Catching cases of missing self when setting ivars

Does anyone know of a decent way to catch forget开发者_Python百科ting to use 'self.' when setting variables? Is there an xcode compiler setting that can trigger warnings? I'm trying to think of the easiest way to make ensuring there is a 'self.' in front of assignments foolproof.

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The best I can suggest so far is to differentiate the ivar and property name, like:

@implementation Person
@synthesize firstName = firstName_;
@end

so it is harder to make mistake, though it is not foolproof.