<swarley>
That would only matter if you were dealing with it manually
<swarley>
Spooner; :c
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<Guest14528>
Can you give me a real code example?
<swarley>
spooner pretty much did
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<Spooner>
Yeah, just replace "draw cube at xyz" with your lines to draw (9 + 10).
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<Spooner>
Though actually, are you aware that glTranslate doesnt' reset the coordinates to 0, so you'll keep moving away from the origin? You need to push and pop the matrix in the loop (or work out the change in coordinates which is possible, but always make it work in the easiest way before you worry about optimisation).
<tpe11etier_>
Does anyone use RubyMotion here with SUblimeText2? I do and when I installed an autocomplete package, it broke Ruby autocomplete. Wondering if anyone had the same issue and fixed it.
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<Guest14528>
The push pop fixed a part of it. Now I need a square shape
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<Guest14528>
Just How would I get a sqaure shape
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<GranMal>
Anyone know of a carrier wave add-on that handles background jobs for uploading files to backspace cloud files?
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<GranMal>
backspace = rackspace
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<stev923>
hi
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<shadewind>
when is the "then" keyword used in an if clause?
<CaptainJet>
if condition then code end
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<shadewind>
only required when single line?
<CaptainJet>
yep
<CaptainJet>
and even then, you could substitute with semi-colons
<CaptainJet>
if condition; code; end
<shadewind>
CaptainJet: why the semicolon after code?
<CaptainJet>
a semi-colon is basically the same as a new line
<CaptainJet>
except on one line, and can be grouped together with a conditional too
<shadewind>
right
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<shadewind>
but it seems it's not required unless there are multiple statements
<swarley>
shadewind; yes, its only needed in cases like if this then that end
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<CaptainJet>
semi-colons are almost never actually needed in that sense
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<shadewind>
if i > 0 then puts "hello" end
<shadewind>
is correct, isn't it?
<swarley>
yes
<swarley>
you can also add an else clause to that if i'm not mistaken
<CaptainJet>
if i > 0 then puts "hello" else puts "goodbye" end
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<Monofu>
Programming contest practice help is needed! Any suggestions on how I should approach this problem? https://gist.github.com/3929077
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<Spooner>
shadewind : I'd use this rather than use one-line if/end: puts "hello" if i > 0
<shadewind>
yeah sure
<shadewind>
I just wanted some clarification about 'then'
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<Spooner>
shadewind : Ah, OK. You also need it in case statements if you want them one-lined: case x; when 1 then "hello"; when 2 then "bye"; end rather than case x; when 1; "hello"; when 2; "bye"; end
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<swarley>
something that took me a long time to learn about was commas in when
<swarley>
i jut had no idea for like, years
<Spooner>
You used multiple clauses?
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<swarley>
yup.
<swarley>
I dont even remember how i came about knowing it
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<Spooner>
swarley : case is filled with magic.
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<jkbbwr>
whats the point in ! at the end of methods?
<swarley>
Tell me more of its magical tales
<jkbbwr>
liek "test".capitalize!
<swarley>
jkbbwr; its used to denote a dangerous method with side effects
<swarley>
for example
<swarley>
"text".capitalize, returns "Text" but that is a new string
<jkbbwr>
swarley: Ah got you
<jkbbwr>
! is inplace
<jkbbwr>
losing the original version
<Spooner>
jkbbwr : It is just part of the name. It the case of strings, the ! means inplace.
<swarley>
Generally, but not always
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<swarley>
its use in general means that it is the dangerous form of a method
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<Spooner>
swarley : I mean the whole === business in case, so you can do a lot of crazy stuff if you are perverse.
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<swarley>
what the hell does === do in case?
<swarley>
I mean, i learned about <=> the other day and was like "how did i not know that?"
<Spooner>
It allows you to do stuff like (matches all of these): case 5; when Integer; when Fixnum, when 1..15; when 5; end
<swarley>
ohh, nifty
<swarley>
also, ffs, rice failed building from gem
<swarley>
/usr/bin/ld: /usr/local/lib/libruby-static.a(array.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC
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* swarley
tries to build from source from github
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<Spooner>
swarley : And you can match on regexp for strings. Anyway, since you can define === on anything, you can define how case matches. Just like <=> for sorting, though I find people don't use <=> very much since we gained #sort_by
<swarley>
Ah. Well looks like i learned all too late
<Spooner>
Used to use it a lot in #sort {|a, b| a.wa <=> b.wa }
<Spooner>
But that was crazy slow ;)
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<swarley>
asdfgh anyone else have a build fail with rice?
<Spooner>
swarley : And, in case you didn't know, $x is a global variable. So endeth the Ruby lesson :D
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<Spooner>
swarley : I'm just trying it here, but it is taking a while.
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<swarley>
Lololol
<swarley>
maybe i have to recompile ruby with non static libs?
* Spooner
shrugs.
<Spooner>
I'll tell you in a while when mingw gets its act together ;)
<swarley>
haha have fun
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<swarley>
okay, i might have fixed it doing a really weird thing
<Spooner>
Balancing a pickled egg on your nose?
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<swarley>
nope, but it didnt work after all
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<swarley>
now its a new problem :|||
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<swarley>
fuck this. I'll just use extern "C" and do it all the old fashion way
<Spooner>
swarley : Rice compiled here on Windows, so there is no excuse there!
<swarley>
ugh
<swarley>
must be ubuntu
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<Spooner>
Probably trying to compile it too quickly. Windows took its own sweet time, but the tortoise won the race ;)
<swarley>
lolol
<swarley>
Spooner; what's wrong with swig?
<Spooner>
Not entirely sure, but I know that people who use it curse it (specifically jlnr who uses it to wrap his Gosu C++ lib for Ruby).
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<Spooner>
Give it a try though.
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<Spooner>
The main problem with stuff like rice/swig is that you don't have as much control over stuff like when C++ resources get cleaned up. I have no experience though; all I've done is write some plain C extensions that don't use much external code.
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<Spooner>
swarley : Well, I got nothing done today. Good luck with whatever path you choose!
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<yaymukund>
I was thinking of messing with constantize... is this the right approach?
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<waxjar>
yaymukund, do you want to call #to_beta on an instance of User?
<Spooner>
yaymukund : You could use if Beta.const_defined? class.name
<yaymukund>
waxjar: no, on the class itself
<Spooner>
And you'd want to put self.to_beta in App so all those classes had access to it.
<whackatre>
in your gist, 'self' isn't attributed to any class
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<Spooner>
yaymukund : Aaaand, you don't want to use class.name, now I think about it. In the context of the class it is just "name" and in the instance, you have to do "self.class.name"
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<waxjar>
you could automate it i guess, by defining a const_missing
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<yaymukund>
okay, I updated the gist a bit
<Spooner>
That won't work. If you extend App, you want to_beta to not be a method on the module (drop .self).
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<Spooner>
*(drop .self from def self.to_beta).
<waxjar>
define #to_beta as a class method on App I think?
<yaymukund>
Spooner: oops, right you are
<yaymukund>
Spooner: thanks
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<Spooner>
if Beta.const_defined? name; Beta.const_get name; else...
<yaymukund>
ooh
<yaymukund>
const_get
<Spooner>
Yeah, a class is just a constant.
<yaymukund>
doh, neat. classes all the way down
<yaymukund>
thanks!
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<yaymukund>
I was previously doing "Beta::#{name}".constantize, but that throws a name error that I have to catch. this is much cleaner
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<yaymukund>
(and probably a bit quicker too)
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<Spooner>
I'd probably also use a different name for the two uses of Beta, as namespace and bag of methods (That is, I'd put #to_beta in Beta::Methods, say), but that is just me being picky thugh.
<yaymukund>
Spooner: no I tend to agree. was simplifying those things for the gist, but I will definitely think about how to namespace this correctly
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<Spooner>
yaymukund : #constantize just uses those methods underneath, but is a bit nicer especially if you have more than one :: in the string.
<yaymukund>
is there a version of const_defined? that doesn't throw NameError?
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<Spooner>
const_defined? doesn't throw NameErrors, it is just true/false
<Spooner>
Or you mean #constantize?
<yaymukund>
no, const_defined?.. weird
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<yaymukund>
Beta.const_defined?('Beta::User') # NameError: wrong constant name Beta::User
<Spooner>
Beta.const_defined?('User') is what you want.
<Spooner>
Right, it doesn't work if you call it on one of the beta classes. Oops.
<yaymukund>
right that works, but Beta.const_defined?('fohwue') is throwing a name error. I can figure this out a little bit more.
<yaymukund>
weird
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<Spooner>
A constant MUST start with a capital.
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<yaymukund>
and cannot have '::'
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<yaymukund>
interesting
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<Spooner>
You could do: if !name['Beta'] and Beta.const_defined? name ???
<Spooner>
Though maybe name would be in a namespace anyway (just not in th eexample). if Beta.const_defined? name[/\w+$/] is the simplest, I think.
<yaymukund>
yeah
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<Spooner>
Sorry, took a while to get there. It is an odd requirement (that's my excuse!).
<yaymukund>
haha, fair enough, this is the 'deepest' ruby stuff I've done yet so I appreciate the handholding
<Spooner>
yaymukund : Oops, since you are using activesupport, you can just use if Beta.const_defined? name.demodulize
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<yaymukund>
Spooner: neat! figures Rails would have this already... hehe
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<Spooner>
I don't use Rails/activesupport, so I tend not to think of its magic stuff.
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<Spooner>
yaymukund : Right, off now. Happy hacking ;)
<yaymukund>
Spooner: ty :D
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<jason__>
I posted a comment on the ruby imap library documentation page: http://goo.gl/8ZlYR Can anyone offer any pointers on the correct procedure for escalating this to the appropriate pair of eyes such that I can get some help on this?
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<nesoi>
hello
<nesoi>
anyone here know net::smtp? I'm unclear about when I need to close the session, etc.
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<nesoi>
so with net::smtp, if I want to send a bunch of emails, do I have to do smtp.finish after each one?
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<nesoi>
another question, in case anyone is here: if I am in a do loop, can I jump to the end of that iteration and go to the next one by doing something like 'if condition next end ?
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<nesoi>
'? actually
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<FifthWall>
nesoi I beleve what's usually 'continue' in other languages is 'next' in ruby.
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<xbayrockx>
how can i download (or wget) all links on a website that match fwab*.html
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<beachandbytes>
xbayrockx try anemone
<beachandbytes>
makes it super simple
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<clocKwize>
Morning
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<JonnieCache>
mornin
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<purpleidea>
dear #ruby is there a method to do filter a hash eg: {}.select! {|k,v| k == 'x' } -> returns hash in both 1.8.7 and 1.9.3 (1.8.7 returns array)
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<burgestrand>
purpleidea: wrap the result in Hash[] and it’ll work on both 1.9 and 1.8
<burgestrand>
purpleidea: Hash[hash.select { … }]
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<moshef>
trying to install a gem, it shows as installed but when trying to do anything it doesn't recognize it.
<moshef>
any ideas?
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<uatec>
hi there
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<Uatec>
i'm writing a ruby script which references a second script (a library script i wrote)
<burgestrand>
moshef: yeah, elaborate "when trying to do anything"
<noxoc>
Also naming the gem could help.
<Uatec>
just realised, i'm not sure i care about the problem i'm asking about
<Uatec>
duhh...
<moshef>
burgestrand: never mind sorry, was a ruby problem
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<purpleidea>
burgestrand: thanks! talk about a huge change in expected behaviour :P
<eddie_>
i have to run white_similarity check on a list of words. Is there a better way than checking all of them one by one.?
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<Xeago>
what is a white_similarity check?
<eddie_>
checks if two words sounds similar
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<eddie_>
gem text has the methods
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<JonnieCache>
eddie what do you mean "check them all one by one"
<JonnieCache>
what are you currently doing?
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<eddie_>
have a list of names. I wanna check how many of them sounds like "melwin"
<eddie_>
example : edwin, calwin
<Xeago>
what is the output of the method that does white_similarity?
<eddie_>
white_similarity("melwin", word)
<eddie_>
yes
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<Xeago>
and then true or false?
<eddie_>
nope
<eddie_>
a persentage
<Xeago>
basically true or false, just you decide when to view it as either false true or maybe'ish
<eddie_>
ok
<Xeago>
why isn't looping over an array of words sufficient?
<eddie_>
if the list of words is in thousands checking one by one will be a time consuming process
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<Xeago>
this is easy to compute in parallel though
<Xeago>
chunk your array into n chunks, and do it n chunks a time
<eddie_>
parallel?? enlighten me
<Xeago>
asynchronously, using multiple threads/processes
<Xeago>
/machines
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<eddie_>
2
<eddie_>
ok
<eddie_>
How do i implement threads with ruby
<eddie_>
?>
<Xeago>
if you're going for speed, consider c
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<JonnieCache>
10.times {Thread.new do {puts "LOL CONCURRENCY!"}}
<JonnieCache>
good luck
<JonnieCache>
oops, ignore the `do`
<Xeago>
eddie_: writing good, stable, performant asynchronous code in ruby is not easy
<Xeago>
and consequently I can't help you there
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<JonnieCache>
actually ignore that link it doesnt really apply here
<eddie_>
Thanks guyd
<JonnieCache>
well dont ignore it but realise that it isnt actually relevant here
<eddie_>
Guys i have written a gem sometime back. not something great. But i would like to add a White similarity check feature to it. Check gem yasha
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<Xeago>
if you're writing something that needs speed, make it in c
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<Xeago>
my 2c
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* Xeago
is procrastinating work
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<JonnieCache>
Xeago: overhaul your development environment thats always a good one
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<kernelPanik>
hi guys! how can I show in ruby the type of an object?
<eddie_>
JonnieCache: I am gonna try em_synchrony
<kernelPanik>
I would like to know if is a string or other type ok object
<eddie_>
object.calss
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<kernelPanik>
thanks!
<JonnieCache>
eddie_: good choice. abstractions are a good idea with that stuff
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<burgestrand>
eddie_: you don’t want to go down the eventmachine route unless you really want to build your entire solution around eventmachine
<burgestrand>
eddie_: and if threads have you confused the reactor pattern is not much better, just a fair warning
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<burgestrand>
eddie_: even then this sounds like a CPU-bound operation so it might not benefit as much from threading in CRuby as one might think, but this kind of thing cannot really be predermined so I’d still give it a try
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<supe>
Going to open-source a fairly large web+mobile project in a couple of months. Should I force copyleft notice in footer? - http://answers.onstartups.com/q/43774
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<cardoni>
How would you enforce it if someone just removes it themselves?
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<supe>
cardoni: Force it in the license
<supe>
(obviously people can just "pirate" the software; but yeah)
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<dogweather>
Sounds like you're looking for a Creative Commons-like license.
<cardoni>
yeah. I hear ya. Love the idea of adding it to the project before going open; but I'm not sure requiring it is warranted
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<supe>
dogweather: Hmm, hadn't thought of CC. Usually that's for writing; i.e.: wikipedia & whatnot, right?
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<cardoni>
yeah, supe, why not do what dogweather suggests and use a CC licence of some type that works?
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<workmad3>
supe: if it's code, I'd probably go with something more like an MIT or BSD licence rather than CC
<dogweather>
supe: There seems to be a lot of functional overlap in the licenses. For sure, the GNU-style licenses address code-specific details like libraries using libraries.
<dogweather>
You could make a combo license: Say that for unpaid access, you're licensing the software under XXX with the additional restriction YYY.
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<workmad3>
CC, afaik, doesn't address any express or implied warranty that the work is 'fit for use' because it's not normally an issue for pictures or text :)
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<supe>
workmad3: hmm
<supe>
So which would you recommend for my use-case?
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<workmad3>
supe: that depends... what do you want to allow?
<dogweather>
Doesn't the Berkeley License do something like this? Enforce an attribution requirement? I forget offhand.
<supe>
Public and private forks, commercial and open-source forks
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<supe>
dogweather: Yeah
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<workmad3>
dogweather: MIT and BSD do, I believe
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<dogweather>
That's what I'd do; I'd look for the open source license that's closest to what I need. There's a lot of variety out there. Maybe the Berkeley one is what you want.
<workmad3>
attribution tends to be a requirement :)
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<workmad3>
supe: sounds like MIT or BSD would be fine
<dogweather>
And I think that the attribution requirement is exactly what bugs certain free software advocates, hence the various splits, GNU, etc.
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<workmad3>
dogweather: no, GPL is a much stricter licence
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<workmad3>
dogweather: GPL requires the release of code with distributions, and the GPL (rather than the LGPL) requires that code that is distributed with the GPLed code is also distributed
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<workmad3>
dogweather: and the AGPL requires that if the code is running on a server then the source is available...
<dogweather>
workmad3: Right, right, it's definitely strict in that way, but iirc it does not force you to acknowledge where you got it from or who made it.
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<workmad3>
dogweather: pretty sure it does
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<dogweather>
What'd be really cool would be to see a list of which licenses have been tested in court.
<workmad3>
dogweather: because the name of the copyright holder becomes part of the licence
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<supe>
mmm
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<workmad3>
supe: still, your use-case seems to basically be 'I want to put this code out here and let people use it however they want, without any real restriction, as long as they don't claim it as their own work'
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<workmad3>
supe: is that about right?
<supe>
Not exactly
<supe>
Mostly right
<supe>
But I also want people to be linked back to the original repo from any forks
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<workmad3>
hmm... that's more difficult
<supe>
They can then pay the maintainers of the original repo if they want an unbranded copy
<workmad3>
and what happens if the original repo changes location? does that make the licences of anyone using it beforehand invalid?
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<dogweather>
What state are you in? Maybe a lawyer would help. :-)
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<workmad3>
supe: yeah, it sounds like you need more legal advice than can be given here
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<JonnieCache>
dont the eff or someone like that give free legal advice on this stuff?
<workmad3>
JonnieCache: possibly? :)
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<JonnieCache>
say richard stallman 3 times while looking into a mirror and he'll appear
<supe>
^+1
<dogweather>
For sure, the EFF has very smart people working and interning for them. I trust the advice I find on their site.
* supe
can't tell if sarcasm
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<dogweather>
Hah! Being totally serious. I realize my phrasing was a little funny. I thought about applying for an internship there. (I just graduated law school.) But I've got other things cooking.
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<dogweather>
I miss some things about python's interactive interpreter. Am I just not using irb correctly, or is there something more?
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<burgestrand>
dogweather: check out pry.
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<burgestrand>
dogweather: it’s an alternative, and quite a bit more powerful. Not quite the same as pythons, but comes much closer.
<burgestrand>
I never did like pythons interpreter though; was so long ago now however.
<JonnieCache>
sime: depends what kind of object it is
<JonnieCache>
are you a js programmer? property is not a ruby term
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<sime>
Sorry! It's a LinkedIn::Mash object
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<sime>
I assumed property was a OO term
<Xeago>
sime: did you create an attribute accessor for @size? by default there is an accessor called #size that gives the malloc'd size for the object
<burgestrand>
What?
<Xeago>
malloc => something memory related size, unsure if it is actually used for mallocs
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<burgestrand>
Object.new.size # => NoMethodError
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<burgestrand>
Xeago: from where is this method?
<JonnieCache>
sime: theres a good chance you want `object[:size]`
<Xeago>
1.size
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<sime>
JonnieCache: Many thanks, that's what I'm after
<burgestrand>
Neat, looks like it’s just for numbers though?
<JonnieCache>
sime: ruby usually uses the obj[:key] style fro accessing what you might call "properties", the obj.key style is sometimes added as sugar but its not standard
<burgestrand>
Not floats either :(
<Xeago>
hmm
<sime>
JonnieCache: Cool, didn't know that chaining was sugar
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<sime>
JonnieCache: so size is a key of object?
<Xeago>
burgestrand: yea, think so, prolly has to do with VALUE in ruby's c, requiring the size to be specified as it is a value type (first 2 bits 0 iirc)
<JonnieCache>
the pakcage is just called sublimelinter i think
<Servidorv>
oh ok i just installed the beta
<Servidorv>
lol
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<Servidorv>
JonnieCache: install the new one, there is a beta version 1.7 i think it is
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<hashpuppy>
how do i define that second parameter of this method: something_and_update(foo){|x| x.a = 5}
<hashpuppy>
do i use a block here?
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<hoelzro>
hashpuppy: you mean as the person implementing something_and_update?
<hashpuppy>
yeah
<hoelzro>
so it's not really a parameter per se
<hoelzro>
any invocation may have an associated block
<hoelzro>
the block may be invoked via the yield keyword
<hoelzro>
and its presence may be tested using Kernel#block_given?
<hoelzro>
however, you may tell Ruby to convert that block into a Proc
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<hoelzro>
by prefixing the final parameter with an ampersand
<hoelzro>
ex. def method(arg1, arg1, &block)
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<hashpuppy>
"def self.dup_and_update(record, &func); record_clone = record.dup; do_something_with_func_and_record(); end" and "dup_and_update(foo){|x| x.a = 5}" what do i put for do_something_with_func_and_record()
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<hashpuppy>
do i just func.call(record_clone)?
<hoelzro>
depends on what you need to do
<hoelzro>
but that will work, I suppose
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<hoelzro>
you could also say the following in that case:
<hoelzro>
yield record_clone
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<Servidorv>
guys what is the best way to do a line by line debugg??'
<Xeago>
pry
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<Servidorv>
how can i debug line by line in pry??
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<JonnieCache>
servidorv: with pry-debugger
<JonnieCache>
its awesome
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<Servidorv>
ok ill go on the syte to find out ore about it
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<Xeago>
oh god
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<Xeago>
someone pushed binding.pry to master..
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<Servidorv>
hey
<JonnieCache>
lol
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<JonnieCache>
Xeago: fail
<Servidorv>
im tying pry
<Servidorv>
i did put binding.pry on my file
<Servidorv>
but to start my servers i use god
<Servidorv>
i stoped all the servers with god terminate
<Servidorv>
then i put ruby -r pry lib/endpoints/pages/posts.rb
<Servidorv>
but nothing comes out
<Servidorv>
it stays there with no response
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<Servidorv>
anyone know how i can start debug with pry in these case??
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<Servidorv>
anyone??
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<burgestrand>
servidorv: you are just starting a ruby interpreter, requiring pry, and then running your script
<burgestrand>
servidorv: but are you starting your script with god? you need to have a terminal attached somewhere so you can actually see what is happening
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<burgestrand>
there is also a pry-remote but I haven‘t used that myself
<Xeago>
servidorv: if you start with goliath, you could also start it with a goliath console like command
<Servidorv>
ok
<Servidorv>
yeah im using goliath
<Servidorv>
ok ill will research with goliath then
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<zlangley>
quit
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<otters>
"%20s" % "=====" produces " ======"
<otters>
I can't figure out what format specifier makes it produce "====== " instead
<otters>
oh
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<Spooner>
oh?
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<zooz>
hi guys
<Spooner>
("%-20s" in case you hadn't figured it out).
<Spooner>
Hey zooz
<otters>
yeah I just did
<otters>
I scrolled down to the "width examples" part
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<zooz>
using RDoc, how can I tell it that the following lines are actual code and I want it to be marked as code block in a generated HTML doc?
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<Spooner>
I'd guess indent 4 - Most people use Yard now, not rdoc though, which would just use the @example tag.
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<zooz>
Spooner, thanks, indent 4 seems to work
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<zooz>
at least rdoc does not try to interpret my code
<Spooner>
And that is bad because?
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<Xeago>
how about TomDoc?
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<Spooner>
Actually, that reminds me, I wrote some code to manage testing my Yard examples, but then realised there should already be some, but I couldnt' find a gem for it. Am I missing something?
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<waxjar>
Tomdoc is awesome, i can't get it to display nicely on rubydoc.info though :(
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<Spooner>
A doc format that only works locally is a bit pointless, waxjar, though I guess it just displays Tomdoc raw format on rubydoc.info?
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<waxjar>
yeah
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<Xeago>
tomdoc displays wonderfull with rocco/docco
<waxjar>
it should be possible though, with a .yardopts file. i just never figured out how :P
<james_d_h>
Spooner: Hah had no idea it was an "of course" kind of thing. I'm new to programming.
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<Spooner>
james_d_h : Oh, I see. Yeah, you can nest everything (at least I can't think of something you can't nest).
<james_d_h>
I'm building a phone tree in tropo, which allows you to use ruby in the script. and im using a while loop to allow you to go back a menu, and using a case statement to evaluage each choice.
<james_d_h>
so if i can have a while loop in each case statement that lets you repeat the choice you just made.
<james_d_h>
so thanks for that!
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<Spooner>
james_d_h Er, OK. I'd recommend opening up irb so you can just try stuff like that and/or looking through a Ruby tutorial. Lots of places to become unstuck otherwise.
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<james_d_h>
Spooner: thanks for the recommendation, http://pastebin.com/Q8KmqXGJ this is what i have so far. if you have any suggestions for improvement i would appreciate it.
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<shevy>
use pastie.org it is better :)
<james_d_h>
Spooner: After finding out I can embed a while loop in a when inside a case statement i think i can do what i want by embedding a while loop inside each when, that is basically like the while loop the whole program is running in.
<Spooner>
james_d_h : There is a lot of repeated stuff in there that could be factored out.
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<james_d_h>
Spooner: oh yeah?
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<shevy>
case event.value
<shevy>
you use that twice
<james_d_h>
shevy: right it's a case statement inside of another case statment
<shevy>
and why do you go from 5 to 7 to 9 to 6
<Spooner>
Your indentation is a bit inconsistent so it is a bit hard to follow.
<shevy>
that indent seems messed up
<shevy>
the second case is to the left of the first case
<james_d_h>
because when you choose that option, the new set of options is 5 7 9
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<shevy>
in fact, your indent is odd in other places too
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<shevy>
sometimes it is " event" and sometimes it is " event"
<james_d_h>
That shouldn't effect the running of the program correct? ruby doesn't care about white space to the best of my knowledge.
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<shevy>
yeah you can indent however you want
<james_d_h>
thanks. noted.
<Spooner>
It doesn't, but when people try to read it it helps ;)
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<shevy>
every day differently too :)
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<james_d_h>
I'm having to use their editor and it wraps lines at inconvenient places.
<Spooner>
Anyway, you don't need to wrap the hashes in {}, the last bit of a method call automatically puts things into a hash (e.g.: ask 'bleh', :choices => '0,5,7')
<Spooner>
Edit it in your favourite editor and just paste it online. Don't code in a pastie ;)
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<DebianUT>
anyone using puma?
<DebianUT>
anyone knows how can I set the request time out in puma?
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<james_d_h>
Spooner: I really like how you cleaned up the mp3 stuff by using an array!
<james_d_h>
I don't understand the break stuff though
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<Spooner>
loop is infinite, but you break out of the loop with break.
<james_d_h>
right but doesn't unless mean that 0 would be the only one that would NOT break it?
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<james_d_h>
oohhh weait
<james_d_h>
unless it evaluates to zero
<james_d_h>
== not =
<james_d_h>
still learning basic logic sorry.
<Spooner>
YEs, but you had if event.value != '0' before, so it is just the same.
<Spooner>
You can do it either way.
<Spooner>
I would recommend, perhaps, having each case in a method, since it got a bit messy when they were nested. Looked a bit spagettish.
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<james_d_h>
oh man im excited! I knew it looked wrong before!
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<Spooner>
james_d_h : And see that event = is using the result of the case, rather than before when you were writing event = a lot of times.
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<james_d_h>
Spooner: yes it's way cleaner this way. I wish I understood how to make it behave in each ase the way it does at the top level loop. The goal is to be able to choose an option and have it repeat the initial mp3 that presents the choices.
<james_d_h>
Spooner: you definately showed me a much better way to do things. thank you so much, im ashamed that i didn't see how to abstract it and clean it up to begin with.
<Spooner>
I would, as I said, put each menu into a method and have the logic separately.
<Paradox>
what are some ruby tricks you wish you knew when you were learning ruby
<james_d_h>
Spooner: I read that but don't understand how to do it, I'll read up on what methods are and how they work.
<Paradox>
i'm writing a blogpost
<Paradox>
and need some idears
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<james_d_h>
Spooner: just so i know what to try to do, would the method be comprised of a while loop with a break just like the main body of the program?
<james_d_h>
Thank you for being patient with my stupid questions.
<Spooner>
james_d_h : At least you'd realised you should use case.
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<shevy>
hehe
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<shevy>
the examples suck for about 50% of ruby projects out there :(
<Spooner>
Sadly, a little work could create a much nicer system for managing menus, but I digress ;)
<Spooner>
Yeah, because it is the javascript programmer asked to port to all languages ;)
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<shevy>
yesterday, a guy was using bioruby from the official tutorial. thing is, the tutorial had so many things that no longer worked... I filed a bug, the main author replied "Hmm, the tutorial could need an update" [Issue closed] hehe
<james_d_h>
Spooner: no not really, they had two examples in their entire forums and the examples were imo poor.
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<shevy>
you know
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<shevy>
ruby projects should start with working examples as their main test case
<JonnieCache>
james_d_h: sweating is how you get to be able to make elegant solutions
<shevy>
hehehe
<james_d_h>
JonnieCache: Thanks, I know it's true it is just so disheartning sometimes.
<shevy>
james_d_h, see, these guys here went through a lot of blood and sweat (and broken windows) already
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<james_d_h>
I try to keep that in mind.
<shevy>
that's where a man's best friend kicks in
<shevy>
beer
<Spooner>
shevy : I don't drink ;)
<james_d_h>
shevy: Proof that god loves us and wants us to be happy.
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<shevy>
Spooner waaaaah :(
<james_d_h>
ben franklin quote
<shevy>
Spooner what is your secret ingredient to stress relief?
<JonnieCache>
if youre looking at other peoples elegant code and admiring it, youre doing well. a lot of coders never look at code that itsnt theirs/their teams
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<james_d_h>
To me that would be like being a painter but never looking at another painters work. that's just silly.
<shevy>
other people's code is often not very elegant at all
<shevy>
but there are so many awful painters!
<james_d_h>
I am betting spooner smokes reefer jk
<shevy>
sometimes there are geniuses but it's rare
<james_d_h>
shevy: I think you can learn even from a bad painter, at least what not to do.
<shevy>
Spooner probably does something crazy
<shevy>
like smoking grasshoppers or something like that
<JonnieCache>
you know what i mean though, there are a lot of programmers in the corporate world who never feel the need to
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<lectrick>
Is there any way to run tests in parallel? Or to pool a bunch of test-running app instances that are frozen right before they load and run the test files?
<shevy>
do these drink beer at least?
<Spooner>
shevy : I'm a vegan too, so the grasshoppers are out too.
<JonnieCache>
especially if theyre using for-profit libs where they dont have the source code
<james_d_h>
Spooner: that's why you code so well, you are as close to a monk as can be.
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<shevy>
Spooner I am vegan too! :) (or, a bit of a vegan... I don't eat animals.. but I eat chicken eggs... so I am not really a true vegan)
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<james_d_h>
must be all the steak and beer than is holding me back :(
<Spooner>
james_d_h : I don't think you need these loops, actually, as soon as you use methods: http://pastie.org/5098899 - maybe I'm misunderstanding the logic though.
<shevy>
ohhh you dont use methods yet?
<james_d_h>
shevy: no :(
<shevy>
I see a case whatever :)
<JonnieCache>
how did he actually kill the hydra? and who was it?
<shevy>
I think with fire
<james_d_h>
The hydra? with fire.
<shevy>
the real hydra in reallife can regrow when cut in two
<james_d_h>
each stump had to be seared so two heads wouldn't sprout up in place.
<james_d_h>
Spooner: no that probably is what i want.
<shevy>
james_d_h using methods is good because you group your code into logical parts
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<JonnieCache>
heracles' second labour
<shevy>
and can re-use those things more easily lateron
<Spooner>
james_d_h : You mean you want loops or you want to just recursively call methods?
<lectrick>
JonnieCache: Thanks for the tips, will investigate!
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<james_d_h>
Spooner: I am smart enough to know, that I don't know what I want! I don't know what would work best.
<symeog>
guys the hydra was killed by Hercules…its greek mythology
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<havenn>
"Hydras mainly feed on ... Cyclops."
<james_d_h>
right and heracles is the greek name for hercules
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<shevy>
I usually do things like this (on several lines, but here on IRC I use one long line): loop { fetch_user_input; act_on_user_input} and somewhere in these two methods usually I break when the user wants to quit again (or something like that)
<symeog>
yes true
<shevy>
lol havenn
<Spooner>
james_d_h : You get '0' back when the user asks to listen again (or just sits there doing nothing)? In which case you don't need loops at all.
<symeog>
when he cut one head, 2 spawn up
<symeog>
so he use fire and burn the heads
<symeog>
all except the main one which cut and then burried
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<lectrick>
JonnieCache: Argh. I am in like the one shop that doesn't use rspec, and rspec is a dependency of parallel_tests
<JonnieCache>
bummer
<JonnieCache>
write your own? cant be that hard
<Spooner>
james_d_h : So do we get a consultancy fee? (I added a to_i since it seemed more sensible in your case: http://pastie.org/5098899)
<symeog>
he didn't dp that all alone…he had a help form one guy: Iolaos
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<symeog>
enough mythology i guess :)
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<james_d_h>
Spooner: not consulting it's for my part time business, but i will happily buy you a wheeat grass drink :)
<JonnieCache>
i love mythology but unfortunately this is the ruby channel
<shevy>
"if at first you don't succeed, hammer at your keyboard again!!!" - Maxim of the Angry Programmer
<james_d_h>
Spooner: I was assuming if i used a while loop in each case statment i could just do the same thing the while loop the case was inside of was doing, if arbitrary value = blah break loop thus replaying the menu.
<shevy>
symeog man, what is that... is that a BABY hydra??
<djbpython>
anyone use the money gem? https://gist.github.com/3932303 I'm sure i fubar'd something up, but i didnt configure anything beyond installing the gem
<symeog>
hahha…its a statue
<shevy>
cheap bastards did not want to make a huge sculpture :P
<shevy>
yeah
<Spooner>
james_d_h : I haven't seen wheatgrass around here, but I do go to a smoothy cafe to play board games (Yeah, I'm a board game geek too).
<shevy>
cheaper for tiny hydras....
<carlzulauf>
maybe its a giant hercules
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<shevy>
hehehe
<james_d_h>
Spooner: you play settlers of catan?
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<james_d_h>
I enjoy that board game a good bit.
<Spooner>
james_d_h : You don't really need a while loop. Just call the method inside itself if the appropriate number was pressed.
<shevy>
symeog where is this statue? france?
<james_d_h>
Spooner: I had no idea you could do that!
<Spooner>
james_d_h : Just like I called main_menu inside main_menu on a 0.
<shevy>
james_d_h you need a loop only if you need repeated actions :)
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<Spooner>
james_d_h : Yeah, using methods makes it considerably simpler.
<james_d_h>
shevy: good point.
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<james_d_h>
Spooner: where do i define all the sub_menu1 methods?
<james_d_h>
like in a seperate file and call as a header?
<shevy>
james_d_h usually I start writing the methods on top
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<james_d_h>
or in the same file?
<shevy>
def foo1
<shevy>
end
<shevy>
def foo2
<shevy>
end
<james_d_h>
ahh ok
<Spooner>
shevy : But there are repeated actions (potentially), which you'd need to use a loop for unless you use methods.
<shevy>
depends, same file is easier
<james_d_h>
so it's not like C
<shevy>
james_d_h well, ruby might still be happier if you defined your methods first
<james_d_h>
no need for includes per say.
<shevy>
includes are like:
<symeog>
ok i m gonna start writing my very f first lines of my own ruby code…..i feel excited….and kinda scared…all i wanna do is describe Customers, Orders and Items. any pointers ?
<shevy>
require 'foo.rb' or load 'foo.rb'
<james_d_h>
shevy: thanks!
<Spooner>
james_d_h : You could do def menu_1 then menu_1_1 and menu_1_2 etc.
<shevy>
but you have a problem that can be solved in like 30 lines of code at max, james_d_h, no real need to use more than one file
<james_d_h>
Spooner: I feel like a lightbulb has turned on in my head. Thanks so much!
<Spooner>
shevy : It depends how deep the menu structure needs to go.
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<Spooner>
But the code is mostly going to be repetative. In fact, if it were me, I'd write a system to do all this from a yaml file or a simple dsl, but I'm an idiot ;)
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<shevy>
a yaml file?
<symeog>
class Customer @Name, @Address, @Telephone end is that a valid class ? do i have to write getters and setters ?
<james_d_h>
Spooner: do you mean generate the code from the yaml file?
<james_d_h>
like lisp style macros?
<shevy>
symeog you dont need to manually define getters and setters. you can use attr
<shevy>
like
<shevy>
attr :Name
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<Spooner>
Yesh, the menu's & questions are just a big tree.
<shevy>
or rather, attr_accessor :Name to get both getter and setter
<shevy>
but please downcase that symeog
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<shevy>
@name @address @telephone
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<symeog>
aha…so class Customer attr_accessors: @name @address @telephone end is that correct ?
<Spooner>
james_d_h : Not sure if it would be like lisp macros. YAML is more like XML, in that it is just hierarchical data. A clever menu system would just walk through the data structure and ask questions appropriately.
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<Spooner>
But that is only really useful if you want to be able to easily generate a lot of different trees. Overkill for a one-use menu ;)
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<nitti>
class Customer; attr_accessor :name, :address, :telephone
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<symeog>
ok nitti and when i use the @ ?
<nitti>
use @ to designate instance variables
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<theRoUS>
what's the best way for a ruby 1.8.7 app to check its memory footprint? in an oversimplified form, i'd like to do 'okey, VM is 111000 bytes; <invoke method>; VM is now 211000 bytes' giving a massively oversimplified hint of the method result in the consumption of 100_000 bytes.
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<james_d_h>
Spooner: I will think about that, it's for a very small business that me and my wife run helping people go to college in the U.S. and getting out of africa etc to do it.
<james_d_h>
So i don't think the menu will change much.
<symeog>
so :name before is also an instance variable ? how can i refer to :name from inside my class ?
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<workmad3>
symeog: attr_accessors :name, :address <- that will define methods 'name, name=, address, address=' which will read and write @name and @address
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<symeog>
thanks workmad3
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<symeog>
do u know any good reading on ruby object oriented programming ?
<james_d_h>
I think it would be good to know how to do that just because it's cool. i assume it uses some kind of tree walk method.
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<Spooner>
Well, it wouldn't walk, which implies visiting all locations, as much as move around the tree based on the user's answers.
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<michele>
hi there
<Spooner>
I'd write you one, but I've already earned a wheatgrass, and I don't think I'll be able to collect that anyway. I suspect the airfare would cancel out the value of a free drink ;)
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<shevy>
especially the place to frequent
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<shevy>
I have no idea what happens on social media sites
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<kramutils>
heh
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<shevy>
things always change... in 1998 I was playing browser games written in perl
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<shevy>
and they were difficult. today, I dunno what it is, but the browser games seem to be immensely boring, very graphic centric only
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<JonnieCache>
what was the browser game where you had space fleets?
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<shevy>
JonnieCache hah I think there were a few... one I recall was where you had a group of players, in guilds, and some were designated ressource-hogs feeding others who were building more armies thusly
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<Spooner>
shevy : There is a low quality:noise, but there are still gems.
<shevy>
and I forgot the names of them all too :(
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<shevy>
strange is that there are not more browser games written in ruby
<shevy>
or rails respectively
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<Spooner>
Oh, that sort of browser-based games. They, I have to say, universally suck.
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<JonnieCache>
someone on HN said they were making a websockets+rails powered MUD
<JonnieCache>
someone replied saying "you're doing god's work, son" which made me laugh
<shevy>
Spooner well it depends... I found that back then it was other players who made these games very interesting. we used to have guildwars on IRC, and you could chat about reallife too. was nice... way before "social media" came to existance hehe
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<rcassidy>
is there any reasonable way to get at the require/load hierarchy at runtime?
<shevy>
ah JonnieCache
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<shevy>
rcassidy not sure... I think by default ruby follows a "first comes, first load"... I am not sure if you can easily get the full runtime... there is this debug or trace functionality though
<shevy>
some commandline switch to "ruby" ... hmm
<rcassidy>
i've seen the $0 == __FILE__ idiom but i am using IRB to drive scripts
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<shevy>
or ruby -r ... some library
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<rcassidy>
so... that idea is sort of dead, cos $0 = 'irb' and __FILE__ = "(irb)"
<shevy>
not tracer ... or perhaps? hmm
<shevy>
why not
<shevy>
can't you put that into irbrc ?
<rcassidy>
i meant the idiom i just posted above
<shevy>
yeah but I think I did that just today
<rcassidy>
i'm trying to keep track of other requires behind the scenes... meh, it's trivial, i might just do something non elegant
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<shevy>
in irbrc I do: require 'chemistry'
<shevy>
and in the main chemistry file I do:
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<shevy>
include Chemistry if $PROGRAM_NAME == 'irb'
<shevy>
and that seems to work :)
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<rcassidy>
makes sense for that case.
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<rcassidy>
in this case, i have a ruby file with a library of scripts that i can do things with via IRB - prints out some instructions to the command line when loaded
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<rcassidy>
i have another file that uses this lib but builds on top of it. and it's printing the wrong instructions now.
<rcassidy>
so in both cases IRB is at the top level
<rcassidy>
i mean,
<rcassidy>
this might jsut be a case of badly organized scripts
<rcassidy>
and by 'might' i mean 'is'
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<shevy>
hmm
<shevy>
I always have a hard time organizing things myself
<shevy>
when ruby 1.9.x came out, it suddenly showed "circular require" warnings
<shevy>
that took me many days to fix all my broken code, had to dig through so many files
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<shevy>
in 1.8.x it worked without a complaint
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<shevy>
since that day, I only try to require something (a) when I need it and (b) require it exactly where it is needed
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<rcassidy>
shevy: odd
<rcassidy>
but yeah
<rcassidy>
agreed
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<rcassidy>
shevy: i'm about to patch this with a global variable because it's stuch a dumb simple problem... but it feels like such an ugly hack
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<shevy>
hehe
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<shevy>
I do that sometimes myself
<shevy>
and I hate it :)
<shevy>
but I do it...
<dekroning>
hey shevy , still horny?
<eindoofus>
hi, I'm new to ruby and I'm getting an unexpected end error when I run this: http://pastebin.com/XYtz6mM1
<shevy>
it's like the "necessary dirty" stuff... like you need to repair a car? well, you are going to get dirty when you try to repair things
<eindoofus>
dos anyone have any ideas why?
<shevy>
dekroning nah, I had some beer, now I am semi-tired
<dekroning>
shevy: beer has the same effect on me
<rcassidy>
eindoofus: n++ isn't a thing in ruby
<rcassidy>
n += 1
<eindoofus>
oh
<eindoofus>
thanks rcassidy
<rcassidy>
np
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<eindoofus>
does ++n exist in ruby?
<hoelzro>
eindoofus: no
<hoelzro>
you need to do n += 1
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<eindoofus>
that's going to take so getting used to
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<shevy>
eindoofus you need to think in terms of objects
<rcassidy>
but at least you only have one incrementer to learn and not two :D
<shevy>
jump to this part there: "the reason from the author himself" where matz explained the reason
<chessteach>
I am writing a parser and very concerned with execution time. What is the best way to get the index of the last element? I am going to be pulling and popping elements, so I am not certain array.length - 1 will always return the correct result
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<shevy>
c = a++b would become c = a + (+b)
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<rcassidy>
chessteach: negative indices
<rcassidy>
?
<rcassidy>
a[-1] is last element
<rcassidy>
>> p "i wonder if we still have the eval bot"
<rcassidy>
dern
<chessteach>
yes, but I need the index of the last element.
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<chessteach>
rcassidy: I am storing a reference to this element in another array
<whackatre>
eval bot?
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<eindoofus>
I like that stackoverflow post. I forgot about the whole "everything is an object" thing in ruby. The lack of ++ or -- makes more sense in that context.
<Spooner>
chessteach : a.length - 1 does it perfectly well, though obviously if you are changing the length, that will get out of date. Not sure what the issue is.
<Spooner>
chessteach : #length is always correct when you call it. It doesn't lag behind changes that have been made to the array or anything ;)
<chessteach>
Spooner: I am under the impression this will not work: array = [1,2,3,4]; array.delete_at(2); array.length - 1..... Or will that work as expected?
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<Spooner>
chessteach : Yeah, it is updated when the array changes length.
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<Spooner>
chessteach : Just check that code in irb if you doubt it!
<chessteach>
Spooner: oh... ok cool. I just did. Thanks
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<Spooner>
chessteach : Though as people are saying, you can just use array[-1] or array.last to get the last element.
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<rcassidy>
or, even,
<chessteach>
Spooner: I guess that cause another problem... if i start saving indexes and use delete_at, they will no longer be correct
<rcassidy>
if a is your array and you know of no duplicates,
<rcassidy>
a.index(a[-1]) will get you the index of the last element.
<chessteach>
Spooner: I will find another way then....
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<rcassidy>
and there are easy ways to check no-duplicates, too,
<Spooner>
eindoofus : Even more so, we'd use 400000.times do |n| or (0...400000).each do |n| rather than using a while. Genenerally, if you are += 1 in a loop, you aren't doing it right ;)
<rcassidy>
though i don't know what data you are dealing with
<Spooner>
rcassidy : Yeah, but that is just a pointlessly convoluted way to get it, so don't worry about special cases ;)
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<rcassidy>
well, what's the non-pointlessly convoluted way, again? :p
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<Spooner>
length - 1
<rcassidy>
ha, word.
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<eindoofus>
Spooner: is that also faster or is it done that way just for syntactical reasons?
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<Spooner>
eindoofus : It is actually slower, but it is good Ruby style.
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<eindoofus>
Spooner: is there any way to measure the time of a loop in ruby?
<Spooner>
There is a 'benchmark' suite, but yeah, that suggestion is thesimple way.
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<eindoofus>
cool, I'll give that a try
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<Spooner>
eindoofus : Though your code is actually simpler done without a loop, but I assume that code is not "real" ;)
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<Spooner>
sum = 2 + (400000 / 2) * 3
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<eindoofus>
oh nice
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<Nowaker>
guys, having a problem. bundle install is green (Using ruby-units (1.4.2) -> Your bundle is complete!), bundle show is red (Could not find ruby-units-1.4.2 in any of the sources). any ideas?
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<rcassidy>
Nowaker: not sure if it's active, but there is a #bundler channel according to their github page
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<DigitalisAkujin>
Trying to fix a website. Getting an error
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<DigitalisAkujin>
Unexpected end-of-file detected
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<DigitalisAkujin>
it's happening right in ruby 1.9.2
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<DigitalisAkujin>
can anyone tell me how i can downgrade the version the site is using?
<DigitalisAkujin>
rvm use doesn't work correctly
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<DigitalisAkujin>
well it works for changing the version in the shell
<DigitalisAkujin>
but that's about it
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<evotopid>
maybe you could uninstall the to new version...
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<DigitalisAkujin>
I think the error is happening because i did bundle install with 1.9.3 set in shell but with the website expecting 1.9.2-p290
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<DigitalisAkujin>
so i'm reinstalling 1.9.2-p290 and gonna re-run bundle install
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<DigitalisAkujin>
>.> well that still didn't work
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<DigitalisAkujin>
lemme know if anyone knows how to fix this
<TTilus>
"Q: How should characters (particularly composite characters) be counted, for the purposes of length, substrings, positions in a string, etc.?" explains the issue pretty well
<sent-hil>
:+ accepts only one param, i tried passing [2,3] instead, obviously that didn't work
<reactormonk>
sent-hil, nah, you have to reduce for that
<sent-hil>
reactormonk: i don't know if it'll be sum or multi up front
<TTilus>
1.send(:+, 2).send(:+, 3)
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<TTilus>
or [1,2,3].reduce(:+) as reactormonk already pointed out
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<reactormonk>
TTilus, is there any difference between the two?
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<TTilus>
reactormonk: difference in what sense?
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<TTilus>
they evaluate to the same value
<TTilus>
former does not allocate an Array
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<reactormonk>
TTilus, in the sense that the same methods are called
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<TTilus>
yes, both call Fixnum#+ twice
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<theRoUS>
ruby 1.8.7 is there a way to query ObjectSpace (as it were) for 'how much memory is allocated to instances of class Foo?'
<Mon_Ouie>
I don't think so. Anyway, it would be "how much memory does this instance of Foo take?" — because it depends on the amount of ivars alone (well, and the presence of a singleton class I guess), and that doesn't depend on the class
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<theRoUS>
TTilus: i haven't been able to get memprof to work, either with base fedora ruby 1.8.7 nor with rvm ruby 1.8.7
<bennyzr>
hello
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<TTilus>
theRoUS: memprof tracks object allocations, thats not the same thing, not even close, but might still be usefull for finding leaks
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<TTilus>
theRoUS: oh, whats the problem?
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<theRoUS>
Mon_Ouie: meh. well, ObjectSpace could let me locate all the instances of each class. now if there were only a way to find out the allocation specifically assigned to an instance
<theRoUS>
TTilus: with memprof? or what i'm trying to solve?
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<TTilus>
theRoUS: both :)
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<Mon_Ouie>
ObjectSpace does allow you to find all the instances of a class
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<theRoUS>
Mon_Ouie: correct. now if only there were a way to ask the interpreter for allocations..
<Mon_Ouie>
Oh, I mistunderstood what you meant
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<theRoUS>
TTilus: the problem is i'm running some massive iterations that are getting OOMkilled. i'm trying to find out where the memory is going to tune it down.
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<TTilus>
theRoUS: you could repeatedly ObjectSpace.each_object { |o| ... } and try to diff object_ids
<TTilus>
theRoUS: but thats really something memprof was built to do
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<theRoUS>
TTilus: when i tried memprof on bare fedora ruby, it complained about lack of symbols. when i tried it with rvm'd ruby 1.8.7, it said "ruby: Inline add_freelist tramp insertion failed! Only inserted 0 tramps."
<TTilus>
theRoUS: i'd put the effort in getting memprof work the magic for you
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<TTilus>
theRoUS: gem install went fine both times?
<theRoUS>
it appeared to do so, yes
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<TTilus>
you could prolly run your stuff with jruby and use visualvm or alike to profile it
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<bennyzr>
can anybody help on a modelling question?
<bennyzr>
ok. I have 2 models currently related with a has_many :as and a belongs_to. I need to replace the belongs_to with belongs to many.
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<bennyzr>
Would adding a HABTM to an existing has_many :as be bad modelling? Is there a better way?
<TTilus>
theRoUS: theres apparently some makefile magic you can do to work around the missing symbols complaint
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<theRoUS>
TTilus: no, i didn't see that page
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<TTilus>
bennyzr: certainly sounds convoluted
<TTilus>
bennyzr: just give us the case
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<bennyzr>
a merchant has users as an organization. users also are related to the merchant with different roles. e.g. salesperson and/or manager.
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<TTilus>
bennyzr: also #RubyOnRails might be better suited if you are in context of activerecord
<bennyzr>
ok. let me try that channel then.
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<Eiam>
I'm so happy, I interviewed an intern and asked him fizzbuzz
<Eiam>
and he nailed it
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<lectrick>
Is there any way to pass an implicit block by somehow yielding it to another method without encapsulating it in a &block variable?
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<TTilus>
lectrick: only with super
<TTilus>
lectrick: afaik
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<lectrick>
like instead of doing def method(&block); another_method(&block); end I want to do something like def method; another_method(&yield); end
<Sou|cutter>
lectrick: why not use &block ?
<lectrick>
because &block is expensive
<adaro>
i have a huber in ruby my number = 10 and i want to append this number to a byte array as 0x0A how do i do that ?
<TTilus>
lectrick: would using explicit lambda be less expensive?
<lectrick>
there's a lot of ruby optimization around implicit block handling and as soon as you grab it with a &blockvariable you create a whole bunch of stack and context machinery that you may not need which costs CPU
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<Sou|cutter>
lectrick: are you sure this is an optimization that matters in your case?
<TTilus>
lectrick: im afraid your only hope is the case where another_method is super
<adaro>
using << seams to work but then i am actually mutating whatever is in front of the << it seems
<lectrick>
TTilus: hmmm
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<adaro>
if i use + then i get can't convert Fixnum into String
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<lectrick>
TTilus: And I don't suppose I could insert another class in the class hierarchy between the class I'm monkeypatching and its parent class which contains the original method and acts as super?
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<Scriptwriter>
Hey all, I'm trying to implement an equivalent to "tail -f" in ruby on Windows and so far I'm having no luck. Any ideas? (I've tried both File::Tail and FileWatch::Tail and neither prints the content added to the file.)
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<TTilus>
lectrick: you can, but thats prolly gonna look pretty convoluted, so youd better have a good explanation when somebody comes asking later on :)
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<lectrick>
lol ok
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<mib_mib>
has anyone used 'dalli' memcached gem? I'm having trouble because it seems to recursively encode my stuff as JSON when it puts it in the cache, but it doesn't seem to recursively decode the json
<TTilus>
lectrick: monkeypatching alone is bad enough ;)
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<Scriptwriter>
I'd just parse the output of "tail -f" if (1) I knew how in Ruby (I'm still learning) and (2) if Windows had the tail command, which it doesn't.
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<TTilus>
Scriptwriter: how about gc thefile | select -last 10
<Spooner>
adaro : << generally means append, so yes, it mutates. += doesn't mutate, but + doesn't automatically turn things into strings. You probably want: new_str = original_str + extra.to_s
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<Scriptwriter>
TTilus, the "-f" says to keep printing lines as they're added to the file, so the select -last 10 would work for regular tail but not for tail -f
<Spooner>
adaro Or new_str = "#{original_str}#{extra}"
<adaro>
Spooner: no because i want it to be a byte array
<Scriptwriter>
Basically I'm trying to parse a log file as it's being written to
<adaro>
for some reason ruby thinks it's a string
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<adaro>
i basically want to do SecureRandom.random_bytes(8) << mynumber_as_a_byte
<Spooner>
"if i use + then i get can't convert Fixnum into String" tended to convince me that you were wortking with strings intentionally.
<adaro>
to get a result that does not mutate the bytes i get from secure random
<adaro>
and creates a new byte array
<Scriptwriter>
I can take a look at pscx to see if someone has written a fail -f workalike, but I want to parse the output in Ruby. (Part of this is an excuse to learn how to do actual things in Ruby other than print out lines about chunky bacon and stuff :-) )
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<Spooner>
Yeah, Ruby strings are not synonymous with character arrays.
<kzar>
I know how to run ruby code in a child process but is there a way to run it so that changes to modules in the child process effect the modules in the parent?
<adaro>
Spooner: so how do i get what i want :p i am kind of lost without a typesystem
<theRoUS>
TTilus: i'll try that, but memprof isn't complaining about symbols; it's blowing up differently
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<Spooner>
adaro : SecureRandom.random_bytes gives you a string, so you do want to append to it as a string, however I think what you want is SecureRandom.random_bytes + n.chr (where n is an integer)
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<adaro>
Spooner: so a method called random_*BYTES* gives me a string? :)
<Spooner>
adaro : It is a bit more complex than that. A String, ultimately, is just a block of data, but the way it is manipulated in Ruby is more complex than just treating it like an array of bytes. For example, in a UTF16 string, each 2 bytes represent a single character.
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<adaro>
Spooner: yeah so what encoding does it use ?
<adaro>
wasn't ruby notorious for not supporting unicode
<theRoUS>
TTilus: and this is on linux, not osx
<Spooner>
adaro Whichever encoding you want it to. That was the old version of Ruby.
<theRoUS>
adaro: yes
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<adaro>
Spooner: ok say i call Base64.encode64 on this byte array which is really a string
<adaro>
then what encoding does encode64 apply?
<adaro>
e.g. do i get 1 or two bytes for an e with an apostroph
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<Scriptwriter>
Ah well, off to go see if I can get my project going. Thanks for the respohnse TTilus.
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<Spooner>
Though that is probably more the base64 spreading the characters out, rather than the characters being larger in the original string.
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<rubious>
How can I attempt to see if an object is going to respond to the spaceship operator? a.try(<=>(b))?
<Spooner>
rubious a.respond_to? :"<=>"
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<Spooner>
Oh, you don't need the quotes, but anyway.
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<rubious>
Why does the spaceship need to be in quoets?
<rubious>
And nevermind.
<rubious>
lol
<rubious>
Thanks Spooner
<Spooner>
I just forget which things need quotes, so I add them if I'm not sure and can't be bothered testing in irb ;)
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<jbw>
Testing!
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<dmilith>
any sane ruby developer here?
<dmilith>
I don't mean ruby user, but developer.
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<dmilith>
or at least somebody who knows ruby core mechanism.. I'm trying to compile ruby with custom prefix, and all is fine until I'm trying to use "gem".. which leads to psych.so: Undefined symbol "yaml_get_version"
<dmilith>
but ofcourse nm shows that symbol in libyaml library
<dmilith>
and it's in LD_LIBRARY_PATH
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<dmilith>
its' ruby 1.9.3 latest p286, on amd64 freebsd 9
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<dmilith>
bad luck
<KarlHungus>
dmilith: building now
<dmilith>
first site don't work, second isn't useful
<KarlHungus>
will test in a sec. what steps do you have that i can reproduce your problems with?
<dmilith>
use custom prefix
<KarlHungus>
naturally.
<dmilith>
--prefix=/soome/path
<dmilith>
and don't have libyaml in any default accessed directory
<KarlHungus>
ok
<dmilith>
I think it's looking for this library in default paths like /usr/lib and /usr/local/lib
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<dmilith>
hence it's not linked into psych.so
<KarlHungus>
jenkins is building that version now. once its build and i have it in a test users PATH, how should i confirm its broken?
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<shadoi>
dmilith: export CPPFLAGS=-L/my/yaml/include and export LDFLAGS=-L/my/yaml/lib before the make of Ruby
<dmilith>
try gem install bundler
<KarlHungus>
dmilith: ok
<dmilith>
or irb and try require 'yaml'
<KarlHungus>
bundler and rake get installed into the package by default, so jenkins should error
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<dmilith>
shadoi: I'm exporting prefix
<shadoi>
seems psych isn't using it
<dmilith>
I'm doing build of every requirement into ruby prefix
<dmilith>
so everything is placed in /Users/500/Apps/Ruby/lib
<dmilith>
and /include
<dmilith>
and so on
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<dmilith>
common libraries comes only from fbsd9.x base system.
<dmilith>
it worked with p194
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<dmilith>
it works with everything else. I just need to set LD_LIBRARY_PATH to /Users/500/Apps/Ruby/lib and all libraries are seen to executables. No problems at all
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<KarlHungus>
its mostly just leveraging sstephenson ruby-build tool
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<KarlHungus>
if you want a fully embedded build, use my omnibus fork. i'm certain it will work with minor tweaking. i just don't build ruby for my developers that way, so i have no reason to go make it work. ;) that jenkins script is for self-service ruby builds during deployment
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<dmilith>
shadoi: yea, it's first time I'm trying that --opt-dir
<dmilith>
but same result
<shadoi>
--with-opt-dir not —opt-dir right?
<dmilith>
--with-opt-dir=
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<dmilith>
set to same as --prefix
<dmilith>
as in*
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<shadoi>
ah well, I guess you'll have to set specific -I and -L opts then
<shadoi>
like in the omnibus build he linked
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<dmilith>
allright.. I try this one now
<dmilith>
but anyway.. this --with-opt-dir might also help later with my custom path to libraries for gem
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<dmilith>
so it's probably very handy
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<nesoi>
hello
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<nesoi>
what's the proper syntax for getting the current time minus some days?
<dmilith>
with active support you can use Date - 1.day f.e.
<nesoi>
is it time.now - (theNumberOfSeconds) or what?
<nesoi>
I want to compare the resulting value to a time.utc
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<nesoi>
for a database query
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<shadoi>
(Time.now - 18400).utc
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<nesoi>
where("dateTime < ?", myTime")
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<nesoi>
thanks shadoi (and dmilith)
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<eph3meral>
is anyone else getting this: "Error Bundler::HTTPError during request to dependency API" during bundle install?
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<dmilith>
shadoi: KarlHungus: same thing.
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<shadoi>
lame
<Poapfel>
eph3meral: well rubygems.org had some issues with their dependency API in the past days
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<dmilith>
I'll still try more combinations
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<eph3meral>
Poapfel: k
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<dmilith>
how to enable history in irb? :o
<dmilith>
I tried with readline deps.. and curses deps
<dmilith>
no reasult
<dmilith>
result*
<dmilith>
strange
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<Spooner>
dmilith : Just use pry (gem) instead. Irb is pretty basic.
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<dmilith>
install gem and no conf? just works?
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<Spooner>
Yeah, you just install the gem and then start it with "pry" command. There are a lot of plugins for it for special magic though, but you can build up to that.
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<Spooner>
Though to tell the truth, I have always had a history with irb too. Just suggesting that pry might be better at enforcing one *shrugs*
<dmilith>
irb(main):001:0> require 'yaml'
<dmilith>
=> true
<dmilith>
so the verdict is…
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<dmilith>
ruby 1.9.3-p286 is messed up
<dmilith>
I need to give it explicit -lLIB
<dmilith>
for almost each library ;o
<dmilith>
now zlib.so: Undefined symbol "inflateReset" - /Users/500/Apps/Ruby/lib/ruby/1.9.1/x86_64-freebsd9.0/zlib.so
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<Spooner>
You are getting unusual problems by install it in an unusual way. Surprised?
<dmilith>
yea.
<dmilith>
and no
<dmilith>
it's ruby..
<dmilith>
I didn't resigned from ruby totally without a reasons
<dmilith>
Spooner: you may call it unusual.. I'll call it "right way".
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<Spooner>
As opposed to the way everyone else does it? Does sound a bit contrary to me.
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<dmilith>
it worked in 1.9.3-p194
<dmilith>
Spooner: "everyone" uses windows.. that's not reason to use it?
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<Spooner>
Ah, sorry, I didn't realise you were talking only about the newest patch version.
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<dmilith>
I'm on my way of investigating things.. nothing i'm sure about, but will try to check all possibilities
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<dmilith>
the linker problems started with latest build
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<dmilith>
I'm just curious about pthread thing. In 1.8.x the --enable-pthread caused ruby to be slow bitch in comparison with --disable-pthread. How about 1.9?
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<dmilith>
I didn't watch (r)evolution of ruby code, maybe some of You knows anything related to this problem?
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<Spooner>
Ruby 1.9 doesn't use green threads any more, so not sure it is relevant (CRuby does use a GIL, so you can't run concurrently anyway).
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<dmilith>
yarv still uses GIL?
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<Spooner>
It does, yes.
<dmilith>
so it's thread unsafe still right?
<dmilith>
I see
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<Spooner>
That would be the reason, I would guess.
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<dmilith>
pry
<dmilith>
You're running a version of ruby with no Readline support
<dmilith>
AFAIK the readline functionality was replaced by curses?
<dmilith>
Spooner: that might explain everything.. so pthreads should be ok now. Thanks
<dmilith>
shadoi: especially thank you for this --opt-dir idea. It solves problem of looking for non default location of libraries (solves f.e. nokogiri - which was unable to auto find required libraries before)
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<dmilith>
now it's just flawless install
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<shadoi>
cool
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