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nickynick/Objective-C property key macro

Last active December 27, 2015 11:48
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A smart macro for getting a key string for an Objective-C property. Will give you a proper compilation error if something is wrong :)
Raw
Objective-C property key macro
#define KEY(Class, key) ( YES ? @#key : ^{ (void)((Class *)[[Class alloc] init]).key; return @""; }() )
/*
Usage:
KEY(UIViewController, navigationItem) - returns @"navigationItem"
KEY(UIView, frame) - returns @"frame"
KEY(UIView, tag) - returns @"tag"
KEY(UIView, foobar) - compilation error!
*/
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