[MacRuby-devel] rubyfying Cocoa iterators

[techzen]

The Cbjective-C way to handle this would be to put a category that provided an `each` method on NSOrderedSet. Then when you called `each` it would just work. Ruby has a similar functionality but I can't remember right now what it's called. 

Using a category would be optimal in the case of Core Data because in some instances you can actually evoke a method as part of a key path when sending Key-Value messages.

Shannon

On Nov 16, 2011, at 4:11 AM, Jean-Denis MUYS wrote:

> I have this ordered Core Data to-many relation named "operations" that I want to iterate over. I wrote:
> 
>    self.operations.each { | operation | operation.doSomething }
> 
> However this fails because self.operations returns an NSOrderedSet and NSOrderedSet doesn't have an 'each' method.
> 
> I was able to use the 'enumerateObjectsUsingBlock' method of NSOrderedSet which is working fine.
> 
> My question is: what would be the MacRuby way to add an 'each' method to NSOrderedSet?
> 
> Thanks,
> 
> Jean-Denis
> 
> 
> 
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