Re: Finding out if an NSArray's contents are all equal
Re: Finding out if an NSArray's contents are all equal
- Subject: Re: Finding out if an NSArray's contents are all equal
- From: Andre <email@hidden>
- Date: Sat, 22 Jul 2006 11:08:04 -0700
Adam R. Maxwell wrote:
On Jul 22, 2006, at 10:29, Andre wrote:
Ashley Clark wrote:
Check out isEqualToArray: in NSArray.
Thanks for the response. Yea, but its only for comparing arrays to
arrays.
What I was looking for was if all objects in an array are equal to
each other.
IOW, are each and every object containing the same equivalent
value e.g
an array of NSNumbers all equalling 21.0 would return YES, else NO
if the
contents' NSNumber objects varied in their value...
(Again, it seems apple hasn't a built-in method for this
particular aspect...)
It almost sounds like you want an NSSet (or maybe a CFBag)? If you
want to stick with array functionality, this might work in a
category, though (untested):
CFIndex cnt = CFArrayGetCount((CFArrayRef)self);
return (cnt > 0 && CFArrayGetCountOfValue((CFArrayRef)self,
CFRangeMake(0, cnt), (void *)[self objectAtIndex:0]) == cnt);
Yea, something like that is what I was looking for, just was hoping
it was already defined somewhere in cocoa. (So I wouldn't have to
maintain it with tests etc.)
Thanks for the code sample. Its basically what I wanted to do.
Many thanks,
Andre
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