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<Es0teric>
when using case/when, is it possible to compare two variables on a "when" block?
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<Es0teric>
like.. case var1 when "val1" && var2 == "something" puts "var1 and var2 match"
<mackwic>
pandawarrior, french programmation contest, the records are open
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<pandawarrior>
oh wow, this is the major leagues...
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<mackwic>
ah, and it's in french only
<mackwic>
:/
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<Es0teric>
when using case/when, is it possible to compare two variables on a "when" block? like.. case var1 when "val1" && var2 == "something" puts "var1 and var2 match"
<pandawarrior>
chrome translates each page on the fly
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<pandawarrior>
but it's still pretty high level
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<sam113101>
is there a goto in ruby?
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<Xeago>
samphippen: only under certain compilation flags
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<Xeago>
that flag also enables some other modes
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<havenwood>
sam113101: GOTO is an anti-pattern, Ruby does flow control in better ways.
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<aedornm>
I like unraveling very deeply nested hashes by {}.to_s.slice /some impossible pattern/
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<mackwic>
time to sleep, thanks again for the help !
<pewter_tao>
if I have def somefunc() end, then how do I call somethingelse(zero) which is inside of somefunc() ... from another file?
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<pewter_tao>
moeSizlak: I'll quote fightclub if you help :)
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<nightfly>
moeSizlak: gasoline and styrofoam are pretty effective too
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<moeSizlak>
One could make all sorts of explosives using ordinary household chemicals. If one was so inclined.
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<pewter_tao>
ok guys, how do I access this
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<moeSizlak>
your question is not verbose enough
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<moeSizlak>
It could be worse. A woman could cut off your penis while you're sleeping and toss it out the window of a moving car.
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<aedornm>
oooh, Rails 4 beta. I shall go forth and make a beta Rails 4 beta application that will be about beta fish.
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<Spooner>
tyebud, Downgrade your Bundler version to 1.2.something. 1.3 is compatible with Ruby 2.0, but seems to have messed up 1.9 ;)
<tyebud>
ugh, really? WIll do. Thanks for the response!
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<Spooner>
It is because 2.0 uses UTF as a default in every file, so I assume now so does Bundler 1.3.0 (by setting it manually), but it might be messing up with other gems that expect regular ASCII.
<tyebud>
Is there a way to see what versions are available on rubygems?
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<Spooner>
Admittedly, I am only guessing, but lots of people have had unicode errors since 2.0 came out in 1.9 ;)
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<tyebud>
Let's see what happen
<tyebud>
s
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<tyebud>
Alright, which bundle produces a version of 1.2.5 but I'm still getting the error
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<Spooner>
tyebud, Hmm. I know 1.2.1 worked for me before I upgraded, though I guess it could be nothing to do with bundler and be another gem or, well, anything :$
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<tyebud>
Shity
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* Spooner
shrugs.
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<tyebud>
Thanks a ton for the help
<tyebud>
I'll let you know if I come up with anything else.
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<moeSizlak>
The gehoxigogan is framed up by the ramistam.
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<bnagy>
afternoon rubynauts
<bnagy>
what's a decent style for adding fuctionality via modules when the container class has some private methods you'd like to be able to see?
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<bnagy>
basically I have a thing that has some of its own basic public API and basic private utility methods, and I am trying to move less-core stuff out of that class and into a few modules
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<ninjanoise>
rake question if anyone is around, I'm not using rails just straight up ruby, how do I check if a postgres table exists in a rakefile?
<ninjanoise>
conn.prepare('query_statement', 'select count(*) from table where id = $1')
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<ninjanoise>
stuff like that, I'm fairly new to ruby been messing with it for about 3-4 days now
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<genxweb>
I have a pretty noob question. I have a socket that conencts and then reads the input from the website. I want to search that info for a certain line and if I find it do x. I am pretty new to this and I think my issue I dont know what I should be searching for to read
<brum>
ninjanoise: maybe a begin, rescue? sorry don't know too much ab out it
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<rickmasta>
I currently have something like this: thisweekmondaytime = page.search('/html/body/div/table/tr[2]/td/table/tr[3]/td[2]/pre').map(&:text)
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<ninjanoise>
task :second => :first
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<ninjanoise>
That means that rake second also runs the first task right?
<rickmasta>
But that gives me an array with one thing in it, I just want that one thing as a string. Though, if I remove the .map(&:text) I get the <pre></pre>.
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<bnagy>
rickmasta: map will always return an array. You could add .first to the end?
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<bnagy>
although frankly if you know it only has one match then just do page.search(blah).first.text
<rickmasta>
Just adding .to_s does nothing. Can I do .map(:&text).first.to_s?
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<brum>
yeah try it
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<rickmasta>
Oh nice, it works.
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<brum>
ninjanoise: nice work with the sinatra hn app, another way to make it readable besides the comments would be use more methods!
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<ninjanoise>
@brum thanks, and yeah I'll try and break it out into smaller chunks now that it works :)
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<ninjanoise>
@brum thanks for the help I got a rake file working too!
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<rickmasta>
No, I mean. There are so many db systems out there, and everyone uses different ones. How do I know whether mongo, sqlite, pg, myslq, redis and any other database will be the best for my project?
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<ninjanoise>
ah
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<ninjanoise>
close your eyes point to the screen?
<rickmasta>
haha
<ninjanoise>
I'm not sure on that one..
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<ninjanoise>
postgres seems to be good for most things.. but I'm sure that's one of the "holy war" topics if you bring it up
<ninjanoise>
which db is like which language to use for a project
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<bnagy>
not really
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<brum>
do you have millions of users
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<bnagy>
if you don't have highly relational data, pick a nosql style, they're easier to use
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<bnagy>
but they're not going to perform well under certain workloads
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<brum>
unless you're doing something important, just pick the one that looks like the most fun
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<bnagy>
I happen to, personally, like the oklahoma mixer API a lot, so I still use that even though it hasn't been touched for ages and tokyocabinet is supposedly deprecated
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<bnagy>
if you need the DB to be accessed concurrently that will shape your choices, as well
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<brum>
ルビ
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<brum>
日本ですか？
<brum>
日本語ですか？！
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<brum>
私は日本語花ません。
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<kanja>
I'm having some trouble installing rmagick - I installed the gem and now I'm getting "libMagickCore.so.5: cannot open shared object file: <path>", but the path exits - is there a step to installing this gem I'm missing?
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<kanja>
I can require it in IRB - why can't rails see it?
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<ryanf>
kanja: I think rmagick isn't compatible with the newest version of imagemagick
<ryanf>
you may need to install a slightly older version
<ryanf>
unless they updated it? I haven't checked
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<kanja>
oy
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<kanja>
I think I got it via symlinking
<kanja>
ug
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<rickmasta>
I have never used any db without Rails. haha
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<yxhuvud>
seems fine, assuming that weird syntax marking isn't how it is really parsed.
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<blf>
yxhuvud: Haven't tested yet, but most languages support %= so I figured I'd go with it until it breaks. In any event, thanks for the feedback :)
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<yxhuvud>
Try, and you'll find out.
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<cads>
hey guys, is there anything in ruby that runs like stack exchange?
<jarred>
hi all
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<cads>
hey jarred
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<jarred>
I haven't worked much with methods that take a block as an argument. I'm trying to define a method that gets passed both a string and a block. I defined it like, "def match(matcher, &block)", but I get "syntax error, unexpected '{', expecting end-of-input" when I call the method (not the block). Here's an example: https://gist.github.com/Jarred-Sumner/fb442a3f0905afbb81d2. What am I doing wrong/misunderstanding?
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<bnagy>
jarred: I think you probably just need braces for your param
<bnagy>
match( 'bagel' ) { ...
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<blf>
jarred: Yes, you just need parentheses. Braces bind tightly, so they are currently binding to 'bagel' as if it were the invocation. you could use do/end if you don't want to use parentheses.
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<jarred>
blf: Okay
<jarred>
That makes sense and it worked. Thanks for your guys' help
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<blf>
Sure thing :)
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<blf>
Anyone ever overridden the each_with_index method of the Enumerble Module? I'm thinking about returning an array of values as the object's index.
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<akam-it>
hello
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<ryanf>
blf: why? have you considered just defining your own method with a different name that does that?
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<akam-it>
how to operate with hex codes? i try to read binary file, but i get codes like, for example \x80 or \xF3 or even \u0001. but i need 0x80 or 0xF3 or 0x01.
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<ryanf>
akam-it: it sounds like you want a combination of unpack and to_i(16)
<ryanf>
unpack to turn a binary string into an array of numbers, and then to_i(16) to format them as hex
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<akam-it>
ryanf: like this? f.read(1).unpack('H*')[0].to_i(16)
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<ryanf>
hmm, I think you might want 'C' instead
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<ryanf>
oops, I meant to_s also
<ryanf>
>> p "\x80\x81\x82\x83\x84\x85\x86\x87".unpack('C*').map { |b| '0x' + b.to_s(16) }
<mtfk__>
and explain me why for 0.02 and 0.08 I have wrong results?
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<mtfk__>
is any know bug related with that ?
<hoelzro>
it's not a bug
<mtfk__>
or I miss something
<hoelzro>
it's just a strange behavior associated with how a computer stores floating point numbers
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<mtfk__>
so what to do to make sure that the result will be correct?
<hoelzro>
well, you need to ask yourself how important being 100% correct is first
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<hoelzro>
for most things, floating point numbers such as these are acceptably accurate
<hoelzro>
and they're fast
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<hoelzro>
for some things (ex. banking), you're willing to sacrifice performance for accuracy
<mtfk__>
in my case it is very important
<hoelzro>
what are you doing, if you don't mind my asking?
<mtfk__>
measure a weight of some small items and store in database
<hoelzro>
if it's *really* important, you should use BigDecimal
<hoelzro>
but for that purpose, floats are probably good enough
<mtfk__>
and 0.1 is significant
<bnagy>
the results aren't out by 0.1
<bnagy>
not even close
<mtfk__>
sorry 0.01 is significant
elaptics`away is now known as elaptics
<mtfk__>
but I see your point
<bnagy>
they're probably orders of magnitude more precise than your measurements, tbh
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<blf>
heh. I spelled spatial... spacial :)
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<pong42>
I have a directory with sub-directories that are timestamps. I want to find a DVD iso file in the latest directory. Can it be written more elegantly than this?
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<pong42>
build = Dir.entries(isodir).sort.reverse.find do
<Apathetic>
oh maybe it wasn't just inserted on a new line
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<Hanmac>
PS: if you want to use the hypotenuse of an rectangled triangle ... (3² + 4² = 5²) then this line is better because its faster: Math.hypot(3,4) #=> 5.0
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<heftig>
Hanmac: yould be nice if hypot would allow a variable amount of arguments
<heftig>
for a more generic inner product
<heftig>
er, dot product
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<Hanmac>
why not? Math.hypot(a,b) works too
<heftig>
Hanmac: huh?
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<heftig>
I was lamenting the fact there's no equivalent to a Math.hypot(a,b,c) to get the length of a three-dimensional vector
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<Hanmac>
oh okay, (yeah that would be a bit more complicated)
<Hanmac>
you can still make a feature request
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<bnagy>
got a base class which has a very basic API, and I want to add modules with extra methods, but I would like those modules be able to use private methods in the core clas
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<hordo>
how can I start a virtual machine from a ruby script?
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<Apathetic>
hordo, vagrant
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<banisterfiend>
bnagy: they can do that (kind of quirk about ruby)
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<drale2k>
When i try to install ruby 2.0.0 with RVM, i get an error because of openssl which is "Error running 'make'"
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<bnagy>
banisterfiend: uh, they can? how?
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<bnagy>
and, is it likely to lead to pretty code :)
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<hordo_>
i want to take screenshots but only at some part of the page using watir-webdriver
<hordo_>
can anyone help me with this?
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<dmonjo>
halfdan-: no other?
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<csmrfx>
hordo_: you have pastie?
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<shevy>
got dope?
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<csmrfx>
naw, aint a plumber
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<Spooner_>
hordo_, I've used watir
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<Spooner_>
But not much.
<hordo_>
i need to save parts of a webpage as .png
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<hordo_>
not the entire page just parts of it
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<Spooner_>
You mean take a screenshot or save images?
<hordo_>
can I do that?
<hordo_>
yep
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<Spooner_>
"yep" isn't a valid reply to a question with "or" in it ;)
<hordo_>
take screenshot
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<Spooner_>
Saving images should be easy. Screenshot I haven't a clue if that is possible, I'm afraid.
<hordo_>
i'm using b=Watir::Browser.new
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<hordo_>
b.screenshot.save('file.png')
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<hordo_>
but this saves the whole page
<Spooner_>
Oh, I see.
<hordo_>
I just need let's say 10x10 px of the page to be saved
<Spooner_>
You could reload the image and edit it with something.
<hordo_>
i can but i rather not do that
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<Spooner_>
I don't mean manually.
<hordo_>
if there is a way to do this in watir
<hordo_>
i know
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<hordo_>
i can do that in ruby
<hordo_>
but it takes time
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<Spooner_>
You mean processing time or tiem to implement.
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<csmrfx>
I think webdriver takes a screenshot and that is it
<hordo_>
processing
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<Spooner_>
Nah, it wouldn't if you did it sensibly.
<TomJ>
Using pry, is there a way to source a file and have it executed in the current pry session? Basically like "source file.sh" in the shell? I can't see anything in the docs. on the command line it has -e for exec, but I want to be able to run a script while already in a pry session, and have it execute as if I'd typed those commands (so that commands like 'reload!' work, when running pry as rails console)
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<Spooner_>
TomJ, You can just use "load 'file.rb'"
<csmrfx>
and dont use processing -- use rubymagick
<csmrfx>
Spooner_: so, what are the better options?
<shevy>
:D
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<Spooner_>
I've used Devil before on windows, where installing Imagemagick is a pain (and Devil comes with everything in the c-extension).
<Spooner_>
Everything else there is just a different API for Imagemagick though. Shame there isn't something better really.
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<csmrfx>
Well, I could always coax Image/RubyMagick to do my bidding
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<halfdan->
dmonjo: no idea
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<jlebrech>
what's the shorthand for 'a = b.foo unless b.nil? else nil'?
<shevy>
hmm
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<shevy>
is there?
<shevy>
perhaps ||=
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<shevy>
your nil worries me
<jlebrech>
"a ||= b" would assign a to b is a is nil
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<jlebrech>
just change it to "" in your mind
<apeiros_>
a = b && b.foo
<jlebrech>
ahh
* apeiros_
still wishes nobu had managed to get .? syntax through: a = b.?foo
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<jlebrech>
apeiros_, i see there, is b is nil then use that as the value
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<Spooner_>
apeiros_, There is a gem that does it, but it is nearly as verbose (a = b.andand.foo) unless you are chaining several methods.
<apeiros_>
Spooner_: it's also not syntax, hence doesn't benefit from any shortcutting.
<Spooner_>
shortcutting?
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<apeiros_>
a chain can be halted the moment a nil is introduced
<apeiros_>
andand will still run the whole chain. even if on possibly cheaper methods than the one on non-nil values
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<Spooner_>
It will not need to run them all after the nil, but will have to go through them all, but that is just method calls (and fake method calls).
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<apeiros_>
that's pretty much what I said with "will still run the whole chain"
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<Spooner_>
Well, yes, but I read it as having to run all the potentially expensive methods in the chain.
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<apeiros_>
method_missing has costs of its own. any even a regular empty method is more expensive than no method call at all.
<apeiros_>
-> syntax would be nice
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<apeiros_>
also arguments to the methods in the chain will still be evaluated (those can be expensive too)
<Spooner_>
Yeah, but I feel the ? prefix would be confusing since we already use a ? postfix.
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<apeiros_>
well, my suggestion was ->, but since 1.9's ->{} lambda syntax, that'd be confusing too.
<Spooner_>
Mmm. b$foo$bar ?
<workmad3>
Spooner_: looks good to me!
<kalib>
Hello guys. I'm new with ruby language. I got a doubt. I have this peace of code, for example: "number = gets.chomp" .. On the next line I wanna use something like "puts The new number is ..." and I wanna give that number + 1. How would be the correct way?
<workmad3>
Spooner_: with that syntax we could abuse it and get R running natively in ruby ;)
<Spooner_>
workmad3, I got the idea from Haskell ;)
<apeiros_>
kalib: you'd have to convert the string to an integer
<Spooner_>
Though I suppose it is different meaning there.
<apeiros_>
kalib: you can do that with String#to_i (instance method 'to_i' of class 'String'), or Kernel#Integer
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<apeiros_>
Kernel#Integer looks like a global function, i.e. you call it as `Integer("12")` # => 12
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<kalib>
apeiros_, I tried to use: "puts 'Wow, the new number is ' + number.to_i += 1 + '.'"
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<kalib>
but got an error:
<kalib>
misturando.rb:8:in `<main>': undefined method `to_' for "12":String (NoMethodError)
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<tobiasvl>
to_ ?
<Spooner_>
puts "Wow, the new number is #{number.to_i + 1}."
<kalib>
ops.. sorry
<kalib>
misturando.rb:8:in `+': String can't be coerced into Fixnum (TypeError)
<kalib>
from misturando.rb:8:in `<main>'
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<kalib>
let me try your tip..
<apeiros_>
kalib: += <-- = means assign
<apeiros_>
and you can only assign to variables
<apeiros_>
number <-- variable
<apeiros_>
number.to_i <-- not a variable, that's an expression, can't assign to that
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<kalib>
ok.
<kalib>
got it.
<apeiros_>
and the other error - String#+ expects the other operand to be a string too
<kalib>
That's what I have now:
<kalib>
puts 'Huuum... acho que o número ' + #{numero.to_i + 1}.
<apeiros_>
so before doing "string" + variable, you have to make sure that variable is a String. .to_s does that on integers.
<Spooner_>
kalib, Copy and paste fail there ;)
<apeiros_>
but Spooner_'s solution with #{} and + is nicer
<Spooner_>
It is called string interpolation. It is used a lot more than + and it automatically does a to_s for you.
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<kalib>
got it. thanks
<workmad3>
apeiros_: rather than it being invalid :)
<apeiros_>
workmad3: I pondered explaining that. But I think that's far over kalib's head right now.
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<kalib>
lol agree
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<workmad3>
apeiros_: well, you know me... pedantic to the core :P
<workmad3>
apeiros_: at least with other people's explanations ;)
<apeiros_>
but maybe I should have mentioned something with regards to foo= methods.
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<apeiros_>
workmad3: well, feel free to explain better to kalib :)
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<kalib>
thank you guys.
<workmad3>
apeiros_: nah, I agree it's probably too much to get into the details... but being aware that such a thing exists helps future explorations IMO :)
<kalib>
I'll read a litle bit more now. back to the manual.
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<shevy>
those who love Readlien API, raise hand now
<shevy>
*Readline
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* jrajav
weakly raises his hand about halfway
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<shevy>
lol
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<shevy>
jrajav you are funny
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<jrajav>
:P
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<iBot_23>
Hi, whats a good way to write html mails in ruby? i tried 4 different gems, including gmail and mail and I only get the HTML code in my mail but the mail clients are not "rendering" but just displaying it. so it is obviosly malformed then.
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<shevy>
hmm ... readline fun
<shevy>
l = Readline.readline "\e[33m> \e[37m\e[33m"; print "\e[0m"; l
<shevy>
anyone knows of a simple library that would eliminate the \e thingies for me?
<wmoxam>
iBot_23: shounds like a mime-type misconfiguration
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<dmonjo>
what is the best method to extrfact a substring from a string using regex?
<Spooner_>
dmonjo, str[/regex/]
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<dmonjo>
grep does not work since not iterator
<dmonjo>
Spooner_: can you give me a small example?
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<dmonjo>
nevermind it works fine thanks
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<iBot_23>
wmoxam: what can I do about it?
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<dmonjo>
how can i know if nokogiri is installed with my 1.9.3?
<dmonjo>
seems it needs a gem install
<Spooner_>
It isn't. It is a gem.
<dmonjo>
ok
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<shevy>
yfeldblum ok
<iBot_23>
as long as I dont use attachments, because then only the image is in the mail not the html anymore :/
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<aedornm>
Not like it would be hard to write, but is there a gem that will keep track of the initial values of an object, so that one may 'reset' it to the original at a given point in time? And by an object, I really mean 50 some variables
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<lupine>
hrm, there's no way to see if an ensure block is being triggered because an exception has been raised, is there?
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<lupine>
(I guess I could set a flag in a rescue => err ; raise err ; ensure ; end sort of way, but that's eviler)
<Spooner_>
lupine, ensure is called whether there is an exception or not.
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<lupine>
I know, hence the question :)
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<Spooner_>
Maybe you want to just use "else"?
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<Spooner_>
If you want something that only happens if an exception isn't raised.
<Spooner_>
Or just put it in the main block.
<aedornm>
You don't need to raise the error again. You can just set the var in the rescue and let it end.
<lupine>
I was looking for a way to execute something if an exception *is* raised, without impeding the exception flow (so no need to raise the captured exception in a rescue block)
<Spooner_>
I see. You've just explained how to do that (re-raise).
<aedornm>
Unless you're wanting the error, then I guess you do. Nevermind.
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<lupine>
aye, it's a transaction, so on exception I need to reset some instance variable and let the exception propagate up the stack. I know how to do that - it just annoys me a bit that that messes with the exception call trace
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<Spooner_>
Right.
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<aedornm>
oh
<aedornm>
just check against $!
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<aedornm>
If there was no exception then $!.nil? would be true
<iBot_23>
can anyone tell me where i can find a code snippet for multipart emails with pony
<iBot_23>
?
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<aedornm>
>> begin; raise "an error"; ensure puts $!; end
<eval-in>
aedornm: Output: "/tmp/execpad-3a45dd1cceae/source-3a45dd1cceae:1:in `<main>': an error (RuntimeError)\nan error\n" (http://eval.in/11198)
<lupine>
presumably, that has special magic under the hood to be thread-safe?
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<aedornm>
hmmmmm.. I'm not sure I'd presume that.
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<aedornm>
I really want to say it keeps them thread-local, though.
<lupine>
mm, I'm having second thoughts on it - just trying to test it
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<teamon>
bundler question: is it possible to have gem "foo", :group => :production and gem "foo", :path => "../foo", :group => :development somehow? this is raising en error (multiple sources)
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<Spooner_>
I use xpath, because I can automatically generate that with my browser, but I think the css is more readable.
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<dmonjo>
you cant generate css with the browser?
<aedornm>
workmad3: fabulous
<aedornm>
lupine: I really think you're safe!
<Spooner_>
No, I mean I can click "copy xpath" when I right-click on something in my browser, which saves me working it out ;)
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<workmad3>
aedornm: when you get the case of it printing out two different $!'s at the same time (because a context switch happened between puts printing out the number and the \n), that's what I take as a good sign :)
<Spooner_>
xpath is more standard, but is ugly as hell. The css search is nicer to read/write manually, but my browser doesn't know about it because I don't think it is a standard.
<dmonjo>
which browser is that
<Spooner_>
I use Chromium.
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<Spooner_>
well, right-click on what I want, then "inspect element" then right-click on the html and "copy xpath"
<dmonjo>
why not chrome ? :)
<aedornm>
workmad3: Yup, just tried it also, and it looks good to me!
<lupine>
I quite like xpath
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<Spooner_>
dmonjo, I'm on Linux. Don't really gain anything from going for the full Chrome.
<dmonjo>
i am using linuxmint with chrome, runs great
<Spooner_>
So does Chromium ;)
<Spooner_>
The only thing missing (that matters) is a built-in PDF viewer.
<aedornm>
Spooner_: and 4 color logo!
<Spooner_>
aedornm, Yeah, I knew there was something else that irked me!
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<aedornm>
I still use Firefox because of Firebug
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<dmonjo>
Spooner_: i am trying to use the xpath inspected by an element from a page: //*[@id="box"]/p/text()
<dmonjo>
doest work with the nokogiri
<aedornm>
oh, and the web developer toolbar. That's pretty handy, too.
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<iBot_23>
aedornm: unfortunately there is no example where they use it for inline images
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<iBot_23>
aedornm: but i will just try if it works
<axhlf>
I'm reinstalling rvm and all that comes with that (and trying out ruby2). When doing 'gem install bundler' with ruby 2.1 I get http://pastie.org/6341859 this error. It complains about not having openssl. How do one install that, in this context? Thankful for any pointers in the right direction :)
<breakingthings>
Ruby 2.1? Are you from the future?
<breakingthings>
also openssl is an issue for many right now
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<Spooner_>
2.0 installed fine for me with rbenv (Ubuntu).
<axhlf>
breakingthings: oh, sorry! It's no time machine, just fat fingers. 2.0
<aedornm>
It's not enough to subclass OpenStruct... one must rewrite it!
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<dmonjo>
is returning nothing
<dmonjo>
even though i inspected the element i want it to return
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<dmonjo>
the inspected element is "and 2 others liked this." in the comments section
<axhlf>
breakingthings: thanks, solving the problem.
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<Spooner_>
dmonjo, The comments are loaded using javascript, which you aren't running when you just download the raw html. Look at watir, which runs an instance of your browser and scrapes from that.
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<dmonjo>
you mean watir will simulate that for me and return the html wit hthe javascript?
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<Spooner_>
It doesn't simulate. It actually opens the page in a real browser, then lets it run the javascript and just gives you a nokogiri doc.
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<dmonjo>
perfect :)
<Spooner_>
You will want watir-webdriver though, since you aren't on Windows.
<dmonjo>
will look into that
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<iBot_23>
aedornm: this gem requires sendmail, i just want to send stuff via gmail
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<dmonjo>
Spooner_: i see you can even fill forms and submit with watir
<dmonjo>
awesome
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<Spooner_>
You can indeed. Mechanise is better for that if you don't need Javascript/Ajax though, since that just emulates the browser rather than running one.
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<Spooner_>
*mechanize even
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<aedornm>
iBot_23: It can use sendmail, but it does not require it
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<dmonjo>
mechanize would be way faster i think
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<dmonjo>
watir would be a bit slow if you run for example like a 100 instance
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<Spooner_>
Mainly it doesn't get in the way by popping up a browser and, obviously, would be less memory intensive if you wanted to run 10 instances of it at once :D
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<Spooner_>
They are both fine though. Not usually in a rush to scrape.
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<Spooner_>
Well, not in the scrapers I've written anyway :D
<dmonjo>
maybe use it to bruteforce a user/pass authentication :D
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<Spooner_>
I earned a whopping $60 last week writing scrapers. Feel free to subcontract :P
<aedornm>
capybara-webkit will also work, and it's a tad bit less intensive than running a WebDriver instance of Firefox
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<iBot_23>
aedornm: I dont see an example with inline images anywhere. I hacked a python version in 10 minutes and will use that now, thank you anyway :)
<Spooner_>
aedornm, Good to know.
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<dmonjo>
wonbat can be used on ajax/jscript?
<dmonjo>
wombat*
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<aedornm>
I really want to do Watir for PhantomJS
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<troulouliou_dev>
hi stupid question i know but i m using gedit as IDE for all ruby tasks , would like to switch to something other ; maybe a terminal one under terminator ; any good ideas , experience here ?
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<bobinator60>
right, and rails/engine.rb would have module rails; class engine ?
<Spooner_>
mcatch, No, those where three options. system("c:\asdf.msi")
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<Spooner_>
Or: output = `c:\asdf`
<bobinator60>
what about rails/caboose.rb ?
<mcatch>
same thing Spooner_ system("c:\asdf.msi") simply returns => nil
<mcatch>
but nothing launches
<Spooner_>
Mmm.
<bobinator60>
wouldn't that also have module rails; class caboose? would these be two separate modules? or one namespace?
<hoelzro>
you probably need msiexec or something?
<bobinator60>
shevy: ^
<shevy>
bobinator60 a module must start with an upcased character
<bobinator60>
ok, well ignore the cas
<bobinator60>
e
<shevy>
I can't, I must pay attention to detail :)
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<shevy>
bobinator60 your class would reside within the module namespace
<bobinator60>
thanks. I have just written it down
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<aedornm>
system("msiexec c:\asdf.msi")
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<shevy>
but you can "include Rails" to include that namespace, into.. I dunno... main... or whatever the name is
<bobinator60>
would rails/engine.rb and rails/caboose.rb be in the same Rails:: namespace?
<shevy>
if you would use this logical directory structure, sure
<Spooner_>
mcatch, #system will just return nil though. The output will go to stdout. Use output = `msiexec c:\asdf.msi` to get the text output.
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<dmonjo>
core_tests.rb should be there after watir is installed on linux? cant find them
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<rafrcruz>
Hello guys
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<rafrcruz>
I really need help to install nmatrix. Someone have some time to try to explain me how to install it in linuxmint? I tryed the tutorials on sciruby.com but it's not working for me :/
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<bobinator60>
shevy: include Modulename ?
<bobinator60>
or include Modulename::classname
<hoelzro>
bobinator60: you can only include modules
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<Spooner_>
You include modules.
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<bobinator60>
ok, i'm switching over from python. bear with me :)
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<hoelzro>
bobinator60: what prompted the switch, if you don't mind my asking?
<Spooner_>
bobinator60, I'm going the other way at the moment (The reason being $)
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<bobinator60>
hoelrzo: its a polyglot app
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<hoelzro>
bobinator60: what's it do?
<bobinator60>
so instead of require_relative 'mymodule/myclass.rb' i use Include Mymodule
<Spooner_>
No, include means something else.
<bobinator60>
hoelzro: you'll have to sign a 12 page NDA
<hoelzro>
heh, ok
<bobinator60>
so instead of require_relative 'mymodule/myclass.rb' i use include Mymodule
<hoelzro>
bobinator60: no, you still need to require
<hoelzro>
include has nothing to do with loading code
<Spooner_>
require_relative loads the file. include just affects the namespace of what you've loaded.
<bobinator60>
oi
<bobinator60>
got it thanks
<Spooner_>
require_relative "frog"; include Frog => from frog import *
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<bobinator60>
touchdown jesus
<Spooner_>
require_relative "frog" => import frog
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<bobinator60>
thank you. one more question
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<Spooner_>
Though in your example, you'd require_relative all those files, then include Rails to get them all in the global namespace.
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<bobinator60>
can i do this multiple levels deep?
<bobinator60>
like require 'out/mid/in/someclass.rb'
<dmonjo>
ie = Watir::IE.new what is the equivalent of this on linux
<hoelzro>
sure
<Hanmac>
you mean with require_relative? yeah as deep as you want
<dmonjo>
usig the webdrivers
<Spooner_>
Yeah, though require_relative it and don't add the .rb (it knows you mean .rb).
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<bobinator60>
how does that affect the modules?
<bobinator60>
thanks Spooner_
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<bobinator60>
do I say module out; module mid; module in; class myclass ?
<bobinator60>
and include Out::Mid::In ?
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<hoelzro>
bobinator60: you don't *need* to include
<bobinator60>
correction: do I say module Out; module Mid; module In; class myclass ?
<hoelzro>
you can just refer to it as Out::Mid::In::MyClass
<Spooner_>
Yes, you can do that.
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<bobinator60>
is "module" an executable statement? can I compose the modules by examining the path?
<Spooner_>
As hoelzro said, you don't need to include anything. You only need to do that if you want to put everything from the module in the current namespace (so you can do MyClass instead of Out::Mid::In::MyClass).
<bobinator60>
i see
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<bobinator60>
is "module" an executable statement? can I compose the modules by examining the path?
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<Spooner_>
Modules have nothing to do with paths in Ruby. It just makes sense to put things in inner modules in directories of the same name.
<bobinator60>
Spooner_: yes, i got that. just trying to avoid typing mistakes :)
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<Spooner_>
(well, MyModule would be my_module as a path, of course).
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<bobinator60>
yep. ok.makes sense. thanks
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<Kovensky>
\ruby 2.0/
<dmonjo>
Spooner_: you ran watir with which browsers?
<dmonjo>
on linux
<apeiros_>
Spooner_: MyModule -> my_module is rails convention. ruby convention is MyModule -> mymodule (I find neither good)
<dmonjo>
headless or with browsers?
<Spooner_>
apeiros_, I follow the Rails convention then. I am evil ;)
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<apeiros_>
is the second statement a conclusion from the first, or just on its own? :)
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<Spooner_>
Conclusion. I don't use eval, so I can't be all bad.
<apeiros_>
everybody uses eval.
<apeiros_>
that's how require and load work :-p
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<bobinator60>
why do some ruby method parameters have leading colons?
<Spooner_>
Oh, I was just going to say that is how attr_reader works.
<bobinator60>
def foo :param
<apeiros_>
(which is why it's stupid to carte-blanche vilify eval)
<Spooner_>
It is a symbol, which is a sort of string.
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<apeiros_>
It is a symbol, which is a sort of an integer
<Spooner_>
Ha, OK. Good point.
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<apeiros_>
bobinator60: lets just say, just like 12, and "hello" are Integer and String objects (literals), :foo is a Symbol object (a literal too)
<apeiros_>
:foo.class # => Symbol
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<apeiros_>
and String is in many regards which matter to a coder closer to a string than to an integer ;-)
<apeiros_>
gah
<apeiros_>
and *Symbol* is in many regards which matter to a coder closer to a string than to an integer ;-)
<bobinator60>
apeiros_: ok, its just another kind of object that seems to be used instead of quoted string constants
* apeiros_
has seen too much sql today and hence is going slightly mad
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<Spooner_>
Yep. Used a lot for Hash (dict) keys among other things.
<bobinator60>
ruby-mode.el gives them a nice aqua color
<Spooner_>
bobinator60, And while you are here, enjoy our wonderful case expression. I miss it so in Python ;(
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<apeiros_>
but with those queries, it wouldn't matter… it's just not my type of problem
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<dmonjo>
forgot a '
<dmonjo>
working fine
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<bobinator60>
Spooner_: thanks, i will partake when it gets passed around
<dmonjo>
Spooner_: you meant previously to run watir headless and to get the html code into a nokogiri?
<Spooner_>
No, I've only used watir with a browser. I used mechanize when I didn't need Javascript running.
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<dmonjo>
Spooner_: how can you get a nokogiri from the watir browser?
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<Spooner_>
The html doesn't go directly into nokogiri, which is what I said before. I think mechanize integrates with nokogiri, but you can create a nokogiri doc with watir using doc.html
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<dmonjo>
problem would be mechanize doesnt work with jscript and ajax
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<Spooner_>
Indeed.
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<Spooner_>
Nokogiri::HTML(doc.html) is easy enough to do.
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<Spooner_>
Or rather, doc = Nokogiri::HTML(browser.html)
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<dmonjo>
sorry for being a bit slow in that, you mean open watir webpage and trigger the jscript section then call nokogiri on that page (browser.html) ?
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<Spooner_>
Yeah, though you don't have to do anything yourself to get the javascript to run.
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<dmonjo>
ok in watir i can get that browser.html returned, into ruby to manipulate with nokogiri?
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<aedornm>
hmmm.. why does OpenStruct initialize with hash=nil, instead of hash={} to remove the "if hash" check? And why does it use for k,v in hash instead of hash.each?
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<_br_>
apeiros_: well if its oracle I can totally understand ... better use some "eyebleach" ;)
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<aedornm>
I'm just looking at one of those not-very-Ruby-like Ruby standard lib examples, aren't I?
<Spooner_>
It was probably written in 1964.
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<aedornm>
still trying to figure out what the purpose of comparing the method name to :[] is
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<Spooner_>
Probably because it wants to not over-write that method, so you can still do ostruct[:bleh]
<Spooner_>
Odd that it is thinking about [] then in older versions.
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<Spooner_>
Maybe it wants to be sure to say "undefined method []" not just return nil, which is what you'd get otherwise from any other method call on the OopenStruct.
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<apeiros_>
aedornm: I always patched ostruct to what it is in 2.0
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<aedornm>
heh.. in 2.0 it's hash.each_pair, but still checks against hash. I guess they really don't want you to pass nil. 2.0 it doesn't check against :[], either.
<aedornm>
apeiros_: I'm seeing why.
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<aedornm>
Well, no matter. For my purpose I just need to change a few instance methods, and it looks like it will still work in 2.0
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<bobinator60>
how close are ruby regular expressions to the ones in python?
<bobinator60>
(i'm looking at you perl)
<Spooner_>
Think they are the same. Big difference is that they are an actual object in Ruby.
<banisterfiend>
literals*
<bobinator60>
python has the 're' package, but I get the point
<Kovensky>
too bad ruby has no magic s/// or y/// operator :(
<Spooner_>
re.match("\d{3}", "999") compared to /\d{3}/.match("999") (or "999".match(/\d{3}/)
<Spooner_>
.text isn't the html, it is the plain text (html stripped out). I said to use #html
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<dmonjo>
ok!
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<dmonjo>
b.html still same nothing returned
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<Spooner_>
You may possibly have to wait a bit for the comments section to fill up too. Try a sleep 1 before you get b.html
<dmonjo>
hmm ok
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<Spooner_>
And puts @full_html just to see if it is what you expect (i.e. whether the html is wrong or the xpath is wrong).
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<dmonjo>
workdss great :)
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<Spooner_>
You should probably use: while @doc.xpath('//*[@id="dsq-global-toolbar"]/ul[2]/li[3]/ul/li[2]').nil?; sleep 0.1; end rather than waiting 1 (which might be too long or too short).
<dmonjo>
ill try now with headles to see if i can get watir with a faster response
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<foxnewsnetwork>
why does Array#zip return nil when you pass it a block? Is there some sort of zip_with method somewhere to get (for example) [1,2,3].zip([1,2,3]) { |a| a.first + a.last } to return [2,4,6] other than straight up doing [1,2,3].zip([1,2,3]).map { |a| a.first + a.last } ?
<aedornm>
Spooner_: can just use .when_present
<Spooner_>
foxnewsnetwork, Using map is the right way.
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<Spooner_>
aedornm, Ah, that is good to know :$
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<Spooner_>
I'm such a nub, it seems!
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<Hanmac>
this may better: [1,2,3].to_enum(:zip,[1,2,3]).map { |a| a.first + a.last }
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<dmonjo>
the guru awakened :)
<foxnewsnetwork>
Hanmac: can you please explain what's the point of doing #to_enum on an array?
<Hanmac>
foxnewsnetwork: my to_enum prefends the zip method from returning an array, so map can use the enumerator directly
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<JonnieCache>
i prefer this: http://xkcd.com/844/ (i have it on the wall by my desk at work)
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<Skalax>
enum = str.enum_for(:each_byte) <----- each_byte is a symbol here not a method name right? so enum_for will yield to each_byte block?
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<Hanmac>
Skalax yeah, but each_byte also returns that if no block is given
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<aedornm>
Nothing is more infuriating than having to use MS Office 365 for mail.
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<aedornm>
I take that back. Having to use MS Office 365 for email as the back end and having to use old Unix "mail" as the front end would most certainly annoy me more.
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<Skalax>
means, puts "Using enum",name.to_enum(:each_char).map {|x| x} puts "Using each_char",name.each_char.map {|x| x} are exactly the same not even minor difference :/
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<apeiros_>
why's that :/ ?
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<ahhhh>
hey i'm new with ruby
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<ahhhh>
i've installed rvm and sinatra
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<ahhhh>
to get started
<ahhhh>
now i receive an error
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<ahhhh>
inside app folder i do
<ahhhh>
ruby basics.rb
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<ahhhh>
and it says MacBook-di-Filippo:Sinatra ispuk$ ruby basic.rb
<ahhhh>
ruby: No such file or directory -- basic.rb (LoadError)
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<interactionjaxsn>
no sinatra in the gem list?
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<Hanmac>
ahhhh as you can see, sinatra is missing in gem list
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<ahhhh>
nope )
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<ahhhh>
so now install that !?
<ahhhh>
gem install sinatra ?
<llaskin>
in test unit, is there a way to set an action to perform on failiure?
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<llaskin>
so for example if a test fails, I want it to output something to the screen(or in my case take a screenshot)....is there some setting I can set?
<aedornm>
Hmmm.. Ruby is not timing out a socket connection
<ahhhh>
so my mac decided i can't install nothing today!?
<benmatthew_>
Hey all, I was wondering if anyone could answer this question. Is there a way to pass a singular string/object through to do a block. I want to test a object.each statement with a single variable by just replacing the first line.
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<Tricon>
benmatthew_: And object doesn't implement :each?
<ahhhh>
interactionjaxsn: why does i receive these errors? :/
<zoned>
how can i add an attribute to an object? i just need it for a very short time, i don't want it to be part of the objects class, or persist in the database in any way
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<ahhhh>
interaction and how to re-install ruby now ? :O
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<ahhhh>
sudo apt-get install ruby18 ruby18-dev ?
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<ahhhh>
19 maybe?
<shevy>
eeks
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<shevy>
you try to install debian ruby with apt-get
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<ahhhh>
i'm on macosx
<shevy>
you use apt-get on mac?
<ahhhh>
never used
<aedornm>
shevy: I think you have some secret sense when someone mentions installing Ruby via apt-get...
<shevy>
aedornm hey, perhaps he is lucky and it works :D
<ahhhh>
pls help dudes
<shevy>
zoned you cant from the outside, unless you added a method to it beforehand
<ahhhh>
i'm in trouble
<shevy>
ahhhh hey you use mac man
<ahhhh>
and ? :D
<shevy>
dont the mac users have some supercool way to install things?
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<ahhhh>
maybe they have but i'm newbie on mac too :D
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<ahhhh>
so help me pls :D
<aedornm>
I don't know macs, sorry. When I win the lottery maybe I will buy one!
<Nitrodist>
anyone having issues with rubygems.org? getting an OpenSSL::SSL::SSLError
<shevy>
I have no idea how mac people install anything
<zoned>
after searching and trying to do this for about 45 minutes, i finally found something that worked. why was it so easy yet so hard to find?? @object[:new_var] = "value" works perfectly
<wrapids>
Does anyone see a reason that I would be getting a MySQL 1064 syntax error near '' with this? https://gist.github.com/anonymous/1962238995d915baf04f . I've printed the query statement (line 29, being run at 30), and it's perfectly valid, and returns the correct results in mysql.
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<ahhhh>
rvm
<ahhhh>
!?
<shevy>
ahhhh I tell you what I do as linux guy: ftp://ftp.ruby-lang.org/pub/ruby/ and download a version, then compile it
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<shevy>
I dont use rvm
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<shevy>
but you use a mac, so possibly compiling is not easy
<shevy>
on linux every 3 year old can do so
<shevy>
except debian users
<ahhhh>
where is inter my friend
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<shevy>
zoned yes, internally, but not externally
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<shevy>
zoned in your example @object is a hash, an instance variable, which you define within your class
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<ahhhh>
so no one uses a mac here ? :(
<ahhhh>
i need to reinstall all the ruby env
<ahhhh>
ruby,rvm,homebrew, sinatra
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<interactionjaxsn>
ahhhh: i'm on a mac
<wrapids>
This one's a bit more in scope for the particular problem http://bit.ly/XAbw4B
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<Xeago>
banisterfiend: you are dutch right?
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<banisterfiend>
Xeago: no, i just live in this land of the blonde
<Xeago>
of the blonde ;O
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<banisterfiend>
Xeago: what does "riblappen" mean?
<Xeago>
I'd rather search blondines in scandinavia
<Xeago>
braising beef
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<Xeago>
on bone
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<banisterfiend>
Xeago: so what's the name for normal frying steak?
<banisterfiend>
i cna't seem to find any of that
<wrapids>
At line 5 on that gist I'm getting a mysql syntax error, but the query I'm running (pasted into the comments) runs perfectly in the terminal.
<Xeago>
biefstuk
<Xeago>
bief
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<banisterfiend>
Xeago: do you think we should force all dutch to speak english all the time
<Xeago>
totall
<Xeago>
y
<Xeago>
banisterfiend: so where do you come from, where do you live, and why do you call it the land of the blonde?
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<otters>
does rubygems have its own version of require?
<Xeago>
otters: yes, you should use a newer version of ruby tho
<sw99>
Can I install Ruby in a custom location like this? Download the source, do ./configure --prefix=/Users/sw99/Desktop/foo and then make and make install ?
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<banisterfiend>
Xeago: 1. new zealand 2. leiden 3. because there's lots of blondes here
<otters>
Xeago: I'm using 1.9.1
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<otters>
but having load problems with Weechat
<sw99>
I wanna install Ruby 1.9 in a custom location. My current OS X has version 1.8 by default
<banisterfiend>
otters: yuck
<otters>
banisterfiend: have to
<banisterfiend>
otters: 1.9.1 is the weirdest ruby ever
<otters>
yeah
<Xeago>
otters: it shouldn't be necessary to require rubygems (so it redefines require)
<otters>
I'm just trying to figure out how to get require to work
<banisterfiend>
otters: how come u have to? who ever is making you use that buggy, messed up ruby should be shot
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<otters>
$LOAD_PATH are the same in irb and weechat, but require 'ruby_gntp' works in irb but not in weechat
<otters>
and I want to know why
<Xeago>
banisterfiend: I'd like some proof of the quantity of that
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<interactionjaxsn>
sw99: rvm
<banisterfiend>
otters: even instance_eval is broken in 1.9.1
<Xeago>
with decent quality aswell..
<otters>
so help me work around it
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<otters>
can I manually set up gem load paths?
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<Xeago>
otters: si the gem apath set up correctly?
<banisterfiend>
otters: it's like someone using a knife to hammer in nails and asking for help
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<otters>
Xeago: no idea
<ahhhh>
i got The provided compiler '/usr/bin/gcc' is LLVM based, it is not yet fully supported by ruby and gems, please read `rvm requirements`.
<Xeago>
try requiring the full path from
<ahhhh>
with rvm install ruby-1.9.2-p320
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<otters>
from???
<Xeago>
ahhhh: I recommend ruby_build gem to build ruby
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<otters>
banisterfiend: it's like someone using a bad hammer to hammer in nails
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<ahhhh>
Xeago: what i need to do? ruby_build gem ?
<banisterfiend>
otters: given the brokenness of 1.9.1, it's really more like a knife :) srsly, any library using instance_eval will mostly just not work. Anyway..goodluck! :)
<otters>
banisterfiend: it's not using instance_eval
<banisterfiend>
otters: no, but any gem you use that uses it (which is quite a lot) will just not work, so you've cut the number of available gems you can use down quite a lot
* Xeago
is still waiting for quantity with at least average quality, banister!
<banisterfiend>
Xeago: im just talking from experience
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<banisterfiend>
i've been to many other countries, and holland has the most blondes per capita i've encountered
<Xeago>
never been to scandinavia then :)
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<banisterfiend>
Xeago: well i have, but i was too young to pay atetntion to those things :)
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<Amnesia>
question, how could I filter "12345" in "last full capacity: 12345 mwh" using scanf?
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<Amnesia>
.scanf("last full capacity: %s\n"))
<Amnesia>
^ no success
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<otters>
oh, oky
<otters>
and now the Gem internals say that there are no rubygems installed at all
<otters>
this is bullshit
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<Spooner_>
Amnesia, Don't use scanf. "last full capacity: 12345 mwh"[/\d+/]
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<Amnesia>
Spooner_: well it
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<Amnesia>
's a file I'm reading
<banisterfiend>
otters: just curious, why are oyu stuck on 1.9.1 ?
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<otters>
one sec
<ForSpareParts>
Does anybody know the "right way" to set precision in SASS when I'm using it through the sass-rails gem?
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<otters>
hang on
<banisterfiend>
otters: ruby -v :)
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<Amnesia>
Spooner_: would you know a better way?
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<Spooner_>
"last full capacity: 12345 mwh"[/(?<=last full capacity:\s)(\d+)/]=> "12345" And use f.gets ???
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<otters>
is there a rubygems API
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<Xeago>
!
<banisterfiend>
otters: of course
<Spooner_>
Amnesia, I never use scanf, to tell the truth.
<[OES]>
Evening folks
<banisterfiend>
otters: under the 'Gem' namespace, believe or not ;)
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<[OES]>
And Xeago :-)
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<Amnesia>
Spooner_: ty, I'll give f.gets a shot
<Xeago>
apeiros_: got some spare time perhaps?
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<Spooner_>
Amnesia, Is it failing, however, because you didn't include "mwh" in your scanf pattern before the newline?
<runixo>
heyas. we're chasing a "memory leak", we know the object_id of the 'leaked' string, but we don't know how to find the object referencing it. any hints?
<Amnesia>
hm could be
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<otters>
banisterfiend: can it install gems
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<banisterfiend>
otters: yeah
<Xeago>
runixo: sounds like a banisterfiend challenge
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<otters>
okay, the only thing that looks like it could do that is Gem::Installer which is not in scope
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<runixo>
Xeago: um. I've no idea what are you talking about :)
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<Xeago>
banisterfiend has quite the knowledge about bindings, he might nkow some tricks to get the binding the object is still 'used' in
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<banisterfiend>
runixo: do you recognize the string? what's in it?
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<aedornm>
anyone try Trollop on 2.0?
<runixo>
banisterfiend: I recognize it 100%, I know where it came from, and I tried to trace, manually where it could leak. but no luck... (in the meanwhile I found a weird leak on String#gsub("foo"))
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<banisterfiend>
runixo: is it being modified at all?
<banisterfiend>
runixo: or does it remain the same?
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<runixo>
banisterfiend: seems to be the original string, unchanged
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<banisterfiend>
runixo: at what point do you expect the string to be GC'd ? can't you step through with a debugger up until the point it's supposed to have all references to it lost
<banisterfiend>
also
<banisterfiend>
keep an eye out for any procs that might close over it
<banisterfiend>
as they're often the culprit in things like this
<banisterfiend>
and check the lifetime of those procs
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<runixo>
banisterfiend: ok, letme check this
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<Xeago>
counterstrike 1.6 on osx runs great!
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<DDark>
Hey All, I have a string like "book-club,math,science:element=uranium" I have a regex like >(/(\w+)*|-:?(.*)/)< which worked great until the string contained book-club. The hyphen throws it off, and ive been testing with rublar, but I cannot seem to match it properly.
<Amnesia>
question, would there be something prettier as: 'MemTotal: 234334 kB'[/\d+/] if 'MemTotal: 234334 kB'.match(/^(MemTotal:|MemFree:|Buffers:|Cached)/) ?
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<DDark>
Im trying to match the book-club also, but its matching book and club as two separate words, and I need to match the entire thing
<apeiros_>
reading the questions here, I think I indeed better keep sleeping
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<sam113101>
shock_one why do I get this?
<DDark>
oh cool. Thank Xeago. Ill see if I can get this nailed out.
<Xeago>
I find debuggex quite nice, the graph does wonders
<Xeago>
(and sliders!)
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<shock_one>
sam113101, I'm not sure, but I think you can't write blocks inside of brackets
<sam113101>
;_;
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<shock_one>
sam113101, you can factor this code out to a function
<Amnesia>
apeiros_: know how to do that with one function:)?
<apeiros_>
Xeago: wow, debuggex looks nice
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<shock_one>
sam113101, actually, I think your code is too functional. I would do each_with_index and inside it add score to some outer variable, like sum.
<apeiros_>
Amnesia: hint, String#[] returns nil if it doesn't match
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<shock_one>
sam113101, this way you wouldn't need inject at all.
<shock_one>
sam113101, makes sense?
<Amnesia>
apeiros_: yeah but it has to be preceded by (MemTotal:|MemFree:|Buffers:|Cached)
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<shock_one>
expression returns a value, that can be either truthful of not.
<apeiros_>
shock_one: I'd say that you have a choice
<shock_one>
or not
<Spooner_>
If requires a truthy or falsy value, not strictly true/false (that is false/nil vs anything else).
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<runixo>
banisterfiend: thanks for your help. we haven't still found the bug. we'll continue tomorrow. thanks!
<Spooner_>
runixo, Just buy more memory and forget about the bug :D
<shock_one>
apeiros_, right. Like with «or» and «||». Sometimes I can't use this lovely «or» because of goddamn precedence
<runixo>
Spooner_: :)
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<shock_one>
I agree that it's a matter of opinion, but I think it's a bad design decision that makes things more complicated without necessity
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<wrench>
I'm trying to use the dashing gem. I'm following short tutorial: installed gem, created new dashing project, ran bundle, but when I run 'dashing start' I get this error:
<wrench>
/usr/local/rvm/gems/ruby-1.9.3-p392/gems/thin-1.5.0/lib/thin.rb:6:in `require': cannot load such file -- openssl (LoadError)
<wrench>
any ideas?
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<shock_one>
wrench, install openssl package
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<wrench>
shock_one: its already installed
<shock_one>
wrench, maybe you need libssl or something.
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<squishy_1>
how would I access the value at that hashname?
<squishy_1>
blah[:hashname][:value] ? or something like that
<shock_one>
blah[:hashname][:value]
<squishy_1>
hmm
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<squishy_1>
ill try that again
<shock_one>
squishy_1, why not to try it by yourself?
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<squishy_1>
yeah i definately typed it as was said but that gives this error "can't convert Symbol into Integer"
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<squishy_1>
so i thought there was something I wasnt understanding
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<banisterfiend>
squishy_1: definitely*
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<Spooner_>
squishy_1, Means blah is an array, not a hash.
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<squishy_1>
well I was trying to make my example more generic. Im pretty sure it is a hash
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<squishy_1>
actual application is cookies[:secure_user_id] = {value: session[:username], protect_from_forgery: true}
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<squishy_1>
trying to learn things about cookies
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<Spooner_>
Well, in that case, either cookies and/or session are actually Arrays, not Hashes.
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<Spooner_>
Try cookies.class and session.class
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<squishy_1>
Spooner_: examples I find use things like session[:username] and that seems to work
<squishy_1>
Spooner_: also I got the session name part to work I just wanted to be able to close my browser and then reopen it and be logged in
<Spooner_>
Yes, but can't convery Symbol into Integer is what you get when you try to index an array (which only accepts integers) with a Symbol.
<DDark>
ok so im getting close. I dont think I need the regex and thus id improve performance. I have my string >str = "foo-bar,foo,bar:baz=foo"< and my inject >str.split(',').inject({}) { |h, (k, v)| if v.nil? then h[k] = nil else h[k] = v end ; h }<. If you try that in IRB you will get >{"foo"=>nil, "bar:baz=foo"=>nil, "foo-bar"=>nil}<
<DDark>
Id like to get >{"foo"=>nil, "bar"> { "baz" => "foo"}, "foo-bar"=>nil}<
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<DDark>
not quite sure how to get baz=foo into a hash under bar. Any help would be appreciated.
<apeiros_>
`; h ` means you're abusing inject.
<apeiros_>
you want each_with_object
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<DDark>
im on ruby 1.8.7 i do not have each with object :(
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<Spooner_>
The question then is why use 1.8.7, but I know we won't get a useful answer ;)
<DDark>
company *cough* standards *cough*
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<DDark>
not up to me in other words
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<Spooner_>
Always sensible to use products that have stopped being supported, but yeah, companies are companies :D
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<shevy>
just because it is not supported anymore doesn't mean it is non functional
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<Spooner_>
It is if you value security for your web-server.
<DDark>
So keeping in mind i do not have the luxary of 1.9 fun, how can I achieve my original goal? Id appreciate any pointers or constructive flaming.
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<Spooner_>
DDark, Well, for starters, you dance around nil for no reason: str.split(',').inject({}) { |h, (k, v)| h[k] = v; h } is the same
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<DDark>
by god so it is. heh yeah if nil is already nil no need to assign ;)
<tesuki>
Interjection> RHEL5 and RHEL6 ships with 1.8.5 and 1.8.7.
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<shevy>
they can upgrade to 1.8.7-p358
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<DDark>
I was thiking about tryiing Hash[v.split(":")] but I get a stack to deep error
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<Spooner_>
DDark, str.split(',').inject({}) { |h, e| k, v = e.split(":"); h[k] = v ? Hash[*v.split("=")] : v; h }
<DDark>
I apprecate the hand holding spooner, but id like to understand a bit more about that. What is the purpose of the * before v.split in the hash?
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<Spooner_>
Works in that case, but not sure I know the full spec.
<dmonjo>
is their something like filestreams in ruby? example i want to connect tcpport output from 1 connection to be redirected to a tcpport of another connection, i used to do that using streams in java
<Spooner_>
Hash[] wants an even number of params which are k, v, k2, v2, etc.
<Spooner_>
* (splat) means to convert the array, which is a single value, into multiple parameters.
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<pandawarrior1>
hi i've created a class and i need a way for this class to keep track off all instances of itself
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<pandawarrior1>
is there a common idiom ruby uses to do this?
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<Spooner_>
pandawarrior1, Use a class instance variable which is an array and add to it in initialize.
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<arturaz>
pandawarrior1, there's also ObjectSpace, but its a hack
<dmonjo>
threads execute on multiple cpu cores automatically? or we need to specify multiple cores somewhere? like putting single core for low priority ones and multiple for others?
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<Spooner_>
Not in CRuby they don't. Other implementations they do.
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<pandawarrior1>
Spooner_: how would i do that?
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<pandawarrior1>
@classes ||= [], then @classes << self
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<interactionjaxsn>
it is
<pandawarrior1>
it looks like magic, though
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<Spooner_>
Get used to magic in Ruby ;)
<pandawarrior1>
i'm guessing ':instances: is a method avaliable to instances of Object?
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<pandawarrior1>
just trying to get my head around stuff, don't want to be a copy and paste 'coder'
<Spooner_>
No, it is on the class itself, so you would do Fish.instances to get it (or self.class.instances in an instance).
<Spooner_>
Look up "Ruby class instance variables" for more examples.
<pandawarrior1>
k
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<pandawarrior1>
thanking youuu!
<Spooner_>
pandawarrior1, Updated it with example.
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<pandawarrior1>
nice
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<pandawarrior1>
yeah this is sweet
<pandawarrior1>
if I wanted the class itself to return those instances, I would use self.instances?
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<interactionjaxsn>
am i correct in saying that class << self; attr_accessor :instances; end creates getter and setters?
<canton7>
self.class.instances . Spooner_ said that above
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<Spooner_>
"self" when inside the class block refers to the class. Outside of it it doesn't.
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<pandawarrior1>
ah ok
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<Spooner_>
interactionjaxsn, Yeah, if it wasn't inside the class << self; end, then they would be for the instance, but there they are added to the class itself.
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<Spooner_>
Inside an instance method, "self" refers to the instance itself.
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<apeiros_>
s/an instance//
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<pandawarrior1>
is there a way to get a copy of, say, an array and but have the copy in sync with the original array. So like if the original array gets extra elements, the copied array would have those too?
<Spooner_>
And on the moon, "self" refers to the King of the Moon.
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<Spooner_>
pandawarrior1, You only have references to object.
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<pandawarrior1>
right, like pointers to a value
<pandawarrior1>
but an array is a reference to a collection of values/objects
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<Spooner_>
Yeah, so just by putting a reference in another variable, you have multiple ways to access the exact same object.
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<pandawarrior1>
umm i'm thinking too linear
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<Spooner_>
An Array is a collection of references. A variable can be a reference to an Array, but an Array is not itself a reference (depending on how you see it).
<Spooner_>
If you are thinking in C/C++ terms, there are only references in Ruby. No pointers or values.
<pandawarrior1>
yeh i get what you are saying
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<pandawarrior1>
so, if i have a class and it launches new numbers
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<Spooner_>
Into outer space?
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<pandawarrior1>
lol, not quite
<pandawarrior1>
i mean instantiates new numbers
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<Spooner_>
Numbers are Objects. Everything is objects, so everything is referenced.
<pandawarrior1>
i want a way to ask the object, what number are you, little fella?
<dmonjo>
Thread.start(dts.accept) do |s| <-------------------------- does this thread get created as soon as a new connection is established or is it created and listens before a connection is established?>
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* pandawarrior1
goes away and rethinks what i am trying to actually solve
<Spooner_>
(If we look at implementation, some things can be immediate values in reality, but they act, to the programmer, as though they were normal objects).
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<Spooner_>
dmonjo, It would not be created until the server accepted a connection.
<interactionjaxsn>
pandawarrior1: is object id
<interactionjaxsn>
his*
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<Spooner_>
Since it needs to do dts.accept before the result of that can be passed to Thread.start)
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<dmonjo>
what happens if i do manually 10 dts.accept but i dont have any connections?
<Spooner_>
Krakatoa will explode.
<dmonjo>
lol
<Spooner_>
You won't be able to do more than one, since the first one will block.
<pandawarrior1>
interactionjaxsn: looking into that
<dmonjo>
loving ruby
<Spooner_>
interactionjaxsn, What about object ID?
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<interactionjaxsn>
Spooner_: pando asked "what number are you, lil fella?" I'm asking if he wants the object id of the number or the value that 'number' holds
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<Spooner_>
Oh yes, I see. The number in object id should not be looked at though, since it is magic.
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<Spooner_>
Like a fairy.
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<pandawarrior1>
Spooner_: interactionjaxsni i'm not interested in the object id, i'm actually interested in the value
<pandawarrior1>
i want a method called 'is_number?' to return my a value
<pandawarrior1>
but this value is different for every new instance of my Number class
<pandawarrior1>
so num_1 = Num.new, num_2 = Num.new
<shevy>
Readline.completion_append_character <-- does this even work?
<pandawarrior1>
yeah, I was thinking an array on the class level?
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<apeiros_>
pandawarrior1: foo? methods usually return true or false
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<pandawarrior1>
wait, i think I have it
<bean__>
makes me rage when people don't have ? methods return t/f
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<Spooner_>
pandawarrior1, You could do def number; self.class.instances.index(self); end (not efficient, but you could always just do @number = self.class.instances.size; self.class.instances << self in initialize instead.
<interactionjaxsn>
pandawarrior1: if we go back to the Fish is is Fish.instances.first?
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<skyee>
hello, anyone here?
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<shevy>
skyee yeah
<apeiros_>
no
<shevy>
skyee we are the ruby experts
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<skyee>
sup shevy... nice to hear
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<shevy>
but if you don't have a question about ruby
<shevy>
we must slay one kitten :(
<interactionjaxsn>
not the kittens
<skyee>
i totally do, i just wasn't sure what the etiquette was for asking questions
<skyee>
never been here before
<shevy>
skyee you need to dance for a few hours, then you may ask one but only one question
<skyee>
i just danced in my seat for a few seconds, that will have to suffice!
<interactionjaxsn>
skyee: unless you dance some more. rinse and repeat
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<re75>
!list
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<skyee>
can i just copy and paste code to this chat or is there another way
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<pandawarrior1>
how can number_generator keep track of the numbers assigned so that it assigns a different number
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<pandawarrior1>
and how can i get is_number? to return me back the specific number it was assigned
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<apeiros_>
pandawarrior1: if you don't mind huge numbers, you can use uuids
<skipper>
skyee: For multiple lines, gist.github.com is best!
<skyee>
im dumb. ok here it goes. anyone know what i'm doing wrong with this code? it's supposed to let the user enter in numbers in one string, divide it up to an array, then output the sum of the array.
<apeiros_>
pandawarrior1: otherwise, use a Set or a Hash
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<skyee>
lol cant c/p code here, of course not
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<apeiros_>
skyee: don' forget - multiple lines of code not in here, but on a paste service, like gist.github.com
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<shevy>
array.split(",") <--
<skyee>
shevy, what do you mean? i don't give any input, i ask the user to input numbers
<apeiros_>
skyee: array.split does not change array, it returns an array
<shevy>
skyee yes. this is what I am asking. I am asking what the user does. give example input.
<apeiros_>
and you have to assign that to a variable
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<skyee>
oh like 1,2,3
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<shevy>
good
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<shevy>
now assign it to array variable and you are done. array = array.split(",")
<interactionjaxsn>
array << gets.chomp ?
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<interactionjaxsn>
shevy: sorry for that
<shevy>
interactionjaxsn hmm he wants to .split I think, also array doesnt exist yet
<apeiros_>
skyee: also, don't name variables after their type. name them after their semantical content. like 'numbers'
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<skyee>
well i wanted to let the user input whatever numbers. i can do this if i give the input, but i want the user to input
<interactionjaxsn>
shevy: right
<shevy>
yes. like ... numbers = ['cat','dog','horse'] :D
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<shevy>
skyee he inputs a string via gets() though
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<skyee>
yes. so where exactly is this wrong? i'm not seeing it
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<shevy>
skyee you do not store what you want to store in the variable array
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<Hydroxide>
hi. still working in ruby 1.9.x-land... is it better style to do File.open("/blah/blah") {|f| f.read}, File.open("/blah/blah", &:read), or File.open("/blah/blah").read assuming you're sure that it's a short-lived script and open file descriptors won't be a concern?
<shevy>
I mean you store it, right. but then you .split
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<shevy>
and you believe that array is .split, but this isn't true
<skyee>
oh i see. but then doesn't the variable "array" turn INTO an array, values separated by commas?
<shevy>
print array outputs the original line, before .split
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<Spooner_>
dmonjo, Why not try Hash.ancestors and find out?
<skipper>
^
<dmonjo>
cool
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<jarred>
I'm trying to include a module within a Proc. Am I misunderstanding the intended purpose of a Proc, or am I doing something wrong?
<shevy>
jarred how do you try that?
<shevy>
hmm perhaps you want extend
<Spooner_>
linguini, I think you mean to implement to_s. adding to_str means that C can be considered to be a string.
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<jarred>
that worked
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<linguini>
Spooner_: Thanks. I was intentionally trying to overwrite to_s and to_str. It surprised me that "can be considered a string" had the effect I observe.
<jarred>
shevy: p = Proc.new { }; p.instance_eval { include ModuleName }, was what I was trying to do
<shevy>
ah
<shevy>
evals scare me
<LiquidInsect>
^
<LiquidInsect>
and including/extending a module outside of a class definition as well
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<Spooner_>
linguini, The reason is that the Range is actually "8".."6" in the end, so there is nothing to iterate.
<LiquidInsect>
what is self there? you're including the module into something... if it's Object you're going to have a bad time
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<linguini>
Spooner_: Yes, I know; thanks. What surprised me was (a..b) # a and b changed to strings?
<LiquidInsect>
Proc.new{puts self.inspect}.call
<LiquidInsect>
main
<Spooner_>
Oops, I meant: (C.new(2)..C.new(4)).to_a => []
<LiquidInsect>
hm
<LiquidInsect>
that
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<LiquidInsect>
that's just in irb so it depends on where the proc is being called I think...
<jarred>
oh
<jarred>
hmmm
<Spooner_>
linguini, But anything with to_str _is_ interchangable with a String.
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<linguini>
interchangeable at any time? That makes to_str seem fairly dangerous.
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<Spooner_>
to_s, however, is just used for printing stuff out. Doesn't mean that the string == the Object.
<Spooner_>
linguini, Not really, because they are interchangeable. If they aren't, you don't implement to_str on it.
<linguini>
class Url; def to_str; # oops, now Url methods may now be gone on objects of Url
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<linguini>
Do I misunderstand?
<LiquidInsect>
yes
<vabenjamin>
hi all
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<LiquidInsect>
just because you can use something like a string doesn't mean it loses the methods it already implements
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<LiquidInsect>
but methods that expect to receive <something that can be turned into a string with to_str> can use it like a String
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<skyee>
can ruby evaluate 1+2+3+ ? or do i have to remove the last + ?
<Spooner_>
skyee, Run it in IRB or pry an see.
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<linguini>
LiquidInsect: (urla..urlb) # so urla and urlb will retain their class, but the Range class can (for some reason) treat them like strings?
<skyee>
ive tried running it and all it does is give me the same line, with no errors
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<whitequark>
skyee: it's an unfinished statement
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<whitequark>
why would it evaluate?
<whitequark>
$ ruby -e "p 1+2+3+"
<Spooner_>
linguini, url wouldn't implement to_str. Not many things at all do (not sure I could name one other than String).
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<skyee>
all righty, thanks
<dmonjo>
if i do an inject :method1 it means i am passing no arguments as first iteration then the first return will go into the second iteration then the 2nd return will go to the sum of second iteration+return of the method correct? how can i track in the method which iteration is being done on it? use class variables to store the iteration umber?
<linguini>
Spooner_: gem addressable does
<Spooner_>
skyee, It is waiting for you to enter the last value so it can complete the expression.
<LiquidInsect>
linguini: no
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<Spooner_>
linguini, Oh, there is a Symbol.to_str, because that is pretty stringy ;)
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<Spooner_>
Oh no there isn't. Noobs telling me that on the blogosphere...bah!
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<linguini>
If adding a method to a class results in objects of that class /changing type/ to a String willy-nilly, it seems like a useless method because by defining that method you're effectively throwing away the class and replacing it with String.
<Spooner_>
When the user does something with it that wouldn't make sense unless it was a string, yes, but in other situations it doesn't convert it.
<linguini>
Perhaps I shouldn't say "changing type".
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<Spooner_>
If I do "hi" + url, then it wants a string, because you can only add a string to another string. You can convert it yourself with to_s or if you are happy for Ruby to do it, you implement to_str to say, "yeah, if you need a string, I am one".
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<Spooner_>
But pointless arguing it any more. Just don't use to_str and use interpolation (with to_s) for joining things that are stringish.
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<dmonjo>
anything easier than using multi dimensional hashes? i am finding a bit hard to understand them