00b: see the RVM page for how to do a root-only installation, but A) running rvm under root would replace (as far as the shell would see) the system ruby, B) thats not a supported configuration because it could potentially bust any system ruby scripts, and C) its better to run using unicorn as a regular user and set up nginx on the box to proxy for the apps and use virtual hostnames to decide which unicorn master to proxy to
<carloslopes>
ddd: hm i don't know.. i didn't get the conversation from the start, i only sow your comment about passenger :)
<passenger_n00b>
ddd: You're right, I was trying to avoid running RVM as root as it is not recommended
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<carloslopes>
passenger_n00b: why is it not recommended?
<ddd>
but he could couple nginx + passenger (which is a valid mixture) and A) serve quicker (nginx has been tested to be substantially faster than apache) and B) allow for Least Privs by proxying to unicorn masters based on ServerName entries. (mod_proxy in apache sucks ass)
<ddd>
carloslopes: I explained why
<passenger_n00b>
carloslopes: ddd : Would you use an rvm wrapper or binstubs to do that?
<carloslopes>
ddd: why?
<butblack>
hoelzro: any idea?
<ddd>
scroll up
<carloslopes>
ddd: the only thing that change is the path
<hoelzro>
butblack: all you said is 'same'; what's the same?
<ddd>
carloslopes: untrue
<carloslopes>
ddd: or am i wrong?
<hoelzro>
more importantly, what did you change?
<butblack>
hoelzro: how it returns
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<butblack>
it returns 1 2 3 #=> nil
<ddd>
there is potential for changes in the ruby core by changing versions that could cause any system ruby scripts to break
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<hoelzro>
butblack: what in the code did you change?
<carloslopes>
ddd: i don't use rvm, but i thought that the difference was the path only
<ddd>
unless you can prove 100% that changing rubies will not break them (which requires testing on your part)
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<butblack>
hoelzro: i changed the method by putting puts in it, tried that and then i also changed the call of the method by calling it with puts
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<butblack>
so puts a.call(b)
<ddd>
no, the reason isn't pathing, its version compatibility
<hoelzro>
butblack: ok, think about what you're doing.
<butblack>
and then puts foo(pusher, [1,2,3])
<carloslopes>
ddd: hm i got it
<ddd>
and system is NOT something you want to fuck with without being 110% sure
<hoelzro>
the code I posted here demostrates that puts returns nil
<hoelzro>
so if puts(anything) is the last statement in your method...
<carloslopes>
ddd: yes.. i agree
<hoelzro>
...your method will return nil.
<butblack>
hoelzro: ah i see now
<butblack>
the puts in the block
<butblack>
i took that out
<butblack>
now it returns the array..
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<passenger_n00b>
carloslopes: You always serve one single app by server then? Or do you take the risk that gem1 from app1 collides with gem2 from app2?
<carloslopes>
passenger_n00b: i use bundle to avoid gem collision
<hoelzro>
butblack: ok; what do you expect it to return?
<carloslopes>
bundler*
<ddd>
the *easiest* setup is nginx installed via say homebrew, shutting down the apache that comes with osx, running nginx in its place, setting up the proxy redirect (tutorials all over the place for that as this is a common setup) and running each of the applications either under the same non-privileged user account, or putting each one under its own non-priv'd user attached to a non-priv'd port and making nginx redir to that app
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<butblack>
hoelzro: that's a good question
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<ddd>
then you don't have to futz around with passenger at all, and by using unicorn you can have any combo of ruby + gems that you want, all over port 80 (and non-priv'd ports for the unicorn sessions themselves)
<carloslopes>
ddd: passenger_n00b: i agree with ddd that there is a risk.. but, a lot of people use it in production
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<ddd>
carloslopes: with what
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<carloslopes>
ddd: passenger_n00b: rvm with ruby versions
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<ddd>
basically a common production setup is nginx running as the main web server (priv'd on port 80 just as apache would do), rvm installed rubies (or any ruby manager like rbfu etc), unicorn as a non-rpiv'd user to keep everything running under non privileged users providing greater protection for the box itself
<ddd>
its not a risk
<ddd>
its a risk when you start running things as privileged users
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<carloslopes>
ddd: yes.. i couldn't agree more
<apeiros_>
it's
<carloslopes>
ddd: this is really true
<rfffadffas>
is it possible to automaticly let rails generate the join tables with a manytomany relationship/
<carloslopes>
ddd: never run apps as privileged users
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<ddd>
nginx being the proxy greatly narrows the attack vector and adds the freedom to expand the rubies in use, varying gemsets set by .rvmrc (or appropriate equiv with other ruby managers)
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<carloslopes>
ddd: hm i got your idea now
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<ddd>
and the only reason nginx uses root at all (like apache does) is to attach to port 80 which is a privileged port, and then it too like apache drops elevated privs after that
<ddd>
much better that if your ruby app somehow creates a local security hole, that its confined to a non-priv'd user as well as the likelihood of root elevation is severely minimized unless you also have some other hole in place as well (like unpatched kernels, root attacks via the shell itself etc)
<JonnieCache>
rfffadffas: it would have taken less time to write them yourself than to ask irc :)
<ddd>
but thats all outside what we're talking about anyways and is part of good system management in the first place
<gestahlt>
Hi guys, it might not fit into ruby (although i need it for a project), i need to add multiple images to an archive. Ive got 2 problems with it. 1. i need them compressed and have the file directly added to an archvie. For example: dd if=/source | gzip -c --fastest > /target/filename
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<carloslopes>
ddd: sure
<gestahlt>
2. I need to append more images to an archive like dd if=/source | gzip --append(whatever) > /target/filename
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<carloslopes>
passenger_n00b: the ddd solution is very good
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<carloslopes>
passenger_n00b: but, if your problem is gem collision, bundler solves this for you
<ddd>
plus the speed of worker spawns is faster with nginx+unicorn compared to passenger anyways, another plus :)
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<ddd>
(not to mention a fairly significant memory footprint reduction)
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<passenger_n00b>
ddd: carloslopes Thanks guys, much appreciated!
<ddd>
np
<carloslopes>
ddd: yes
<carloslopes>
passenger_n00b: np
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<carloslopes>
ddd: unicorn is really great
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<ddd>
so far i've found it to be the best solution. not to say there aren't other combinations, just the one i've found to be the most responsive and least potentially difficult to set up quickly
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<Xeago>
does anyone know the default font in android messages?
<carloslopes>
ddd: yes.. unicorn is the best for quickly responses.. but if you need some stream or keep-alive connections it doesn't is the choice
<carloslopes>
ddd: the 'best' IMO
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<ddd>
errr?
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<Hanmac>
shevy in my next life i will make an good ecommerce system ... the current ones are all shitty and have ZERO developer kindness ... (you want to read the doku? you must be login, but you cant login because you are not registerd, and you cant register because you are not a customer)
<ddd>
umm, nginx would handle the persistent connection requirements. its part of the HTTP standard itself. unicorn will keep the worker around for that particular request for however long it needs to. and it has no problem with persistent db connections as well.
<ddd>
what are you speaking about specifically?
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<ddd>
and if you run out of workers due to lots of persistent connections client facing, then you need to A) rethink your choice to persist, and B) how you're coding your app in the first place
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<ddd>
you also need to consider that in the hardware requirements as well (memory, CPU cores, et al)
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<ddd>
if you're going to be leaving a lot of connections open to clients but leave them idle a hell of alot of time, you're right, unicorn probably isn't what you want, but that'd be dumb in the first place. there are other means to accomplish push updating etc
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<ddd>
unless I'm terribly misunderstanding what you're saying, unicorn would seem to be the least of your worries
<ddd>
--
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<ddd>
oo, on a totally unrelated note, seems Microsoft is finally going to build a Linux version of Office, slated for release some time in 2014
<ddd>
interesting
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<ddd>
now if they'd only finally get Office 365 / Office 2013 on the Mac rather than just 2011, I'd be a happy man :)
* apeiros_
doesn't want office on his mac
<apeiros_>
on my work mac, I have it - for some reason installing an update of office requires me to quit safari.
<ddd>
I've Office 365 University. Lovin it.
<apeiros_>
I don't want to know what they installed which affects safari too… scumbags
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<ddd>
oh because of the integration points (preparations for Office 365, 2013) Shouldn't require it for 2011 other than the XPS driver for printing to MS XPS Document Writer
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<moshef>
hi
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<ddd>
anyways, time to grab some coffee and then to do some class work. If I can get these assignments done, I can take my next unit test and be 1 step closer to getting a free book, code, and a semester's worth of time free :)
<moshef>
i have strings in UTF8 format, some of them include non ascii chars that looks weird. problem is - ruby (1.9) manage to read some of those non ascii chars properly, so i don't want to touch those strings, but for some non ascii chars i see crap and i'd like to force encode that. how can i see the difference?
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<ddd>
(if you complete your entire math course in 8-10 weeks rather than the scheduled 16, the college will give you your next semester's book, and online testing code for free, and all completed units will count towards your next semester regardless if you finish all *that* course level's units before the end of the last 8 weeks) (and they do it again the following semester)
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<moshef>
anyonw?
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<Hanmac>
moshef what is your OS?
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<shevy>
hehe
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<shevy>
I'd actually agree with him
<shevy>
for sake of simplicity
<shevy>
problem is, I also grew fond of :symbol vs 'symbol'
<shevy>
you can get rid of one character
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<shevy>
I also don't think it is even possible really
<shevy>
so it is a waste of time to argue about it
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<shevy>
he'd have to create a new language from scratch
<Hanmac>
:"symbol with spaces"
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<ddd>
hehe been following that thread. pretty much the main reason why they're not GC'd is because the core admits that none of them really know how to implement it properly (while also protecting internal symbols from being collected right along with user defined)
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<Hanmac>
i dont want that my objects are beeing deleted, thats why i use symbols (specialy IDs), i use them for C-enum <=> Ruby-Symbol
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<Hanmac>
for me this guy looks like somone that wants to force feaky AS stuff like HashWithIndifferentAccess into core ruby, without thinking about consequecess
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<shevy>
Hanmac I think he just tries to steal time from core
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<moshef>
Hanmac: mac..
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<Hanmac>
moshef so you use 1.9 and your string does looks half good that means some chars are working and some chars are not?
<Hanmac>
are you 100% sure that you used realy UTF8 and not an similar encoding?
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<shevy>
ack
<shevy>
encoding...
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<apeiros_>
shevy's nemesis
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<shevy>
:-)
<shevy>
depends, if things work then I am happy
<Hanmac>
i use 1.9 and i dont have problems with them ... because i use linux and not shitOS
<jrajav>
I don't always use UTF-8, but when I do, I make sure to parse it as a fixed-length encoding
<shevy>
I currently have only one project with encoding problem, the rest works
<jrajav>
He is... The Most Terrible Programmer in the World
<jrajav>
*epic music*
<shevy>
Hanmac what is the default encoding you use?
<Hanmac>
UTF8
<shevy>
yeah, people who use UTF8 tend to have less problems
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<shevy>
hey Hanmac
<shevy>
I am trying to come up with a simpler way to use html form tag in ruby .cgi scripts
<Hanmac>
nokogiri html builder is not possible?
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* apeiros_
thinks anybody using anything else than binary, utf-8, or another encoding of the unicode family, is asking for troubles
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<shevy>
Hanmac hmm, I am thinking of pure ruby
<shevy>
for instance, test.cgi, would have: form('SELF','name_of_form') {} # inside the block comes a bit of code logic
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<shevy>
hmm I am going to look at how rails does that
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<shevy>
form_tag { Form contents }
<shevy>
"it creates a <form> tag which, when submitted, will POST to the current page."
<shevy>
ok, guess that makes sense
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<shevy>
seems as if rails uses name_tag everywhere
<Nom->
Hey guys, got a really strange issue... I've got guard segfaulting when running rspec, but it works perfectly fine via command line. I know it's going to be something to do with my library *somewhere* but i'm not getting a backtrace either, so no idea where to start
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<apeiros_>
Nom-: what ruby version? including patchlevel
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<Nom->
I can rvm up to 385 if you think that might be it
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<apeiros_>
no, 362 was the segfaulting one iirc
<apeiros_>
but you can try
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<shevy>
hmm is: class Foo < Bar, the same as Foo = Class.new(Bar) ?
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<apeiros_>
shevy: for about all practical implications - yes
<shevy>
quite cool
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<shevy>
I am tempted to use the latter from now on :-)
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<shevy>
though it's a bit too verbose.... hmmm
<Nom->
What's wrong with <? Are you bracketist?
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<shevy>
dunno, it's just different you see?
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<Hanmac>
shevy status: i can read files with << and add again and fnmatch patterns too
<shevy>
nice
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<shevy>
Hanmac I will test it extensively as soon as there are examples (dont mind the docu, but I need examples in the event that you wont write documentation)
<Nom->
Not secret, just not useful to anyone to know it (i suspect)
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<Nom->
https://gist.github.com/lstanden/4731634 <-- there's my stacktrace if anyone can point me in the right direction... I'm thinking garbage collection issue, which is probably caused by the way I'm dealing with this C library through FFI, but I'd like to confirm before I go hunting
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<Hanmac>
Nom- you may detect a bug
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<Hanmac>
Nom- you could try to install libgcc-dbg packages
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<Hanmac>
and maybe libcrypto-dbg pack too
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<Hanmac>
that maybe shows the "??" methods
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<Hanmac>
shevy in libarchive gem do you want a feature to set the uname & gname lookup ? currently its only using the standard one, with the lookup you could manipulate what username is written into the archive (hm and maybe an option do disable the standard one too)
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<Trudko>
Guys I have simple Rails form like this http://pastie.org/6087885, but my problem is Ruby related.I would like to ask you what is inteligent way how to field access data from params hashmap, because now In order to access data I have to do this params[:match]['match_players_attributes']['0'][:player_one_points]. To give you idea how the dat alooks like here pic from debugger http://imgur.com/T5KmP
<Trudko>
maybe there nice Ruby way how to access it.
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<Hanmac>
Trudko #rubyonrails
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<Trudko>
Hanmac I asked also there, I am just courious if ruby does not have something fancy for accessing , if I am not wrong hashmap inside of hashmap
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<Hanmac>
there may be no nicer way than params[:match]['match_players_attributes']['0'][:player_one_points] or what do you want should the line look like?
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<Trudko>
I am open to supprises :)
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<Trudko>
if not that is fine I was just courios.
<Trudko>
*curious
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<Hanmac>
this could be possible too: [:match,'match_players_attributes','0',:player_one_points].inject(params) {|k,h| h.nil? ? nil : h[k]}
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<apeiros_>
Trudko: your problem is really a rails one
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<apeiros_>
because the smart way is to use a model and in that case, all you do is pass params[:match] to your Match model
<Trudko>
ok guys so I wll focus my attention there. Thank you for your time.
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<banisterfiend>
apeiros_: are there any tools that can convert erb to haml ?
<apeiros_>
banisterfiend: iirc html2haml has a flag for erb
<banisterfiend>
sweet
<banisterfiend>
thx
<apeiros_>
yupp, seems -e is the flag
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<Nom->
https://gist.github.com/lstanden/4731634 <-- updated with symbols from gcc & libcrypto... i'm going to have to head to bed though... if anyone has some thought and can post to that, woudl be great though :)
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<Hanmac>
the funny thing is that it crash at exit :P
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<shevy>
lol
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<goldenwest>
I'm trying to learn ruby/rspec.... my directory tree looks like test/test.rb, test/spec/test_spec.rb.... inside test_spec.rb I have require 'test', but when I do cd test && rspec spec/ => LoadError No such file to load
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<speakingcode-wor>
goldenwest: i assume you already installed the needed package/gem?
<speakingcode-wor>
might needt o check that your gem directory is in your $PATH env var
<goldenwest>
speakingcode-wor: yes and it is
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<goldenwest>
speakingcode-wor: I don't yet understand how ruby handles versions/gems... but ruby -v shows 1.9.3 and ls ~/.gem/ruby shows 1.9.1
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<goldenwest>
gem -v => 1.8.23 and gem list rspec => 2.12.0
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<speakingcode-wor>
i'm noto sure but gem n ruby might need to be the same version, you might wanna give RVM a try to manage ruby versions but tbh i'm inexperienced with the environment aspects of ruby still
<shevy>
JonnieCache are you planning on EVIL actions
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<Eiam>
thoughts on singletons in ruby classes?
<Eiam>
I have this gem that provides an instance of a class and its called all over the place to get information across other gems & controllers in ruby.. I can pass it around withing specific places but it seems cumbersome to manage that
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<Eiam>
so I was thinking well, the class should just enforce its own singleton so anyone asking into it for information gets the same instance back
<Eiam>
yesterday I was debugging and we had 45 instances of the class, it was ridiculous
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<Eiam>
so I passed it around instead of letting people create new ones and cut it down to about 6 instances which is still too many IMO, but I can't think of another way to solve it aside from a singleton
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<JonnieCache>
Eiam: just put the stuff on the class itself
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<JonnieCache>
Eiam: remember in ruby, classes are objects of class class
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<Eiam>
well, that won't solve it because you will pay the cost of the lookup even if its a class method
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<Eiam>
the expense is really in creation, not in overall resources to hold onto it
<Eiam>
I was not clear enough in my original comment
<JonnieCache>
what creation do you mean
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<Eiam>
whenever you need information from the class it has to load up an xml file
<Eiam>
and do some reads from the filesystem additionally
<abcdefg_>
what do you think about nodejs?
<Eiam>
so making it a class method won't solve that problem
<abcdefg_>
should I learn ruby (and rails) first or first nodejs?
<otters>
rails
<apeiros_>
Eiam: singleton is a poor pattern IMO
<Eiam>
abcdefg_: you are in a ruby channel so likely people are going to say ruby & rails, cmon now
<benlieb>
is there a way to make android apps in ruby?
<apeiros_>
almost in all places where I've seen it, it bit me
<Eiam>
apeiros_: well, Its one I'm very familiar with from objc/cocoa
<Eiam>
but I am looking for alternatives here =)
<apeiros_>
using a singleton for *defaults* otoh is fine IMO
<Eiam>
somehow make every person that calls into the gem aware that they should look for an existing instance & use that instead?
<JonnieCache>
apeiros_: im responding to what you said above. but yeah dont worry it wasnt important ;)
<apeiros_>
Eiam: I actually already said it. I'd have an accessor for a lazy created default and use that as the default value for methods where you pass it.
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<apeiros_>
e.g. class MyClass; def self.default_whatever; @default_whatever ||= new(*defaultstuff); end; end
<Eiam>
ohhh
<apeiros_>
and elsewhere: def foo(values_for_whatever=MyClass.default_whatever)
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<Eiam>
yes good idea
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<apeiros_>
alternatively, redesign your OO, so you have to pass it around less
<apeiros_>
after all, that's one reason to have objects - to store data in the objects, so it doesn't have to be passed around
<Eiam>
well in the suggestd way the object keeps track of itself
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<Eiam>
which i'd prefer
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<Eiam>
thank you
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<Eiam>
shit meeting
<Eiam>
afk
<apeiros_>
shit meetings are awesome
<apeiros_>
hf
<aedorn>
I hope they have air freshener
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<JonnieCache>
real hackers stay on irc during meetings
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<JonnieCache>
tbf real hackers hold their meetings on irc
<JonnieCache>
the implementation is slightly insane but its a great lib
<shevy>
ok
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<Dwarf>
Evening, I'm screwing around with rakefiles and whatnot. Is it possible to run the rakefile and if a gem that is used in the code is not installed, it will install/prompt for install?
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<JonnieCache>
yeah its possible but its a bad idea
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<JonnieCache>
the most you should do is give the user a msg telling them to install it, not attempt to install it yourself
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<v0n>
I think it's not possible to define a module function out of its definition, like this:
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<v0n>
def MyMod::MySubMod.foo; end
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<v0n>
is there another way?
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<fulippo>
ciao
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<fulippo>
!list
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<runixo>
heyas. I need to uncompress a streamed gzip file; since Zlib::GzipReader expects an IO, I'm not sure what to do.. any hints?
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<rking>
runixo: File is a subclass of IO, so you can like, File.open('something')
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<runixo>
rking: yep, but I have each chunk of the file and I cannot feed GzipReader with multiple strings (it expects an initial parameter IO)
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<rking>
runixo: Well, you could implement whatever parts of IO it uses. Like, duck type your way to success.
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<runixo>
rking: mrmr, but I think the problem is on the GzipReader side, because it expects to have the whole data before it starts uncompressing..
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<yfeldblum>
runixo, if you need a real IO with a FD, you can make a pipe and, in a thread, write the chunks to the pipe
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<powe>
hey all, I get "Could not find rake-0.8.7 in any of the sources" from the app I just installed (it worked earlier) however I had to upgrade rka to
<powe>
version 0.9.2 for another app to work. I am think there is a linking issue somewhere but being new to these I have freaking clue where the issue
<powe>
could be or how to resolve this. Any help will be be great.
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<rking>
runixo: Well, if you cat foo.gz bar.gz > baz.gz; baz.gz is now a valid gzip
<rking>
So can you at least operate on self-contained chunks?
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<rking>
(Then repeatedly extract)
<runixo>
rking: oh. I didn't knew that. thanks!
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<aces1up>
if i create a custom exception, what should me initialize functio receieve and super to properly process the exception?
<aces1up>
ex intialize(msg) ?? super(msg) is that is all thats needed?
<runixo>
rking: but open("foo.gz").read(123) might not be a valid gzip..
<aces1up>
I want to ensure backtrace method still works as it should.
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<shevy>
powe are you on debian
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<powe>
almost ;) its ubuntu
<shevy>
yes
<shevy>
is the same
<powe>
yep
<shevy>
they modify ruby
<shevy>
what does "gem env" give you
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<shevy>
also, do you use the debian-ruby or another ruby
<shevy>
look at - INSTALLATION DIRECTORY
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<rking>
runixo: Yes. I'm hoping maybe you can find a way to chunk it up along the lines that are actual .gz's
<Uranio>
powe: yeah is just my google VERY slow, thats why I don't make many questions here
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<jarred>
How do I dynamically get the name of the class that calls a method, within that method? So if Fizz.buzz is called from Foo.bar(), how do I get that Foo was the class that calls that method, without explicitly saying so?
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<jarred>
(that method being Fizz.buzz)
<apeiros_>
jarred: the caller of a method should not be relevant
<apeiros_>
ruby does not provide a mechanism to get the caller (only the backtrace, via Kernel#caller)
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<jarred>
Okay
<canton7>
there's a gem, but it's not production-ready iirc
<apeiros_>
if you want information about the caller, pass it along
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<blf>
When working with an XML document which can contain multiple elements with the same name, but differing attributes. Would it be a bad idea to create a new symbol on the fly for each of the differing attributes found?
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<canton7>
generally auto-generating symbols can be a bad idea
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<blf>
For instance, I could have a document with <Item name="Symbol"> and <Item name="Id"> etc. The problem is that the symbol names change between databases and there is only one generic document type definition.
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<blf>
or rather the Item names change from database to database.
<aedorn>
Random Linux distro Xyz is a "light" Linux distribution that contains the following 400+ applications that are all dependent on each other ... nope, not bitter. Not at all.
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<blf>
I'm wondering, If I create a symbol within an instance method, would that symbol then be tied to that instance?
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<Trudko>
guys I have variable which can have values 1.0 0.5 or 0.0 and I want to format this float to int if value is 1.0 or 0.0 easiest way to do this?
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<Trudko>
ternary operator?
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<Spooner>
Trudko, n = n.to_i if n.to_i == n
<spider-mario>
Trudko: format("%g", value)
<Trudko>
ok thx will check
<Trudko>
and lol at nick spider mario :D
<spider-mario>
:p
<Trudko>
made me laugh hh thx
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<Trudko>
I have been working all day literally over whole night, little laugh helps :D
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<razieliyo>
hi
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<razieliyo>
I have a rsense-emacs specific question, does anyone uses it?
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<mordocai>
I want to write some C code and load it from ruby. It is too much for me to want to use inline, but besides that what would you recommend? It will be a couple hundred lines or less with 10 or so functions.
<Trudko>
razieliyo: out of couriosity are u doing coursera.org course?
<mordocai>
I ask because there appear to be a LOT of ways to do it
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<razieliyo>
Trudko: wtf?
<Trudko>
ok guess that is no :)
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<powe>
hey all still trying here with that "Configuration is not a module" - I am googling it and I can't seriously understand what the error means
<powe>
start loosing hope with that one
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<ryanf>
powe: it's a class
<razieliyo>
Trudko: you guess right
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<powe>
yeah but how this error is generated is byond me
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<shevy>
powe do you use a module called Configuration
<powe>
there is a module named that in the project I am trying to fix
<powe>
gitorious is the project
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<apeiros_>
there obviously also is a class named that
<apeiros_>
and the class is loaded before the module
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<powe>
Gitorious sounds like a pain to install
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<powe>
it worked earlier today and after upgrading rake for another project - all hell broke loose
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<shevy>
powe, look here is an example to trigger this:
<shevy>
class Configuration; end; def foo(i); puts i.class.to_s+' is not a module' unless i.is_a? Module; end; foo Configuration.new
<shevy>
Configuration is not a module
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<shevy>
powe so either whoever wrote it made a mistake, or whoever uses it is making a mistake
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<powe>
its probably me - still trying though
<powe>
join #gitorious
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<powe>
sorry forgot the slash
<Hanmac_>
gitolite is cool
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<aces1up>
i want to use the splat operator to split and array to send to a function, how would i do this if the splat operation may be performed on a string or an array?
<aces1up>
what i mean is the value being sent to the function could be a String or an array.\
<aces1up>
do i need to specifically check to see if its a string? doesn't seem to ruby too me.
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<powe>
Hanmac_, it is cool - and I bet its less painful
<Hanmac_>
after you configured it, it is
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<heftig>
aces1up: splat tries to convert the object to an array first. with a string, that just wraps it in an array so the splat ends up a no-op
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<heftig>
i.e. foo(*"bar") == foo("bar")
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<jellosea>
can a method take two parameters and a block?
<banisterfiend>
jellosea: no, that's too much for ruby to handle
<jellosea>
how do i make the method declaration and call
<banisterfiend>
r u trying to breka the system
<jellosea>
banisterfiend: hahah no seriously
<banisterfiend>
break*
<jellosea>
cos it works with one - like method(param) {|x| puts x } works
<jellosea>
but method (param1, param2) { |x| puts x } doesnt work
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<jellosea>
def method (param1, param2, &x) is the declaration
<klj613>
well some reason when i do that a error coming up.. so i guess its something else.
<canton7>
what error?
<canton7>
(that usually helps)
<havenn_>
klj613: Are you using Ruby 1.9?
<klj613>
probably. im new to ruby and i can bearly get it to work sometimes (even with rvm)
<klj613>
it was a different error anyway..
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<bean>
>> foo = { :bar => [ :foo, bar] }
<eval-in>
bean: Output: "/tmp/execpad-ae83d91aa35c/source-ae83d91aa35c:1:in `<main>': undefined local variable or method `bar' for main:Object (NameError)\n" (http://eval.in/9159)
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<canton7>
even so, "Forbidden syscall pipe". Unsurprisingly, they've anticipated you...
<apeiros_>
runixo: playing around with eval-in is not tolerated, please stop.
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<havenn_>
i'd rather not have the bot, personally :P
<hoelzro>
I like having it around
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<hoelzro>
makes it easy to demonstrate code
<apeiros_>
just that the output format of eval-in is ugly
<havenn_>
apeiros_: agreed!
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<havenn_>
does keep us company on those cold nights though... my only friend, a bot
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<Hanmac_>
apeiros_ the bot has still the problem that you cant use it in private chat ... :(
<apeiros_>
I know
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* apeiros_
continues working on his i18n utility
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<Hanmac_>
shevy i get the pattern NICE working ... they even work when you use "*/*.rb"
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<emocakes>
hallo hanmac
<emocakes>
moin
<emocakes>
:p
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<xybre>
So, I'm wanting to maintain a fixed environment, and then have multiple different pieces of code (methods, objects, whatever) potentially modify the environment - locally, without interfering with eachother. I can do this with `fork`, but its less portable. (rspec does something like this, I believe)
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<angelixd>
xybre: what you are thinking of is called dynamic scoping
<angelixd>
also, what is up :-P
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<Muz>
/w 32
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<heftig>
xybre: that's provided by the ruby 2.0 refinements, i guess
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<ner0x>
Has anyone done any work with iCalendars or vCards? Know of any gems to look up as a reference/guide etc. Any leads would be appreciated.
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<kmicinski>
Why does line 4 print 'local-varaible' and line 5 print nil
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<kmicinski>
It was my understanding that both of them should print nil, but I don't see why line 4 gives a local variable
<kmicinski>
(It seems lambda causes the interpreter to "reach out" into the scope)
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<xybre>
What I want is an immutable environment with each actor being able to "change" the objects in the environment, but only for their context. It's not a local variable, its the entire global context of the application. This is why I said "fork" would work.
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<xybre>
However, fork isn't particularly portable. (noop on Windows, and Jruby requires special options to enable it)
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<heftig>
xybre: there's been some multi-vm work
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<xybre>
Rspec does reset objects between tests right? So it must be doing something similar to this. I was hoping for the name of the tecnique or something so I could avoid reading all of Rspec's source code to figure it out :)
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<atmosx>
hello
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<Spooner>
xybre, Rspec doesn't reset anything any more than you do in #before/#after/#let
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<gilligan_>
any vim users in here ? 'require nokogiri' doesn't work when run inside a vim ruby code block - i'm trying to understand what paths i might have to specify or configs i need to fiddle with
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<xybre>
Spooner: Ah right. So does it not do anything other than overwrite the objects each time? That would produce errors for Constants.
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<hoelzro>
gilligan_: your Vim was probably built against /usr/bin/ruby
<hoelzro>
so you have to find out which paths it uses
<gilligan_>
hoelzro, right thanks.. i just figured out looking at $:
<hoelzro>
/usr/bin/ruby -e 'puts $:' should tell you
<hoelzro>
ok, cool
<gilligan_>
hoelzro, thanks though
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<rotor_>
does anyone know howto make a ruby script launch into the background and stay there similar to using & on the cmd line from within the script itself
<rotor_>
?
<yfeldblum>
rotor_, Process.detach
<rotor_>
rthanks yfeldblum
<dustint>
away not busy
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<greenarrow>
Getting No connection could be made because the target machine actively refused it
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<jarred>
say I'm a complete idiot and I have a method that calls another method based on user input, e.g. Object.send(params[:method].to_sym), what's the worst thing that someone could do?
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<Trudko>
xeago k did the trick somehow i think that my ide managed that automaticallz "/
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<banisterfiend>
jarred: delete your whole hard drive?
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* greenarrow
slaps banisterfiend around with a large trout
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<csmrfx>
jarred: install a malware command computer, gather all your nude photos and make a pron site with them and steal your cc #
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<banisterfiend>
jarred: take over your whole past and future and leave memories that disgust you
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<Kuifje>
that sounds about right
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* csmrfx
one simply doesnt walk into the user input
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<jarred>
and what if it was a subclass of Object?
<jarred>
Would that change anything at all?
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<banisterfiend>
jarred: every object is an instance of a subclass of Object
<csmrfx>
only thing that changes is proper sanitation and safe parsing of user input
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<jarred>
yeah I'll just sanitize it properly instead of being lazy
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<csmrfx>
sanitytize
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<Trudko>
I am validation model for uniquenese but when I get validation error exception is thrown and I got nastz looking web page rather then nice error message on my page , what to do about it? my code http://pastie.org/6090899
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