Re: [Obj-C] if (self) vs. if (self != nil)
Re: [Obj-C] if (self) vs. if (self != nil)
- Subject: Re: [Obj-C] if (self) vs. if (self != nil)
- From: Scott Ribe <email@hidden>
- Date: Fri, 24 Feb 2012 15:07:23 -0700
On Feb 24, 2012, at 10:52 AM, Wade Tregaskis wrote:
> Though technically speaking it's true, and is thus an argument for actually using NULL rather than 0
No, it's not such an argument at all. The compiler guarantees that null pointers converted to int become 0, that constant 0 assigned to a pointer makes it null, and that null pointer compared to 0 is true--regardless of whether the underlying hardware/OS representation of a null pointer is all 0 bits or not.
--
Scott Ribe
email@hidden
http://www.elevated-dev.com/
(303) 722-0567 voice
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