[Rubycocoa-talk] Conversion of Ruby <-> ObjC objects

[Will T. <wi...@th...>]

This is a simple case that keeps causing me problems. A ruby object  
passed to Cocoa and back doesn't come back as a ruby object. But  
worse its accessors don't return ruby objects either. Why does this  
code not work? IIs there something I should be doing??


class Test
     attr_reader :num

     def initialize
         @num = 3;
     end
end

arr = OSX::NSArray.arrayWithObject(Test.new)

puts arr.objectAtIndex(0)            # <RBObject: 0x4e51f0>
puts arr.objectAtIndex(0).class        # OSX::OCObject
puts arr.objectAtIndex(0).num.class    # OSX::NSDecimalNumber

puts "<10" if arr.objectAtIndex(0).num < 10 #crash


The crash is:
/Library/Frameworks/RubyCocoa.framework/Versions/A/Resources/ruby/osx/ 
objc/oc_wrapper.rb:17:in `ocm_send': NSDecimalNumber#<: -  
methodSignature is nil. (OSX::OCMessageSendException)
     from /Library/Frameworks/RubyCocoa.framework/Versions/A/ 
Resources/ruby/osx/objc/oc_wrapper.rb:17:in `method_missing'
     from /Users/william/Desktop/Scripting/simpleapp/build/ 
SimpleApp.app/Contents/Resources/rb_main.rb:21



cheers --Will