Re: Encoding function pointer in an NSValue
Re: Encoding function pointer in an NSValue
- Subject: Re: Encoding function pointer in an NSValue
- From: "Joshua Pennington" <email@hidden>
- Date: Thu, 24 May 2007 17:14:58 -0500
You can use:
NSValue *value = [NSValue valueWithPointer:foo];
Which is equivalent to calling:
[NSValue value:foo withObjCType:@encode(void *)];
On 5/24/07, Ken Tozier <email@hidden> wrote:
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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