On Aug 20, 2008, at 4:15 PM, Torsten Curdt wrote:
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.
They differ in type, not in value.
"NULL" is (void *) 0.
"nil" is (id) 0.
"Nil" is (Class) 0.
Personally, I prefer "if (!foo)" over "if (foo == nil)", because the
latter has the hazard of a typo that compiles. You can lose a fair
bit of time staring at "if (foo = nil)" before you spot the mistake.
-jcr
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