[Openmcl-devel] Why .cdb instead of method_getTypeEncoding for cocoa?

[R. Matthew Emerson]

Apple added a feature called BridgeSupport in Leopard which provides a  
way for Cocoa bridges to get interface data about Mac OS X frameworks.

http://developer.apple.com/documentation/Cocoa/Conceptual/RubyPythonCocoa/Articles/GenerateFrameworkMetadata.html