Re: NSNumber : method to return pointer to represented value
Re: NSNumber : method to return pointer to represented value
- Subject: Re: NSNumber : method to return pointer to represented value
- From: Mike Kluev <email@hidden>
- Date: Fri, 21 Feb 2014 21:37:32 +0000
> I require an pointer to the value represented by an NSNumber.
> ...
> I am using NSNumber instances in collections as keys.
i may not fully understand your question, but can you not just use
NSValue valueWithPointer as your collection keys?
or, if a number at all, the number matching the pointer representation:
[NSNumber numberWithLong:*(ptrdiff_t*)&pointer]
or a string in a similar manner: [NSString stringWithFormat:@"%p", pointer];
in my experience resorting to tricks of objc_getAssociatedObject is
asking for trouble (e.g. the associated object is not released with
zombies).
Mike
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