<mercwithamouth>
is it possible to return functions in ruby?
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<MrZYX>
mercwithamouth: you probably want to return a proc or lambda instead but you could in theory grab the method object of a function and return that
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<shevy>
mercwithamouth try method(:name)
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<connor_>
Hi, any advanced suggestions for tracking a memory leak in Ruby?
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<connor_>
(I'm currently logging memory and not detecting any delta in my symbol count, no hanging references etc)
<mercwithamouth>
hmm what if i did def foo x = 22 end def blah return method(:foo) end that clearly doesn't work, but how would i go about writing that correctly?
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<banister`sleep>
mercwithamouth: that does work
<connor_>
banister`sleep: Ok, I'll dig in. Thanks for passing it along, will update.
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<mercwithamouth>
banister`sleep: ahh actually you're right =)
<mercwithamouth>
oops...
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<shevy>
mercwithamouth ewww you omit the () you evil person you :(
<MrZYX>
I'm interested what could be a valid use case for that?
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<mercwithamouth>
MrZYX: in scala it's more than reasonable when dealing with higher order functions....i just like to take new things that i'm learning and implement them in different languages.
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<MrZYX>
still, so when would you do that? in ruby if I need my caller to say which method he should call at a later point I think I'd prefer to give him a symbol of the right name or something like that so he can call send
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<MrZYX>
yeah sure, but I don't think that's the point currently
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<lsoa>
I can define a private method using rb_define_private_method in C. But how do I make 'new' private?
<shevy>
mercwithamouth seems to be almost identical to what you can do in ruby, via raise("error: type mismatch: \nfound : etc etc etc..") unless input.is_a? Fixnum, or something like that
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<shevy>
lsoa does new exist as such? isn't it some *alloc* name instead?
<MrZYX>
shevy: mercwithamouth asked how to return a function in ruby, I got interested in a valid use case for that, he came up with that example, which uses no function passing at all :)
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<shevy>
hehehe
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<shevy>
yeah mercwithamouth
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<shevy>
you need something a little bit more complicated than that!
<mercwithamouth>
shevy: you would have to do odd("24".toInt)
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<MrZYX>
mercwithamouth: don't want to offend you or anything, just really curious :)
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<shevy>
mercwithamouth yeah, very similar to ruby too, ruby uses .to_i though which is almost identical (or Integer("24") but that's not as elegant)
<mercwithamouth>
MrZYX: same...to be honest this is the first time i've done it. i play with ruby...so i figure in order to learn two styles of coding at the same time once i learn one thing i MUST immediately duplicate it in the other language
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<shevy>
well, you get one line saved with scala of course, as it is part of the method definition
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<shevy>
that : Int thing there
<lsoa>
shevy: the point is that under ruby I can simply say private_class_method :new in the class definition right? How do I perform the same operation under C
<shevy>
hmmm I am not sure how to simulate the same in ruby
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<shevy>
I can? I am not sure... let me try that
<lsoa>
I don't bind a function to new, I bind one to initialize
<lsoa>
and define an alloc function
<shevy>
oh cool
<lsoa>
but from what I've seen so far, you're not supposed to touch new
<shevy>
class Foo; private_class_method :new; end # => Foo; Foo.new # NoMethodError: private method `new' called for Foo:Class
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<shevy>
you can!
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<shevy>
you can break all classes that way :)
<shevy>
well, excluding class methods of course
<shevy>
hmmmm
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<lsoa>
problem is that the C api is not exactly well documented
<shevy>
hahaha
<shevy>
look lsoa:
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<shevy>
class Bar; private_class_method :new; def self.new; puts 'Hi there from Bar'; end;end; Bar.new# Hi there from Bar
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<shevy>
it's fake! :D
<mercwithamouth>
MrZYX: ehh i have an example coming
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<lewix>
:self.new
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<shevy>
ewww
<shevy>
:self works ???
<lsoa>
2.0.0-p0 :011 > SingletonLike.new
<lsoa>
NoMethodError: private method `new' called for SingletonLike:Class
<lsoa>
anyway
<lsoa>
that'
<lsoa>
that's not the point of the question :)
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<shevy>
:D
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<shevy>
hmm guys
<shevy>
I have about 30 methods like this:
<shevy>
def teal; TEAL; end
<shevy>
def white; WHITE; end
<shevy>
I can use define_method() instead?
<MrZYX>
I'd probably do it
<shevy>
array_with_all_names.each {|name| define_method(name.to_sym) { Object.const_get(name) } } # something like that perhaps?
<MrZYX>
or even method missing if there's nothing else in the class
<shevy>
hmmmmmm I am scared by method_missing
<shevy>
I once delegated everything from one class to the other to the next one all with method_missing
<shevy>
I no longer understood what I did ~3 years later :(
<MrZYX>
yeah I'd really only do it if it' the only thing the class
<MrZYX>
but that array/define_method solution sounds sane enough to me
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<mercwithamouth>
my lord...
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<mercwithamouth>
MrZYX: ehh i had to result to an example of the book...i was hoping to use this as an opportunity to come up with my own http://cl.ly/image/3A141K1H1N0Z
<CodeGnome>
What am I misunderstanding about Ruby's File#flock? f = File.open('foo', File::RDWR|File::CREAT, 0644); f.flock File::LOCK_EX; g = File.open('foo', File::RDWR|File::CREAT, 0644); g.flock File::LOCK_NB
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<mercwithamouth>
MrZYX: yeah a lot of what i typed you could simply use a _ and pass in any type you want and have it inferenced...i'm not there yet =P
<banister`sleep>
MrZYX: why wouldnt you use a block
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<MrZYX>
that works too sure, just translates the example better here I think
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<mercwithamouth>
they're scaring me now
<mercwithamouth>
def on[A, B, C](f: (B, B) => C)(g: A => B): (A, A) => C = (a1, a2) => f(g(a1), g(a2))
<MrZYX>
but it kinda brings me back to the original question: what would a good usecase be to return a method? :P
<mercwithamouth>
case class Person(name: String, age: Int); val p1 = Person("Bob", 12); val p2 = Person("Bill", 13)
<fp->
can anyone help me with a regex for parsing email senders, which can be anything like "Full Name <email@address.com>" or "email@address.com" or "\"Full Name\" <email@address.com>"
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<fp->
all i'm really needing is 2 parts: name (without quotes) and email
<fp->
Name can be nil
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<fp->
I'm just catching incoming emails and need to split up that data
<fp->
this works well for splitting up Full Name <email@address.com> /([^<]+)\s<(.*)>/
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<fp->
sn0wb1rd: thanks
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<fp->
anyone here?
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<sam113101>
yes
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<fp->
ok then
<fp->
i guess this must be a challenge
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<sam113101>
life is challenging indeed
<sn0wb1rd>
fp-: How does this work? /["a-zA-Z ].*<.*@.*\..*>/
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<fp->
i'll give it a go and let you know
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<fp->
doesn't provide the two parts
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<fp->
was wanting two parts: name, email
<sn0wb1rd>
Oh you need to split the data
<sn0wb1rd>
I see
<fp->
and if no name is present, just the email
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<fp->
the email address parsing part doesn't even really need to very strict
<fp->
since i'm just catching emails as they are being delivered by an email server
<fp->
doesn't require validation… no user input
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<sn0wb1rd>
This should give you those two parts: /(["a-zA-Z ].*)\s*<(.*@.*\..*)>/
<sn0wb1rd>
You can access them with $1 (name) and $1 (email)
<sn0wb1rd>
But you should do a $1.strip to remove the extra space
<fp->
so should I also do a $1.delete('"')
<fp->
for emails like "Full Name" <full@name.com>
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<fp->
that regex doesn't work for just emails without names
<fp->
i.e. user@domain.com
<fp->
that's my issue
<fp->
i have 3 types of emails coming in
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<fp->
Full Name <user@domain.com>
<fp->
"Full Name" <user@domain.com>
<fp->
user@domain.com
<fp->
that's all I've seen so far
<fp->
maybe there's also Full Name<user@domain.com> or just <user@domain.com>
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<sn0wb1rd>
checking out
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<lsoa>
Hanmac: any chance you're actually there? :)
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<sn0wb1rd>
fp-: email =~ /(["a-zA-Z ].*)<(.*@.*\..*)>/ || email =~ /()^<(.*@.*\..*)>/ seems to be working but there should be a simpler way to do it :)
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<fp->
yeah seems like there would be
<fp->
self.email_address = from.match(/\<(.*)\>/)[1] if from.include?('<')
<aedornm>
But if you have names with accents and stuff... that would be ... hmm
<fp->
i'll try it
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<fp->
pretty darn good so far
<fp->
even managed to strip out the quotes from the full name
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<aedornm>
It'll fail when you have character accents
<fp->
hrm
<fp->
so same issue with Mail
<fp->
what do you think I should do?
<fp->
maybe avoid regex and just use split?
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<fp->
"Full Name <email@address.com>".split('<', 2).last.delete('>')
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<fp->
self.full_name = "Full Name <email@address.com>'.split('<', 2).first.strip
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<aedornm>
Yeah, for the full name. I'd keep the email regex. Probably can do something better with the name, though. I'm being distracted by Wreck-it Ralph
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<fp->
parts = from.split('<', 2)
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<fp->
self.email_address = parts.last.delete('>')
<fp->
self.full_name = parts.first.strip if from.include?('<')
<fp->
seems to pass all tests
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<pen>
unless you need system wide
<hemanth>
sudo aptitude install build-essential libssl-dev libreadline5 libreadline5-dev zlib1g zlib1g-dev; # to fix zlib dep and get other deps sam113101
<hemanth>
sam113101, do what RickFromTheSOC said
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<sam113101>
must I reinstall ruby after all those things are installed?
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<sam113101>
how am I supposed to do that
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<RickFromTheSOC>
how did you get it installed before?
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<sam113101>
ok, reinstalling fixed it
<sam113101>
thanks guys
<sam113101>
everything's working
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<hemanth>
enjoy
<sam113101>
:)
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<Hanmac>
lsoa now i am back again
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<otherj>
if console returns [] for an instance var, and you want to conditionally check for it to contain something, is it best to use !@var.nil? @var.present? !@var.empty? i'm trying to conditionally check it and when it returns [] it's not hitting the else
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<cmyers>
Looking at the Memoizer gem, but I want to memoize (or not) per-instance, rather than per-class. e.g. I want to have some instances of the class use memoization, and others not. Anyone know of an existing gem that does this?
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<FuzaiDesktop>
http://pastebin.com/rdQpFRF7 I'm using Regex with Ruby and i'm trying to extract everything between the 16 white spaces and next 3 white spaces "Toyko, Japan" in the example
<FuzaiDesktop>
I tried /(\w+), (\w+) / but had no luck
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<pythonista>
within an 'each' block of a hash iterator-- how can i access the next k/v pair that's coming down the pipeline?
<pythonista>
is this possible?
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<aedornm>
FuzaiDesktop: /\w+,\s\w+/ for that example
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<FuzaiDesktop>
\s means white space right?
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<aedornm>
yes
<FuzaiDesktop>
so /(\w+,\s\w+)\s\s\s/ ?
<FuzaiDesktop>
To put Tokyo, Japan into $1?
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<aedornm>
you don't need the extra 3 \s at the end
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<FuzaiDesktop>
ok
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<FuzaiDesktop>
Thank you
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<aedornm>
pythonista: You can't, but you can use #each_cons instead. hash.each_cons(2) {|x,y| ...} will pass first and next, but it won't pass the last element if you need to iterate over that separately.
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<Guest45517>
hi all, i'm trying to install redmine 2.2.3 on windows server 2012 x64, with mysql. i have a lot of trouble, mainly with imagemagick and with mysql connector too. is there a "step guide" (i've tried to follow the wiki's one, without success) that can help me? i know that this is not mainly a ruby problem, but i think that the issue is related to the gem installation of the product...
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<lewix>
I installed rvm too
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<Hanmac>
lewix ... did you ruby with rvm or do you have an extra ruby?
<Hanmac>
lewix does "which ruby" works for you?
<Guest45517>
have anyone info on how to have ruby up and running onto windows server? i need to install redmine but the guide of redmine have a general overview of the ruby, rubydevkit, rmagick gem, mysql gem, etc ..
<apeiros_>
the stdlib is distributed in the paths listed there
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<apeiros_>
for me it's 9 dirs
<Hanmac>
apeiros_ for sample my stdlib is slitted in two paths because of the --enable-multiarch flag
<apeiros_>
ah, sorry, 8
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<apeiros_>
Hanmac: yeah, that's why I said "distributed". I don't think mine is with multiarch flag, and still I have arch specific paths in $LOAD_PATH
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<lewix>
Hanmac: any idea where i can get a clear explanation of the ruby install dir tree
<apeiros_>
and every distro can make up their own decisions too… (I'm looking at you, apt!)
<lewix>
apeiros_: thanks
<apeiros_>
lewix: ruby -e 'p *$:'
<Hanmac>
i have 8 dirs too, but my one are a little bit mixed :P
<apeiros_>
I have 3 times vendor, 3 times site, 2 times plain ruby
<lewix>
apeiros_: same
<apeiros_>
I think stdlib is in the 2 non-vendor non-site
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<apeiros_>
vendor is for the distros to use I think, for libs they want to ship with ruby
<apeiros_>
site is where old school setup.rb installs end up
<apeiros_>
not sure anymore, thogh. it's all gems now anyway
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<lewix>
apeiros_: site is for third party
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* Hanmac
has 3 vendor, 3 site, 2 default ruby too ... but my pathes are "rearranged"
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<hemanth>
Hanmac, what's new? Was reading about authentic happiness :D
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<Hanmac>
hemanth yesterday i was pissed because they miss to make a struct stat -> VALUE method in the C-API public
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<hemanth>
Hanmac, yikes!
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<Hanmac>
there is a static VALUE stat_new(struct stat *st) method ... but its not visible form the outside :/
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<hemanth>
hmm....
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<becom33>
https://gist.github.com/anonymous/8750a92097bce4f1da0e in this script when I do "ruby test.rb speak --file demo" it returns the error test.rb speak requires at least 1 argument: "test.rb speak <What to speak>". what I want to get is the file I have mentioned is not there
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<epta>
How can I find a key, which value satisfy some predicate?
<epta>
In hash obviously
<hoelzro>
epta: use Hash#select
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<hoelzro>
are you using the hash for its semantics as wel?
<hoelzro>
*well
<hoelzro>
or are you just using it to maintain a collection of associative data?
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<Hanmac>
Hash has thanks to Enumerable also an #find method
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<noodl>
hi. i'm sure there was an alternative to rvm/rbenv that simply set some env vars in the shell. called something like chrb or cdrb, did i dream that? can't find it anywhere :(
<hoelzro>
chruby
<hoelzro>
noodl: ^^
<noodl>
ah! ty ty ty
<noodl>
got it. ace :)
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<regedarek>
How will be the easiest way to compare slugs before and after update friendlyID ?? save slugs to text file?
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<Hanmac>
regedarek ... is that a rails question?
<regedarek>
i guess more ruby because i just want to compare two columns
<hoelzro>
when I compare slugs, I usually use a ruler
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<hoelzro>
and compare length, then width
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<hoelzro>
then weight, and finally racing speed.
<Hanmac>
shoundt you also compare the type, so an "Housed" and a "nude" slug?
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<at_>
Hi, I'm using data.unpack('v*')[0] to get the integer value of certain hex data. The problem is when data is just a byte (that obviously I get nil)
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<at_>
any way to add get the integer data (little endian) of any set of hex bytes?
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<mysterty>
Hello, i'm installing gitlab on my fresh installed server, and i have an error : " An error occurred while installing mysql2 (0.3.11), and Bundler cannot continue.
<mysterty>
Make sure that `gem install mysql2 -v '0.3.11'` succeeds before bundling. "
<mysterty>
but I have already mysql installed
<mysterty>
and i don't know about a "mysql 2"
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<mysterty>
what is it exactly ?
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<mysterty>
(i don't know ruby, i'm php dev)
<JonnieCache>
the 2 refers to the new version of the mysql adaptor
<JonnieCache>
its not referring to a new version of mysql itself
<tobiasvl>
mysterty: php?! you have my condolences
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<AzizLight>
Hi everybody
<AzizLight>
is it possible to convert a Hash into an object in ruby?
<AzizLight>
without monkey patching that is
<wobblini>
AzizLight: a hash is an object
<mysterty>
whitequark, JonnieCache, so, it's just a kind of "plugin" for ruby to communicate with mysql ?
<JonnieCache>
exactly
<JonnieCache>
its a Gem, which is how ruby packages code
<mysterty>
tobiasvl, yes, i know, i'm strongly thinking about switching to ruby or python or java :p
<JonnieCache>
mysql2 is a LOT better than the original mysql gem
<AzizLight>
wobblini: everything is an object in ruby, I know that. What I want is to access the Hash keys with the dot notation not the hash[:key] notation
<mysterty>
JonnieCache, thx !
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<wobblini>
AzizLight: have a look at OpenStruct (require 'ostruct') -- that might help. you can initialize an ostruct with a hash and then the ostruct has those methods with those values.
<tobiasvl>
AzizLight: look at method_missing
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<tobiasvl>
or maybe ostruct is a better idea
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<wobblini>
AzizLight: OpenStruct won't work with all hash keys, though (for example, not numbers)
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<wobblini>
AzizLight: it basically wants symbols or strings, or anything with a to_sym method
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<wobblini>
AzizLight: then again, you probably aren't expecting to create a method called 123 anyway.
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<fuzai>
すべての言語を話す！
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<lsoa>
Hanmac: good morning
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<fuzai>
おはようみんな！
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<Hanmac>
lsoa depends on the local time ... its now 14:12 for me
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<lsoa>
Hanmac: so I just found out about ffi... have you used it? Any issues I should be aware of?
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<lsoa>
local time is the only time :D
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<lsoa>
I don't believe in timezones, this is liberal propaganda.
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<Hanmac>
lsoa i have seen it, but because the libs i bind are in C++, FFI does not work for me ... and i want to take control over when an object is destroyed or GC'd
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<whitequark>
lsoa: but what if you have several local times
<lsoa>
whitequark: blame obama.
<whitequark>
lsoa: but what if it's russia
<whitequark>
oh well
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<lsoa>
Hanmac: I see. I'll give it a try since my lib is in C
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<hemanth>
:D
<banister`sleep>
Hanmac: ruby 2.1.0 ???
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<Hanmac>
banister i using trunk/daily/nighty/git-repo
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<hemanth>
mkmf vs inline(:C)
<hemanth>
inline is supposed to bad, right?
<banister`sleep>
nothing bad about it
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<hemanth>
needs a gem install inline?
* Hanmac
still prefers C++ code
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<whitequark>
Hanmac: it doesn't make sense
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<hemanth>
Hanmac where in specific?
<whitequark>
there isn't a matter of preference or not. C has a well-defined ABI on any platform, and everything knows to interface with it. C++, on the other hand... mostly does. And nothing can interface with it due to sheer complexity of the beast.
<Hanmac>
hemanth & whitequark: for my bindings, because my binded libs are C++ too
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<apeiros_>
Off-topic: does anybody have good resources about spam with regards to your own company? i.e. what do you do to not be considered spam, how to stop spoofers (e.g. via SPF) etc.? (cross posting in #rubyonrails)
<maxmanders>
When would I choose to use string.scan(/regex/).flatten versus string.match(/regex/).catpures - I believe they both return an array of matched groups?
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<apeiros_>
.match always only gives you the first match
<apeiros_>
also .flatten'ing a scan result seems like a bad idea to me
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<apeiros_>
at least I see no use-case where that's more useful than retain the array of arrays
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<maxmanders>
Okay - well let me ask a different question - given a string and a regex containing many match groups; what's the best way to return those match groups as an array
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<apeiros_>
define 'best'.
<apeiros_>
scan will do that
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<maxmanders>
A contrived non practical example: "2013-03-08".<something>(/(\d{4})\-(\d{2})\-(d{2})/)… and by best - I mean idiomatic to Ruby
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<apeiros_>
you don't have multiple matches there
<maxmanders>
i.e. I realise for this example, regex wouldn't be the way to go… but just as something concrete
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<apeiros_>
if you expect only a single match (which can have multiple captures, that's unrelated)
<maxmanders>
One matching group for (\d{4}); one for (\d{2}) and one for (\d{2}) - three
<apeiros_>
then you use String#match
<maxmanders>
Apologies - wrong word… I meant capture group rather than match.
<apeiros_>
str.match(regex).captures is the same as str.scan(regex).first
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<apeiros_>
well, almost, the former can explode if you don't have a match (since you'd call nil.captures)
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<maxmanders>
Okay, so String#match will return an object that I can use #captures[N] on to return the Nth capture?
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<apeiros_>
maxmanders: ri MatchData
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<maxmanders>
apeiros_: thanks - I should rtfm ;-)
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<shock_one>
What is the most elegant way to make Dir.chdir execute the attached block in current directory, if the argument directory doesn't exist?
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<Spooner_>
Make the block into a method (or lambda) and if File.directory? bleh; Dir.chdir(bleh) { meth }; else; meth; end
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<Spooner_>
Though those are not a good list. green_shoes gem is better than shoes and FXRuby is long dead (and broken).
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<xeronic>
Spooner_: Thanks! You dont happen to know which is "the best" framework? Shoes is the most popular but I dont think it is active anymore. You know if any is capable of showing images/text on the screen, maybe on a transparent form?
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<Spooner_>
green_shoes, as I said, is the up-to-date version of shoes (and is a gem).
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<Spooner_>
Doubt any of them can have transparent windows. All should allow forms though.
<shock_one>
xeronic, can you use a different language? Because ruby isn't the most suitable for GUI apps.
<Spooner_>
I played with wxruby recently and it seemed OK.
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<Spooner_>
shock_one, There is nothing wrong with Ruby as a GUI application. It is just that not many people are keen to keep GUI bindings up to date, it seems!
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<epta>
execjs/runtimes.rb:51:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
<xeronic>
Thanks for all tips, I think I'll check out green_shoes
<epta>
What am I doing wrong?
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<MrZYX>
epta: did you read that link?
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<epta>
MrZYX: should I install another gem? One of these?
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<epta>
Or what it wants that I'll do
<MrZYX>
epta: iirc only half of the ones listed are gems
<epta>
Ok, I'll better install execjs's ebuild with all depends
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<pskosinski>
gem install rest-client, then I want to require 'rest_client', error, no such file…
<pskosinski>
what the…
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<pskosinski>
I tried require 'rest-client' too
<pskosinski>
Long time ago I was installing it on desktop using gem and it's still working. Now I wanted to install on different machine, not working
<apeiros_>
oh, though, that graphing lib might use it for more
<apeiros_>
gruff
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<fsperling>
Hi, any recommendation what to use to control a rackup app via init.d services?
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<fsperling>
or how to create an init.d script for a rackup app?
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<mirkgeo>
Hello
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<mirkgeo>
When I do rvm install ruby 1.9.3 I get this: st.c:520:35: error: implicit conversion loses integer precision: 'st_index_t' (aka 'unsigned long') to 'int' [-Werror,-Wshorten-64-to-32]
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<hoelzro>
mirkgeo: what OS are you on?
<mirkgeo>
hoelzro: mac
<hoelzro>
do you have an env flags set that would affect the compiler's warnings/errors?
<atmosx>
once you go mac, you never go back!
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<mirkgeo>
hoelzro: how do you mean?
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<hoelzro>
mirkgeo: I mean do you have CFLAGS or anything like that set
<hoelzro>
atmosx: not true!
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<mirkgeo>
hoelzro: how do I see that?
<hoelzro>
mirkgeo: env
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<mirkgeo>
hoelzro: cannot see anything there about cflags
<hoelzro>
interesting
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<mirkgeo>
hoelzro: so? :)
<hoelzro>
I don't really have any other ideas
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<hoelzro>
if I were sitting at your machine, I'd probably be able to help
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<mirkgeo>
Ah, ok, damn.
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<mirkgeo>
atmosx: maybe you have an idea? :D
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<atmosx>
nope, everything workds here
<atmosx>
works fine
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<hoelzro>
mirkgeo: what compiler are you using?
<mirkgeo>
hoelzro: it looks like the log says CC=clang
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<hoelzro>
mirkgeo: what's the patch level of ruby?
<hoelzro>
ruby-1.9.3-p?
<mirkgeo>
392 I think it choose
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* hoelzro
tries
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<hoelzro>
mirkgeo: have you tried building it by hand?
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<mirkgeo>
hoelzro: no, just rvm install ruby 1.9.3
<hoelzro>
try building it by hand, see if that changes things
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<mirkgeo>
hoelzro: did it work for you with clang?
<dominikh>
whitequark: it needs more RAM than I have money for right now ;)
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<whitequark>
dominikh: how much?
<Spooner_>
dominikh, Why not host it on Github?
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<whitequark>
I have spare ram on wq.org
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<dominikh>
whitequark: not much per se, it's just a lightweight padrino app. but my server's swapping as is :)
<whitequark>
dominikh: how about I give you a shell account?
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<dominikh>
whitequark: ah, darn. DNS might be a problem
<whitequark>
can you CNAME it?
<solidoodlesuppor>
dominkh: Do you have an example for generating daily logs?
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<whitequark>
dominikh: also I have my own DNS master/slave :)
<dominikh>
whitequark: thing is, I might have stuff that relies on cinchrb.org pointing to my current server
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<whitequark>
(own master, linode's slave)
<whitequark>
I see
<dominikh>
whitequark: it's appreciated though :) I'll figre something out
<whitequark>
'k
<solidoodlesuppor>
dominikh: Cause' I see there is a logging class.
<dominikh>
solidoodlesuppor: a logging interface, yeah. there are a couple loggers implemented you can look at. none do log rotation, but that should be doable
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<solidoodlesuppor>
dominikh: Dumb question, are logs kept by default? If so where do they live?
<shevy>
question - can we use unbind to steal a method from one class, and then lateron bind it to another class again? (unbind will give us an object of class UnboundMethod)
<shevy>
so far it seems as if UnboundMethod can only work on the same class again? hmm
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<dominikh>
solidoodlesuppor: Cinch is less of a full blown framework than it is a library. so no, it doesn't keep any logs. it only prints logs to stdout, and that includes a lot of debugging output as well
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<solidoodlesuppor>
dominikh: But it would be easy to just send that a local file right? I really don't want to play around with Autumn just to read last nights IRC complaints ;)
<breakingthings>
solidoodlesuppor: cinch supports plugins, someone's probably written a logger already.
<breakingthings>
might want to search around.
<dominikh>
solidoodlesuppor: yeah. when you initialize a logger, you give it an IO object. can be stdout, can be a File object
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<dominikh>
solidoodlesuppor: you could very well use the Zcbot logger, which just logs irc in/out messages (named after Zcbot, because pisg supports that format)
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<dominikh>
solidoodlesuppor: so something like f = File.open("foo.log"); bot.loggers << Cinch::Logger::ZcbotLogger.new(f); (and don't forget to require "cinch/logger/zcbot_logger")
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<solidoodlesuppor>
Now, I'm about to showcase my ruby ignorance here. Wouldn't require cinch already cover that?
<dominikh>
solidoodlesuppor: nope. cinch itself doesn't require that logger because most people won't use it
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<dominikh>
solidoodlesuppor: requiring cinch just requires cinch.rb, which in turn requires a bunch of stuff itself. that logger isn't one of them
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<Catbuntu>
Hi
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<shevy>
Hey Dogbuntu
<Catbuntu>
haha
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<shevy>
whatcha coding lately?
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<breakingthings>
apt-meow
<breakingthings>
apt-meow catnip
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<shevy>
lol
<shevy>
apt uses perl ...
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<whitequark>
perl is awesome
<whitequark>
compared to python in system software these days
<shevy>
cilquirm ok, how else do you want to tell the ruby parser what you mean then? do you suggest that ruby automagically knows where everything is without you having to namespace it?
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<solidoodlesuppor>
dominikh: Trying to get that block from above to work
<shevy>
D = M::N::D
<shevy>
d = D.new
<shevy>
here is another way
<solidoodlesuppor>
Not much luck but still trying
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<shevy>
one of the biggest reason for namespacing is that you can use the same constant names, in different namespaces
<dominikh>
solidoodlesuppor: in case of doubt you can always pop into #cinch. some helpful folks there. I'm really going to sleep now though
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<shevy>
you could even use "already existing names", like: module Test; class Class; end; end; Test::Class.new # => #<Test::Class:0xb69f3510>
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<shevy>
becom33 yeah, if you remember to properly quote your strings you can ;)
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<becom33>
shevy, yea my ba
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<becom33>
bad
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<shevy>
becom33 you still spending time with this metasploit thing? or you moved to other projects
<becom33>
I know I can't do this coz I tried it didnt work I was thinking how can I do this
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<becom33>
shevy, moved but that one still working when I get free time :D
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<becom33>
puts "error"; exit() if (error_variable_is_true) and (another_error_variable_is_true)
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<shevy>
hmm
<shevy>
you could also use raise instead
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<MrZYX>
the if also affects only the last statement
<MrZYX>
the puts would always be executed
<shevy>
raise 'becom33 to earth, becom33 to earth, we encountered a fatal exit!' if error_variable and another_error_variable
<shevy>
oops... a fatal error
<becom33>
lol
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<UnbertKant>
Hey there!
<shevy>
becom33 also, no need to use exit(), you could just use exit
<becom33>
MrZYX, I want both to execute only if those variables are true
<shevy>
and you dont need to put the variables in ()
<shevy>
your code could translate to:
<becom33>
ok
<shevy>
exit if true and true
<UnbertKant>
I want to write a simple script and I wonder why a method can't access the variable that I defined directly in the script. Is that even possible?
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<whitequark>
UnbertKant: >> a = 1; def b; a; end; b
<shevy>
UnbertKant depends on the variable and how you defined it
<whitequark>
for example
<UnbertKant>
(I don't have any classes in the script just some methods at the top, then some variables, then some calls to the methods which want to read the variables but can't )
<shevy>
UnbertKant if you would show the part of your code that confuses you, it would help us!
<shevy>
but whitequark showed one example
<MrZYX>
UnbertKant: you need to define the variable in the global space before using it in the method definition
<UnbertKant>
It's basically like this:
<UnbertKant>
def bla
<UnbertKant>
puts a
<UnbertKant>
a = "something"
<UnbertKant>
bla
<UnbertKant>
end
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<shevy>
eh
<shevy>
a inside the method is different from a outside
<becom33>
UnbertKant,
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<becom33>
u can
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<becom33>
def bla inp
<becom33>
puts inp
<becom33>
end
<becom33>
bla("somthing")
<shevy>
UnbertKant change "a" to "@a" and try again
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<becom33>
^ or can do that
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<UnbertKant>
I can't pass it as a parameter, since that method is called by other methods which are called by other methods etc.
<UnbertKant>
I'll try @, thanks.
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<shevy>
UnbertKant yeah that makes sense, though you could often use a default value then
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<UnbertKant>
But what's the reason why ruby doesn't look in the outer scope if the variable isn't defined in the method?
<shevy>
like becom33's example, you could do this:
<shevy>
def bla(input = @a)
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<shevy>
puts input
<shevy>
end
<shevy>
bla()
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<shevy>
oops, ignore the wrong indent :D
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<shevy>
UnbertKant good question
<shevy>
UnbertKant it might be that such variables would permanently leak around in a huge project or huge environment
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<shevy>
UnbertKant imagine if you require another project which has 10000000000 of these variables already defined
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<shevy>
all your methods would be tainted if they would look at these, at least in the "main namespace"
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<shevy>
(and if they use local variable names)
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<shevy>
test
<Hanmac>
failed :P
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<sheenobu>
I just need some json Rational help. JSON.parse(JSON.dump({ :x => Rational(4,1) })) fails on 1.9.3p363 and rails 3.2.12
<aedorn>
Hmmm... I see much Chakra Linux in my future as Gentoo is failing me. =(
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<sheenobu>
do I need to monkey-patch Rational to get to_json to work or just upgrade my JSON libs?
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<shevy>
Hanmac sometimes I am disconnected from IRC and dont know when
<shevy>
aedorn yay! deservedly so for you using python! \o/
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<UnbertKant>
Hm... now the variable gets found, but its content is nil... but I'm sure it isnt? def bla; puts @a; end; a= "a"; puts a; bla first puts "a" and than crashes because @a is nil
<shevy>
UnbertKant you dont use @a
<shevy>
@a is not like a
<shevy>
you assign to a:
<shevy>
a = "a"
<aedorn>
I only used it once!
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<shevy>
not to @a
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<shevy>
UnbertKant a and @a are two different things, remember, you must try to think how the ruby parser "sees" your code
<UnbertKant>
So I have to use @ everywhere when it should be a variable that is the same in and outside of methods?
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<shevy>
UnbertKant as I explained to you before, you can not use local variables leaking into methods
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<shevy>
now you first need to accept that fact
<UnbertKant>
Okay, so I don't understand how the parser sees the code. I thought usind @ in a method means "look for that variable outside of the method"
<shevy>
before you did so, we cant continue
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<shevy>
your brain must first accept that you can not use local variable names from the outside
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* shevy
waits patiently.
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<UnbertKant>
I'll read up on @ first, brb.
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<shevy>
hehehe
<shevy>
UnbertKant @ is an instance variable, you can use that in your class, and in methods too
<shevy>
UnbertKant you can use instance variables almost like local variables too. you can even remove them
<shevy>
UnbertKant, like remove_instance_variable(:@foo)
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<UnbertKant>
Okay. So when I don't have a class, do I still add an initialize method to the script, where I set the @variables or does initialize only work for classes?
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<UnbertKant>
Wait, that shouldn't be necessary, since the assignment code gets run in the script? (Unlike if it were a class, where it wouldn't be executed?)
<MrZYX>
write "puts self.class" into a file test.rb and run it with ruby test.rb ;)
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<UnbertKant>
So in this case it's possible to write code into a class, but outside of a method and it gets executed. But normally if I write a class I can't just write the code anywhere, it has to go into initialize to be executed?
<MrZYX>
you could write it anywhere too
<MrZYX>
it would be executed when the file is loaded
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<MrZYX>
if you write it into initialize it gets executed if #new is called on that class
<MrZYX>
because you're inside the main object already
<MrZYX>
try puts self.inspect
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<MrZYX>
everything in ruby is a object, even the toplevel context
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<UnbertKant>
Why is the code in the stack overflow example valid, if the code that sets the variable isn't actually executed?
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<MrZYX>
the code in the question or..?
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<sheenobu>
nothing? eh -_-
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<slopjong>
when using a form input field with the name contact_form[custom_field_values][3], how do I access the value of it? I've tried params[:contact_form][:custom_field_values][3] but this seems wrong
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<UnbertKant>
How do I split a string only on the first match of a regex?
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<solidoodlesuppor>
undefined method plugins?
<UnbertKant>
For example "Truth = 1+1 = 2" should turn into ["Truth","1+1 = 2"]
<shevy>
UnbertKant give example input, and desired output, of your string.
<solidoodlesuppor>
what up with that? That's almost verbatim what you are doing
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<shevy>
hmm
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<UnbertKant>
never mind
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<heftig>
UnbertKant: split(/\s*=\s*/, 2)
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<chesterjd>
Hi everyone. When I define a class, I can write code inside the class, alongside methods and things. Is the inside of a class declaration like a method that gets called when the class is defined?
<MrZYX>
no it gets executed as the class is parsed
<whitequark>
chesterjd: it's just code which gets executed
<whitequark>
MrZYX: it isn't
<shevy>
oh cool
<whitequark>
the code is first parsed in its entirety, then checked for errors, and only then executed
<havenwood>
wormwood: Depends on what you're doing. StringIO, TempFile, etc. What are you using it for?
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<wormwood>
havenwood: an example would be passing javascript code to jslint like system("jslint -stdin #{@code}")
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<havenwood>
wormwood: Where does the file-esque object come in to play?
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<wormwood>
havenwood: because of how the shell handles strings, it would be better suited to run the check from an actual file
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<wormwood>
havenwood: so I just was looking for a way to make things go faster on that end, but there probably isn't a short to writing file, reading file, and deleteing it
<cool>
I am trying to parse html with nokogiri using .css('tr td font') but it fetches everything which is not what I want. anyway I could get just the name, grand total or other individual data present on the page? http://jsfiddle.net/gAcjy/embedded/result/
<banisterfiend>
cool: cool nickname
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<cool>
banisterfiend: thanks
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<shevy>
MrZYX yeah but begin/rescue is another layer, I'd rather love to have code that (can?) never breaks :(
<shevy>
mercwithamouth see the good thing that way, you'll never be bored, you always can extend your projects
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<MrZYX>
shevy: echo "#!/usr/bin/ruby\nbegin\nrequire ARGV[1]\nrescue;end\n" > /usr/local/bin/ruby or something like that :P
<Hanmac>
shevy yeah, like the shampoo spot ... lightning, blackout, the code still runs :D
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<Hanmac>
MrZYX the shebang is wrong ... use env
<MrZYX>
or alias ruby="ruby $@ 2> /dev/null"
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<MrZYX>
hm that wouldn't go recursive Hanmac?
<MrZYX>
given /usr/local/bin is in the $PATH
<Hanmac>
this is the good shebang "!/usr/bin/env ruby"
<shevy>
shampoo spot??? what are you watching Hanmac ... :P
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<Hanmac>
shevy it was advertisnig
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<Hanmac>
shevy google "DreiwetterTaft" :P
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<mercwithamouth>
shevy: yeah very true. actually it has worked out in my favor. after getting annoyed i printed out all of my ideas and circled/crossed out things that made sense and things that should be trashed. that gave me an ultimate 'cool' project and i can copy a lot of code over from others
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<mercwithamouth>
ahh while there's a few knowledgeable few people here. does anyone here use rspec 2? i've tried testing on different occasions but i've never gotten a hang of it
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<havenwood>
mercwithamouth: Lots of people use RSpec. Personally I like Minitest::Spec.
<Hanmac>
Caelum look for File#open and the block form
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<MrZYX>
also IO#lines
<onewheelskyward>
Caelum you seem to have written a function as a class. Have a whack at breaking that apart into components.
<MrZYX>
all_restaurants = all_restaurants.uniq should be all_restaurants.uniq!
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<MrZYX>
"if ! menus[i][r] then" should be "unless menus[i][r]"
<lectrick>
Is it even possible to design an ImmutableHash class?
<Hanmac>
lectrick what should it do?
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<lectrick>
Hanmac: Some kind of autodup if it's assigned to a new variable, I guess :O
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<thecodethinker>
Is ruby + rails good for game development? with something like webgl?
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<shevy>
thecodethinker why do you mention rails + webgl ???
<lectrick>
lol
<julian-delphiki>
thats a #rubyonrails question
<lectrick>
thecodethinker: it's good, if you like ruby. and/or rails I guess
<shevy>
thecodethinker there are a few libraries you could try, gosu and gamebox with ruby for instance. but be aware, designing a game is not easy, it takes a lot of work
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<thecodethinker>
idk im new to ruby :'(
<lectrick>
first priority: do you like the language? second priority: can the language do the job?
<shevy>
thecodethinker I'd recommend you to just stick around using ruby for a while, without diving into anything too specific
<eval-in>
breakingthings => /tmp/execpad-814c576876d3/source-814c576876d3:2:in `<main>': undefined local variable or method `a' for main:Object (NameError) (http://eval.in/12260)
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<thecodethinker>
So ruby is just for serverside stuff then?
<breakingthings>
thecodethinker: everything is for serverside stuff
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<breakingthings>
javascript is the -only- exception
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<breakingthings>
it is the -only- way to perform in-browser, clientside logic.
<shevy>
thecodethinker I wanna knock you out man
<shevy>
use ruby for everything!
<breakingthings>
brb using ruby to fly rawkets for nasa
<breakingthings>
no, I don't mean coding
<shevy>
you could!
<breakingthings>
I mean like, printing out ruby and using it as a steering wheel.
<thecodethinker>
shevy: :'( don't hate. I'm new to internetz developmentz stuff.. I've been all C languages for all my programmer life
<breakingthings>
thecodethinker: there's going to be a LOT to learn for you to get into web development, rails is not really going to make that any easier.
<breakingthings>
probably harder.
<shevy>
thecodethinker ok so you use C, we can use ruby inline to also use ruby with C directly
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<whitequark>
thecodethinker: don't listen shevy too much
<thecodethinker>
whitequark: I am starting to get that -_-
<havenwood>
shevy: Ruby is for telephony, 3d, robots, whatever - but like all languages other than JS, it doesn't run in a web browser.
<whitequark>
thecodethinker: he's pretty harmful but not really sane
<shevy>
thecodethinker don't listen to whitequark, he is fat
<whitequark>
er, harmless
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<thecodethinker>
shevy: what
<thecodethinker>
shevy: is wrong
<breakingthings>
>To package your binaries into a gem, use hoe's INLINE
<shevy>
hahaha :D
<thecodethinker>
shevy: with being
<thecodethinker>
shevy: FAAAT!!!
<breakingthings>
Don't use hoes inline, man
<shevy>
lol
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<shevy>
no seriously
<thecodethinker>
(sigh) to coffescript -_- wish me luck
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<shevy>
thecodethinker look at that example on that page
<shevy>
builder.c "
<shevy>
long factorial(int max) {
<shevy>
^^^ there! C code in ruby
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<shevy>
hmm FFI is perhaps even cooler than that
<thecodethinker>
shevy: but I need to be able to make games. It's what I do. If I have some serverside stuff I'll probably use ruby. perl is .... odd and node.js is... js
<whitequark>
-_- shevy, it uses ffi
<shevy>
ah?
<shevy>
man, that's cheating
<swarley>
I think I'm going to be waiting for a while for this to finish
<markalanevans>
If i have that, and then in another class i do : include Genius
<markalanevans>
How from methods inside the Class do i refer to the methods that are included in my module.
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<markalanevans>
hmm. must be friday?
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<apeiros_>
markalanevans: you just call them
<markalanevans>
i don't need to refer to this?
<markalanevans>
or sefl
<markalanevans>
self
<apeiros_>
self is implicit
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<MrZYX>
Caelum: okay here's what I would end up with by refactoring your first program http://paste.mrzyx.de/show.php?id=1361, maybe it can give you some take aways :)
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<icy`>
include Genius::ClassMethods
<icy`>
then item_shipping_price(...)
<apeiros_>
icy`: read the full thing
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<apeiros_>
he does NOT need to include Genius::ClassMethods
<icy`>
ah right
<apeiros_>
a) because that'd be wrong (extend, not include) and b) because Genius already does that
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<markalanevans>
So Perhaps i'm a tad confused. I'm just learning Sinatra. And in my main sinatra file
<markalanevans>
class App < Sinatra::Base
<markalanevans>
i do include Genius
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<apeiros_>
class Foo; include Genius; def self.foo; some_method_from_genius_class_methods; end; def bar; some_method_from_genius_instance_methods; end; end
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<markalanevans>
Then in the get '/' section i try to use method_from_my_module
<markalanevans>
But i'm getting undefined issues.
<apeiros_>
from which module. you have two…
<markalanevans>
apeiros_: your refering to my paste?
<apeiros_>
also I'm not sure in what context sinatra runs the block passed to `get`
<markalanevans>
In this case the one in ClassMethods
<apeiros_>
markalanevans: yes
<apeiros_>
markalanevans: I *assume* that the block passed to get is instance_eval'ed
<apeiros_>
then you'd have to use self.class.method_name in that block
<markalanevans>
ok.
<markalanevans>
let me try that
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<apeiros_>
but you're probably not supposed to use the class methods there anyway
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<apeiros_>
but I haven't played with sinatra
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<onewheelskyward>
Sinatra is quite fun.
<markalanevans>
Woot.
<markalanevans>
apeiros_: thats worked.
<markalanevans>
So apeiros_ why is that again
<apeiros_>
markalanevans: consider the `get` stuff to be instance methods then
<markalanevans>
you said i "assume" that the block paassed to get is instance_evaled
<apeiros_>
because the methods in ClassMethods become class methods (hence the name)
<apeiros_>
why I assume? because I don't know. and you can't tell just from the method signature.
<markalanevans>
apeiros_: so if i wanted to just use the method without the .class they should be in the instanec module?
<markalanevans>
*instance
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<apeiros_>
yes
<apeiros_>
the methods in ClassMethods can be used in the class body
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<apeiros_>
useful to define methods like sinatra's "get" method
<markalanevans>
Ok. I'm going to test that. So if your assumption is correct, i could just use the method name without self as well?
<apeiros_>
or ruby's "attr_accessor"
<Caelum>
MrZYX: what is inject(&:+), is that kind of like how you do a reduce in haskell?
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<apeiros_>
markalanevans: any method which you can call with self, you can call without. only exceptions: keywords and methods ending with '='
<MrZYX>
Caelum: don't know haskell but it's the compensation for the lack of a sum function
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<apeiros_>
(self.class e.g., because class is a keyword)
<apeiros_>
MrZYX, Caelum: inject(:+) - faster than inject(&:+)
<markalanevans>
apeiros_: when defining a class is it clear to use self. just for clarity?
<apeiros_>
markalanevans: *defining* a method is different from calling
<markalanevans>
* ment calling
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<apeiros_>
`def self.foo` defines a class method. `def foo` defines an instance method
<MrZYX>
apeiros_: thanks
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<apeiros_>
markalanevans: I never use self for method calls. I find that redundant, even annoying.
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<markalanevans>
ok.
<lewix>
Caelum: reduce and inject are interchangeable
<markalanevans>
Just trying to learn the best pracitces etc.
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<apeiros_>
markalanevans: sure. asking is a good method for that ;-)
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<markalanevans>
Cool. Thanks apeiros_
<apeiros_>
also a good method: paste (reproducable!) code and ask for help refactoring
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<lewix>
apeiros_: it's pretty
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<markalanevans>
ok
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<shevy>
markalanevans a good practice is to try to achieve what you really need, in as few characters as required
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<markalanevans>
shevy: gotcha. Will keep that in mind
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<shevy>
Caelum you can either do something like array.map {|x| x.chomp } or this here array.map(&:chomp)
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<shevy>
anyone of you guys using __END__ a lot?
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<apeiros_>
during development? all the time
<shevy>
cool
<apeiros_>
production to actually read data? rarely ever
<shevy>
what kind of data do you happen to store after __END__ ?
<Caelum>
shevy: I see, thank you
<apeiros_>
old code I'm rewriting or refactoring
<shevy>
well, right now I am thinking of storing some configuration-like values in a .rb file
<apeiros_>
i.e., I abuse it as comment :)
<shevy>
hehe
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<Caelum>
MrZYX: thank you very much for all your help, I've learned a great deal about ruby. Still need to read a book, but now I won't be lost when I need to read some code
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<MrZYX>
you're welcome :)
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<lewix>
Caelum: what material you used to learn
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<Caelum>
lewix: for this thing? just some quick google searches
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<jasonthesensei>
hi everyone Im new to ruby ran into problem i have rubygems instlled but when i'm in irb and i require 'rubygems' the response is false ny ide how to fix this
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<shevy>
jasonthesensei, what ruby version
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<shevy>
since 1.9 and higher, rubygems should be integrated so you no longer have to require it
<jasonthesensei>
1.9.3p0
<shevy>
and a return value of false here often indicates that it was already required
<Hanmac>
jasonthesensei ... false means that rubygems is allready required
<jasonthesensei>
thnks a lot
<shevy>
example:
<shevy>
require 'mathn' # => true
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<shevy>
require 'mathn' # => false
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<jasonthesensei>
yeah i had done require 'money' # => true
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<apeiros_>
with ruby 1.9, rubygems is by default always loaded
<Caelum>
what's the difference between array.all do |i| and array.all? do |i| do you use all? when you want to return a boolean?
<jasonthesensei>
Thank you so i just require my gem in irb
<apeiros_>
a failing require will raise LoadError
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<shevy>
Caelum where do you have this example
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<apeiros_>
Caelum: array.all does not exist
<shevy>
Caelum "all" is another method than "all?" do you know that? unless you would alias one to the other
<apeiros_>
Caelum: are you looking at rails maybe? i.e. ActiveRecord::Base::all ?
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<Caelum>
apeiros_: I see, thank you
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<Caelum>
apeiros_: the method? methods are a bit confusing if you're not used to them
<apeiros_>
Caelum: with `all?`, the ? is just part of the method name
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<apeiros_>
and yes, they usually return true/false
<apeiros_>
Caelum: why should they be confusing? it's just a name. same with methods ending with !
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<Caelum>
apeiros_: now that you explain that it makes more sense, but without knowing that it looks like syntax
<apeiros_>
ok
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<apeiros_>
I can imagine that it is confusing without knowing that it's just part of the name
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<the_jeebster>
I'm curious to know…do any of you guys code in an outdoor environment?
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<Hanmac>
the outdoor is a fake :P
<the_jeebster>
:(
<the_jeebster>
all I'm saying is give me a laptop, screen-protector, and headphones and I can be just as productive. I feel better with natural stimulation anyways