Re: [Rubycocoa-talk] objc_method documentation?

[Allison N. <dem...@ma...>]

Nat,

I can't help you with the bridge, but I'm guessing that Apple's  
Scripting Bridge documentation should be of interest in doing what you  
are trying to do.  If you haven't already looked at it, this may help:
http://developer.apple.com/documentation/Cocoa/Conceptual/RubyPythonCocoa/Articles/GenerateFrameworkMetadata.html#/ 
/apple_ref/doc/uid/TP40005426

As mentioned on that page, the manpage ('man BridgeSupport 5' in the  
terminal) also gives some important information.

Other than that, I can't really help you for the bridge.  If all of  
that gets too hard, you might try just writing a plain ol' C extension  
to Ruby, which can also do what you want if all you want is to call  
Ruby from Objective-C, and not the inverse.

As for having multiple copies of ruby installed on your system, it  
won't cause you any dramas if you are just trying to run the app from  
inside XCode, or even a a standalone.  But I had all sorts of problems  
when i wanted to run some rspec unit tests, or run my app inside irb  
to debug it.  My system kept trying to use my copy of ruby stored in / 
usr/local/bin, which wasn't compiled with --enabled-shared.  Worse  
still, its LIBRARIES variable didn't have the RubyCocoa framework in  
its path either.  I ended up just deleting that version of ruby, along  
with its friends (irb, erb, ri, rdoc etc).  If I ever need it again,  
I'll be making sure that it's correctly compiled to work wth RubyCocoa  
when I install it. So be very careful with this, here be dragons...

Alli


Le 13 juin 08 à 02:37, Nathaniel Irons a écrit :

> Is there a source of good documentation for objc_method? I'm trying  
> to call, from Obj-C, a three-argument Ruby method taking an array  
> and two strings, and returning a boolean. I'm getting inconsistent  
> results owing to my lack of understanding -- sometimes the returned  
> result isn't typed as boolean, sometimes calling the method raises  
> an exception about the wrong number of arguments. I started with  
> examples from this page:
>
> http://limechat.net/rubycocoa/bridge_test.html
>
> But I'm don't recognize the "B@:@@" syntax, which is proving google- 
> resistant.
>
> I see some commentary about improved boolean handling in the release  
> notes for .13, but I can't tell how much trouble I'll be biting off  
> if I move beyond the Leopard-bundled framework. Any problem  
> reverting, if necessary?
>
> While I'm asking, the .13.2 installer warns "If you overwrote  
> Apple's Ruby with a custom version, please make sure that it has  
> been built with --enabled-shared." I trust this is aimed at people  
> who replaced /usr/bin/ruby for some reason, and not applicable to  
> upstanding individuals with oddball /usr/local/bin/ruby. --enabled- 
> shared is fine, I just don't want to discover down the road that my  
> deployment targets expect similarly oddball ruby installations.
>
> Thanks,
>
>   -nat
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