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<dFire>
solid.
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<eggman2001>
can someone interpret this code for me? I'm confused by the receiver of the conditional - when Yelp::ResponseFormat::PICKLE: params[:output] = 'pickle'
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<hagabaka>
eggman2001, it's probably in a case statement, and if so, the condition is actually Yelp::ResponseFromat::PICKLE === object_after_case
<eggman2001>
hagabaka: thanks. yes, it is. however, i've given up on that library for other reasons :-p
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<lianj>
ruby -e 'case true; when true: p :foo; end' doesn't work on 1.9 anw
<robgleeson>
yep, ':' isn't valid syntax anymore
<lianj>
thank god ;)
<eggman2001>
I see. I also saw that the yelp gem doesn't support the new yelp api anyway
<lianj>
hihi
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<Gekz>
so
<Gekz>
what's a good robust ORM for ruby?
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<heftig>
activerecord.
<heftig>
datamapper.
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<sj26>
Sequel
<savage->
pstore :-)
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<Gekz>
I'm gonna try to metaprogram me some automated XML to SQL conversions
<Gekz>
using RelaxNG as the middle ground :D
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<adrienk>
Hey, I have a quick question. If a variable is set to some value, say @var = 10 and is later changed else where, how do I check if @var has been changed? (with out knowing where else it has been changed)?
<burgestrand1>
adrienk: there’s no sane way to do that if you assign @var directly; if you use a setter method for it, howver, you can implement your own dirty tracking
<adrienk>
what if it was a :var thus a attr_accessor :var which was set to 0 (@var = 0) then changeed later on. does that help?
<adrienk>
would it be easier?
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<erikh>
copy it and compare it to the cached value?
<adrienk>
how do you do that in ruby?
<erikh>
either that or maintain a state
<erikh>
well, if it's a fixnum or symbol, foo = bar = <value>
<burgestrand1>
oh, nvm me, was under the assumption you did not know the initial value
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<erikh>
if it's a proper object, bar = <value>; foo = bar.dup
<erikh>
that's not a deep clone mind you, but it's good enough for horseshoes
<adrienk>
erikh I am so lost in what your saying
<erikh>
ok, you need to step back then
<erikh>
and pick up a programming book and read it.
<adrienk>
your essentially saying to dup @var and compare it to the attr_accesssor :var?
<adrienk>
oh wait no i get it
<adrienk>
>_>
<adrienk>
so dumb
<adrienk>
bar = val, thus foo = bar.dup, thus if bar == foo - true, else, false
<Gekz>
so which framework should I use for webapps?
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<adrienk>
um one last question - what if: you cannot dup a fix num? is there another way around it?
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<adrienk>
shit i read that wrong its a reader not accessor
<bnagy>
b=a.dup rescue a # this is all awful
<adrienk>
My god I need to pay attention to what im doing sometimes >_>
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<bnagy>
anyone got a fast / good suggestion for checking if a string contains any chars that aren't 7 bit ascii?
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<erikh>
should just be able to & the byte value by 0x1000000
<erikh>
anyhow, bed
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<davidw>
anyone know if it's possible, with nokogiri to do something like parse("<p></p <p></p>") ? Everything seems to want to work with one root node, whereas I want to parse some stuff and then add it in as a child node
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<rue>
“Some stuff”
<rue>
?
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<injekt>
davidw: cross posting can be pretty frustrating for people helping you btw
<davidw>
injekt, hrm?
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<davidw>
rue, some stuff like what I wrote above
<davidw>
"<p></p> <p></p>"
<injekt>
davidw: well, when you asked your question here, you could have pointed people to the question you already asked on Stack Overflow
<davidw>
injekt, I asked here first
<injekt>
then update people here
<davidw>
'here' had looked pretty dead ... I saw some tumbleweeds rolling by
<Asher>
i guess not ruby-style tho like we don't have +=
<tobiasvl>
Asher: |= ?
<davidw>
Gekz, yeah, but it does not work like I'd hoped
<jarib>
Asher: ruby has +=
<Asher>
tobiasvl- |= does that?
<Asher>
oh i duno why i was thnking it didn't have that.. ah well
<tobiasvl>
Asher: not exactly, it's not tertiary
<Asher>
yea
<tobiasvl>
but
<Gekz>
ruby even has ||=
<tobiasvl>
yeah
<Asher>
right
<Asher>
that's what was making me think about ?=
<tobiasvl>
but in what situation would you need ?= without being able to use |= or ||=
<Asher>
var = result_from_some_function() ; var ? var : false
<Asher>
maybe you can show me how to do that with
<Asher>
|=
<tobiasvl>
but ... that's valid ruby code
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<tobiasvl>
what you just wrote
<Asher>
yes i'm aware
<Asher>
so is the code for which ||= is a shorthand
<tobiasvl>
i guess i don't really understand what it is you really want here
<Asher>
||= is equivalent to var = value unless var
<Asher>
i want a tertiary evaluator that will assign teh evaluated variable the resulting value
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<bnagy>
example code?
<Asher>
er.. didn't i just give that?
<tobiasvl>
no, your example code already works
<bnagy>
I mean example code using your imaginary thing
<Asher>
var = result_from_some_function() ; var ? var : var = false
<bnagy>
cause I have nfi what you're talking about wither :)
<Asher>
var ?= var : false
<Asher>
actually teh example code requires parens
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<Asher>
var = result_from_some_function() ; var ? var : ( var = false )
<Asher>
var = result_from_some_function() ; var ?= var : false
<rippa>
isn't that the same as ||= ?
<Asher>
var ||= false?
<rippa>
yes
<Asher>
yeah in this case i suppose so
<Asher>
so at least that's a nicer oslution for my code
<Asher>
thanks
<Asher>
but not in every case
<rippa>
still not much of a saving
<rippa>
var = var ? var2 : var3
<rippa>
var ?= var2 : var3
<Asher>
way prettier
<rippa>
also ambigous syntax
<Asher>
what's ambiguous about it
<bnagy>
-1 vote for 'prettier', imho
<Asher>
really?
<tobiasvl>
"var ? var : ( var = false )" can be rewritten by just moving the assignment too: "var = var ? var : false"
<tobiasvl>
(not prettier, but correct syntax)
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<Asher>
tobiasvl- right rippa just pointed that out too
<rippa>
: is already used for symbols and hashes
<Asher>
it is prettier, a bit
<Asher>
: is used for tertiary already too
<Asher>
this would be an extension of the tertiary operator
<Asher>
it's not like i think ruby _has_ to have this or anything… just seemed like it'd be nice
<mitchty>
or, you could do var=(x=foo) ? x : false but its basically ||= and depending on truthiness too
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<sj26>
var = var ? var2 : var3 == "var &&= var2; var ||= var3" ?
<sj26>
it's interesting syntax, but tertiaries are generally discouraged
<mitchty>
I'd just honestly wrap the function with another that just returns the function or false, would be more straightforward
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<Asher>
this is the function that is doing the wrapping :)
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<kalleth>
Asher: you mean ternary?
<Asher>
ha yes thanks
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<jacobwg>
Does anyone know of a way to add markup to plain text with a regex? I need the regex to match a particular string and replace it with a dynamically computed replacement.
<jacobwg>
I've been trying to do it with gsub and a block, but no luck so far
<bougyman>
jacobwg: sure
<bougyman>
jacobwg: show and example
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<workmad3>
shevy: .each doesn't give the requested output :P
<imperator>
shevy, don't think that gets him what he wants
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<workmad3>
it looks like a homework assignment to me... get the first, then 2nd and 3rd, then 4th, 5th and 6th, etc...
<shevy>
ah
<shevy>
weird actually
<shevy>
I dont think I ever had the need to do that
<shevy>
:)
<imperator>
which is why i think it's a homework assignment :)
<kyrylo>
Actually, it's not. I think I should use inject, but I don't understand, how to apply it.
<shevy>
kyrylo yeah but you aren't saying why this output has to be as odd as is
<shevy>
you can also keep track with a counter
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<shevy>
hmm
<kyrylo>
It doesn't matter. I just showed you an abstract example of what I need.
<imperator>
0.upto(2){ |n| p a[n,n+1] }
<shevy>
can anyone recall a require like ... require 'foo bar' ? with a ' ' in it?
<imperator>
or something
<imperator>
shevy, nope
<shevy>
ok
<kyrylo>
imperator, thanks. I think, it could be done better, but anyway, thank you very much.
<apeiros_>
shevy: since it's just a path, I'd assume it's possible. I wouldn't do it, though.
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<workmad3>
imperator, kyrylo: you could also use .shift
<workmad3>
(1..4).to_a.map{|i| source.shift(i) } for example
<imperator>
what workmad3 said
<workmad3>
that's more destructive than imperator's solution though... you may want to .dup the source beforehand :)
<kyrylo>
dup or clone? ;)
<workmad3>
kyrylo: I believe they're just aliases ;)
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<rue>
No, there's a difference
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<rue>
#dup is like a new instance of class, with data copied over. #clone clones internal state, too
<deryl>
plus clones are locked if the cloned object is frozen, dup does not
<apeiros_>
clone also copies singleton methods and frozen state
<apeiros_>
dup doesn't
<workmad3>
good to know :)
<apeiros_>
I wish there was something that copied singleton methods but not frozen state…
<workmad3>
deryl: does anyone ever freeze their objects? :P
<workmad3>
(other than for debugging)
<apeiros_>
also, if you want to implement #dup/#clone for your class - you most likely should implement #initialize_copy instead (it's invoked by ruby upon dup/clone)
<deryl>
:shrug: but its a distinction one should probably know
<robgleeson>
the documentation for #dup & #clone is awful, so you could be forgiven for mistaking the two
<rue>
That's what I mean by internal state :P
* apeiros_
loves Class#clone, it's a nice way to protect core stuff in testing/stubbing/mocking/…
<apeiros_>
too sad there's no Object#replace :(
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<ddfreyne>
oh, I did not know about that
* jaimef
looks for cleaner foo = File.open("/home/jaimef/xen.conf","r") {|f| f.each_line {|l| puts "line:#{l.split[0]}" if l.match("smurf12") } }
<ddfreyne>
workmad3: I freeze regularly
<apeiros_>
puts File.read(path).grep(/smurf12/)
<robgleeson>
ice man
<apeiros_>
might use readlines instead of read
<rue>
jaimef: File.readlines / each_line
<ddfreyne>
workmad3: for example, for nanoc I freeze all data before compilation, because immutability gives me certain advantages (knowing that something can’t have changed is a big advantage)
<apeiros_>
oh, in 1.9, you probably even must (since String is no longer Enumerable)
<rue>
jaimef: Then #grep for the match
<rue>
Or is that .foreach or something weird
* rue
is struggling to build some roobees in XCode hell
<jaimef>
got it. grep is sufficient
* ddfreyne
’s laptop is too slow to run xcode on lion :(
<rue>
I just splurged on an MBA, old MB's power got flaky
<ddfreyne>
I bought a new MBP but it had an azerty keyboard, so I traded it in for a qwerty one, but that was last week… today I got a notice that the new one is ready for picking up!
<rue>
Wtf… XCode 4.1 finishes installation, but there's no /Developer, no Install XCode :(
<deryl>
thats weird
<deryl>
no $HOME/Developer? (never seen it default to homedir though.. ever)
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<rue>
Nope
<deryl>
rue: no insult intended here, you *are* looking from console right? ls -d /Developer and not in Finder?
<rue>
What's a Finder?
<deryl>
don't kill me because when I first installed Xcode (new to apple platform) i didnt' know that /Development did not show up normally through Finder
<deryl>
rue: OS X's Explorer basically
<rue>
Sarcasm :P
<ddfreyne>
/Developer should show up
<deryl>
missed it by that much :)
<rue>
But, no, it's not there. I've got hidden files on anyway, so it would show up in Finder too, if I used it
<rue>
Lessee if the Console has anything
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<rue>
Installed “Xcode Install Assistant”
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<coolfool>
hi, I'm new to help via IRC so please excuse any noob-style mistakes I make.
<coolfool>
Basically I'm new to ruby but am writing an http proxy using it and need some help regarding it's behaviour
<coolfool>
Is it better to explain my problem here or somewhere else?
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<Spooner>
coolfool: This is as good a place as any, I think.
<deryl>
rue: only thing I can suggest is running sudo \$PATH_TO/Developer/Library/uninstall-devtools –mode=all and trying again. do you have the dmg or are you trying through the appstore?
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<kyrylo>
workmad3, hey, fwiw, I've found (probably) better solution: a = ary.dup; a.map.with_index { |e, i| a.shift(i+1) }
<coolfool>
Ok, well in a nutshell, I am using Eventmachine to spawn an http server for me. When I receive a message I check the contents of the message for some specific XML. I parse the XML, modify it a little and then forward it on.
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<deryl>
rue ok
<coolfool>
The problem arises when libxml raises an exception. I want to catch the exception so that I can send a meaningful response back to the client. However, the exception seems to be uncatchable in the sense that my Rescue block never seems to be called
<coolfool>
I have tried catching exceptions in a separate little program which doesn't use Eventmachine and it worked perfectly which tells me that Eventmachine is somehow interupting the exception process.
<canton7>
coolfool, where are you catching the exception? (or attempting to catch it)
<rue>
coolfool: Or you're rescuing the wrong thing?
<workmad3>
kyrylo: that is probably a bad idea... .shift modifies the array, which could cause issues if you're in the middle of iterating over it
<manveru>
coolfool: well, you have to wrap the point where you call nokogiri
<manveru>
you cannot rescue things that will never return to the point you called them from
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<rue>
Aha.
<rue>
deryl &c.: Jan 3 22:43:35 pounce installd[1057]: PackageKit: Skipping component "com.apple.dt.InstallXcode.Lion" (4.1.0-49.0.0-49000000000000-*) because the version 4.2.1-70.0.0-*-* is already installed at /Applications/Install Xcode.app.
<rue>
(It isn't, anymore, so the hunt continues. I bet there's a fucking plist somewhere saying that(
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<coolfool>
manveru: how do I know it will never return to the exception point? Is that because of eventmachine and how it schedules?
<manveru>
coolfool: well, let's see
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<coolfool>
That would raise a runtimeerror exception
<apeiros_>
depending on the definition of "work"
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<coolfool>
I see
<coolfool>
so in that example the catch would have to go round the foo.call itself
<apeiros_>
rescue. catch exists in ruby and has a different meaning.
<apeiros_>
(same for raise vs. throw)
<coolfool>
Ok, but I am not sure I understand how this example applies to what I am doing. In my code the libxml parsing function is being called in a proc block and the begin/resuce wraps all the XML blocks.
<coolfool>
Sorry, not blocks, I mean function calls
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<coolfool>
I suppose what you say is occurring actually is occuring but in not such an obvious way.
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<rue>
Need moar code.
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<rue>
Otherwise it's not wise
<coolfool>
Ok I'll just get a pastie link
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<coolfool>
I have tried to reduce it to the bare problem
<RickHull>
your rescue block may be executed, and it returns the value of the last expression
<RickHull>
in your case, it's an assignment, resp.content_length = '0'
<RickHull>
you might add some debug logging inside the rescue block
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<deryl>
rue: niice :)
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<coolfool>
where does the flow go after the rescue block? My final goal of asking these questions is to get my proxy to always respond to the client but the moment it doesn't (for a good reason or for a silly one).
<RickHull>
coolfool: should the rescue block get executed, it looks like it would be the last expression of your proc
<RickHull>
L65 - callback = proc { |res| # I notice you don't ever do anything with res
<RickHull>
i am bad with procs and callbacks, so maybe this is par for the course
<RickHull>
likewise I am not an EM person
<rue>
Also, probably don't want to rescue Exception (in the event it's masking an expected exception)
<coolfool>
rue: yes I completely agree, this was done so I could just see that it was being caught
<RickHull>
it looks like you are already doing puts/p debugging
<RickHull>
go ahead add some more, esp. inside the rescue
<rue>
But you're NOT seeing ‘it’ caught :)
<rue>
You may or may not be getting some exception
<coolfool>
I have now as I have added some debug in the Rescue and it's prints fine. It's just not seding the response.....
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<RickHull>
your begin block does nothing with resp, while your rescue only touches resp
<RickHull>
seems odd to me...
<RickHull>
i imagine there are requirements regarding the operation proc that have to be fulfilled for EM to work with it
<coolfool>
the second block of code is the same as mine
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<coolfool>
Interesting observation, if me debug statement is at the top of the resuce block i.e. before the resp.xxxx stuff, it displays. If it's at the end of the rescue block, it doesn't!
<rue>
So, perhaps there's another error?
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<coolfool>
rue: how would I discover the lifetime of resp and find out if it has become out of scope?
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<coolfool>
hmm... ok I think there was another error.
<coolfool>
I think it will work now!! Thanks a lot for all your help.
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<erikh>
valid ruby: ?:??::?:
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<zenspider>
not terribly useful, but yes, valid...
<erikh>
heh
<zenspider>
wonder if ruby_parser will be cool with that
<deryl>
damn, eye crossing image there removing the words and leaving the parens (()((()(()))))
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<RickHull>
irssi lisp-mode FTW?
<deryl>
heh
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<yxhuvud>
heftig: I might have made a mistake somewhere. But in general, there are more than one way of capitalizing, since both (Adj noun verb ..) and (noun Adv verb ..) is possible.
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<jaimef>
"192.168.15.1".split('.')[-3..-1].each { |x| x.to_s(16) if x} # what am I doing wrong?
<erikh>
is there some reason they need to be elided?
<manveru>
not really
<erikh>
foo//bar//baz is legal on a unix fs at least
<rob__>
pretty urls
<rob__>
in sinatra
<manveru>
so not for paths
<lianj>
manveru: hehe, FFI::Pointer.new(["Hello, World!"].pack('P').unpack('L')[0]).read_string(100) not sure if it adds a "\x00" of its just by chance
<erikh>
I think running this through URI might normalize it
<zenspider>
FUCK rails is the most developer hostile environment I've come across in a long long time
<bougyman>
indeed
<bougyman>
unless youbdrank the koolaid.
<zenspider>
I look forward to the day we shoot bundler in the head
<bougyman>
then ita rainbows and unicorns
<zenspider>
and a comple devaluation of your time
<shevy>
where is the rails love here :(
<rob__>
ive always tried to work out what the point of rails is, is it just like using sinatra but with a built in database?
<shevy>
dunno
<shevy>
perhaps it is just for marketing tricks
<shevy>
"they use raaaaaaaaaaaaails!"
<shevy>
sounds kinda cool doesn't it?
<RickHull>
sinatra is just like rails but without the legacy
<rob__>
RickHull: how do you mean?
<rob__>
honestly im rails clueless
<RickHull>
rails came first. sinatra (IIRC) tried to keep the best parts
<rob__>
i picked up sinatra and liked it so havent used anything else
<shevy>
hehe
<RickHull>
rails are so mid-19th century. we need tarmac
<RickHull>
and hydroplanes
<wmoxam>
RickHull: or maybe a Maglev
<RickHull>
oh snap! ;)
<RickHull>
i'll settle for a gyrocopter
<workmad3>
RickHull: the new web framework will be Ruby Flying Cars!
<shevy>
hmm
<shevy>
gunship-on-rails
<wmoxam>
Ruby on Teleporters
<shevy>
Ruby in Bikinis
<RickHull>
pythons on planes is my favorite
<shevy>
hmm
<wmoxam>
Ruby's gone wild!
<bougyman>
bikinis sounds best
<shevy>
lua on LSD
<shevy>
does perl have something like that? I mean... ruby on rails... pythons on planes (lol poor pythons)
<manveru>
of course
<robgleeson>
Perl on broken promises
<robgleeson>
cha ching
<lianj>
shevy: i think it called lua on zedshaw
<wmoxam>
Perl on Peyote
<erikh>
Perl has several nice frameworks
* erikh
sighs
<robgleeson>
erikh: sorry I couldn't resist the Perl6 pun
<bougyman>
perlMVC
<shevy>
haha
<erikh>
it's called Catalyst
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<erikh>
and the ORM makes AR look like a toy
<robgleeson>
yeah
<robgleeson>
from mst
<robgleeson>
socialable guy
<erikh>
yep
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<erikh>
hehe yes
<erikh>
he's nice enough when you really get to know him
<bougyman>
erik: so does Sequel
<manveru>
actually BBC made Perl on Rails, afaik
* imperator
just got here, wonders who erikh is referring to, but has some guesses :)
<erikh>
mst
<mrneighborly>
bougyman: last time i used sequel, i went back to AR and regretted ever going down that road :( bugs bugs bugs but that might have changed now
<imperator>
who?
<erikh>
matt trout, DBIC guy
<manveru>
mrneighborly: 2006?
<imperator>
oh, perl dude
<erikh>
yes
<erikh>
I'm here to defend perl from the haters
<mrneighborly>
manveru: nah more recently than that, though to be fair it has been a couple year probably
<mrneighborly>
just got in too deep and it bit me hard to try to back out of it. left me scarred :)
<imperator>
erikh, why? ;)
<erikh>
eh, bored @ work
<RickHull>
someone is wrong on the internet
<erikh>
exactly.
<imperator>
manveru, i knew a guy who did perl at bbc i think
<shevy>
hmm psychos
<imperator>
ovid
<erikh>
he's at booking.com now
<erikh>
along with just about everyone else relevant in the perl community
<erikh>
not *everybody*, but quite a few
<shevy>
sounds like a perl graveyard
<imperator>
ouch
<manveru>
mrneighborly: that kinda describes my experience with AR :)
<robgleeson>
erikh: mst is?
<mrneighborly>
manveru: yeah AR has its warts, i just know how to work around them. :P i'm sure if i spent time with sequel or datamapper i could figure out how to work within them the same way
<erikh>
mst is actually a pretty fun guy, just has a very low tolerance for ignorance
<robgleeson>
I thought he ran shadowcats
<manveru>
mrneighborly: but at that time, Og was still hot
<erikh>
oh, no he's not at booking.
<AndChat|>
I had a meta programming battle with mst last year
<shevy>
meta what
<shevy>
in perl?
<mrneighborly>
manveru: quite right. what happened to Og/nitro? did it die? somehow camping still rolls on merrily.
<manveru>
camping is a lot less maintenance-intensive
<manveru>
and yeah, they died
<shevy>
hmm
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<manveru>
trans took over og, and gmosx went on to js
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<shevy>
wha
<mrneighborly>
this is true. i'm always surprised at new people picking it up. i would think sinatra would be what most people actually use these days for what i would have used camping for. then again, it's fun to play with
<shevy>
doesn't trans have like 8795389735 projects already
<manveru>
shevy: that's why it's dead :)
<manveru>
also... it dependend heavily on facets
<shevy>
hehe
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<manveru>
lianj: i'm kinda puzzled by the fact that FFI can read the string from the P result
<erikh>
it's just a pointer, right?
<manveru>
yeah
<erikh>
then .... why are you surprised? :)
<manveru>
"pointer to a structure (fixed-length string)"
<manveru>
because it claims not to be zero-terminated
<erikh>
oh, I see.
<lianj>
manveru: from my short tests it looks like it always is
<erikh>
are you sure you're not running into a null elsewhere? (like in a struct as a member immediately after the string)
<erikh>
"implementation defined", but it's almost always like that
<manveru>
yeah, might be
<lianj>
like if its a new string and not just the pointer to that string passed to pack
<lianj>
yea, or that
<manveru>
still weird
<manveru>
where is the length stored?
<erikh>
RSTRING(str)->len
<erikh>
IIRC
<erikh>
so however RSTRING works under the hood, probably in ruby.h
<erikh>
or the split up files that ruby.h now encapsulates
<drbrain>
erikh: RSTRING_LEN
<erikh>
I thought ... which one is the 1.8 version?
<drbrain>
erikh: strings no longer (necessarily) have a filled-in len pointer
<erikh>
gotcha
<drbrain>
RSTRING(str)->len
<erikh>
actually, that might be what you're hitting manveru
<drbrain>
in 1.9, short-enough strings are stored in the object header and don't have a separate allocation
<erikh>
oh neat
<shevy>
sounds clever
<drbrain>
same for arrays
<manveru>
testing
<shevy>
failed
<manveru>
got a segfault
<manveru>
yay
<manveru>
now let's see how it failed :)
<manveru>
ok, that was because it's not L but Q
<manveru>
on 64bit anyway
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<manveru>
terminated it at length 400_000, this isn't gonna work
<zenspider>
welcome to FFI hell?
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<manveru>
not really...
<manveru>
just wanted to see what the difference between p and P is
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<dreinull>
is there a best practice for writing longer || and && statements?
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<RickHull>
dreinull: paste what you are considering
<RickHull>
generally, best practice is: don't get too cute