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Encoding function pointer in an NSValue
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Encoding function pointer in an NSValue


  • Subject: Encoding function pointer in an NSValue
  • From: Ken Tozier <email@hidden>
  • Date: Thu, 24 May 2007 17:06:43 -0400

Hi

I've managed to confuse myself about what exactly I should supply to NSValue's value:withObjCType: when the value is a function pointer. Say I define a function pointer typedef like so:

typedef int		(*MyObjectComparitor)(id inObject1, id inObject2);

Which of the following is correct?

MyObjectComparitor	objComparitor	= foo;	// some function pointer

NSValue		*comparitor		= [NSValue value: foo
										withObjCType:@encode(MyObjectComparitor)];

NSValue		*comparitor		= [NSValue value: foo
										withObjCType:@encode(MyObjectComparitor *)];

Is it possible to do this sort of thing with a function pointer?

Thanks in advance

Ken



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