Re: NSUInteger question
Re: NSUInteger question
- Subject: Re: NSUInteger question
- From: Chris Parker <email@hidden>
- Date: Wed, 9 Apr 2008 09:17:36 -0700
On 8 Apr 2008, at 6:19 PM, Christopher Nebel wrote:
On Apr 8, 2008, at 5:30 PM, Timothy Reaves wrote:
What advantage does NSUinteger have over uint32? I realize that
on a 64 bit machine, it would be a uint64.
"Advantage"? None, really. It's a question of what you're trying
to express -- do you want specifically a 32-bit unsigned integer, or
do you want an unsigned integer that reflects the architecture's
word size? For instance, there's no particular reason to limit
NSArray's capacity to exactly 2^32 items all the time, so -count is
defined as returning an NSUInteger -- 2^32 in 32-bit, or 2^64 in 64-
bit. (Also consider the analogous size_t type.)
Well, that and this:
The advantage is not having to do something like this:
#if __LP64__
- (int)someMethodWhichTakes:(int)foo;
#else
- (int64_t)someMethodWhichTakes:(int64_t)foo;
#endif
and sprinkle those all over the place later too...
This:
- (NSInteger)someMethodWhichTakes:(NSInteger)foo;
is far more readable. :)
.chris
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