Re: !foo vs foo == nil
Re: !foo vs foo == nil
- Subject: Re: !foo vs foo == nil
- From: Jim Puls <email@hidden>
- Date: Wed, 20 Aug 2008 16:42:35 -0700
Just try it out in a small project...
Keep in mind that Objective-C is the same as C, and C only checks
for numbers within the if() statement...
0 = false, 1 or more = true...
nil = 0 so, they mean the same thing...
I guess my questions wasn't phrased correctly. The point was more:
is 'nil' really the equivalent of 0 or NULL.
There was a common perception that NULL is not really the same as
nil. But seems like in the end it really is (void*)0.
http://cocoawithlove.com/2008/06/doing-things-in-cocoa-with.html
NULL is (void *)0.
nil is (id)0.
Use one for generic pointers and the other for objects to keep your
mind sane.
-> jp
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