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1.4.9 Using and defining formal protocols

Classes defined by define-objc-class can be made to support Objective-C formal protocols by specifying the :objc-protocols class option. All the standard formal protocols from Mac OS X 10.4 are predefined, but additional protocols can be defined using the define-objc-protocol macro.

 


LispWorks Objective-C and Cocoa Interface User Guide and Reference Manual - 9 Mar 2006

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