Yes, nil is the equivalent of NULL and 0
nil is used for objective-c objects and NULL for C pointers
Regards
Vlad
On Aug 21, 2008, at 1:15 AM, Torsten Curdt wrote:
On Aug 21, 2008, at 00:30, Filip van der Meeren wrote:
On 21 Aug 2008, at 00:23, Torsten Curdt wrote:
This question has come up during the last CocoaHeads and no one
was really able to give a definite answer.
Do both expressions really mean the same thing (as nil is not null)?
if (!foo) {
...
}
if (foo == nil) {
...
}
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
cheers
--
Torsten
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