How To Call Objective-C Methods From Ruby
To invoke an Objective-C method, you replace each colon in the method name except the last with an underscore. Thus, for example, the NSWindow instance method initWithContentRect:styleMask:backing:defer: becomes initWithContentRect_styleMask_backing_defer.
All Cocoa classes and functions belong to OSX module, so for example, the Objective-C code:
will become:
OSX::NSWindow.alloc.initWithContentRect_styleMask_backing_defer(frame, OSX::NSTitledWindowMask, OSX::NSBackingStoreBuffered, false)As you can see, this decreases the code readability by rendering Objective-C parameter naming useless. So, there is another convenient way to write the method calls — the objc_send method, which accepts Ruby symbols as parameter names. For example, the previous code can also be written as:
Read more about this topic: RubyCocoa
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