Re: -NSMutableIndexSet shiftIndexesStartingAtIndex:by: weirdness
Re: -NSMutableIndexSet shiftIndexesStartingAtIndex:by: weirdness
- Subject: Re: -NSMutableIndexSet shiftIndexesStartingAtIndex:by: weirdness
- From: Tommy Nordgren <email@hidden>
- Date: Thu, 17 Sep 2009 16:50:41 +0200
On 17 sep 2009, at 15.23, steven Hooley wrote:
- shiftIndexesStartingAtIndex:by: and
-containsIndexesInRange:NSMakeRange: don't seem to play nicely
together..
Is this expected?
NSMutableIndexSet *someIndexes = [NSMutableIndexSet indexSet];
[someIndexes addIndex:0];
[someIndexes addIndex:2];
[someIndexes shiftIndexesStartingAtIndex:2 by:-1];
BOOL result1 = [someIndexes containsIndex:0];
BOOL result2 = [someIndexes containsIndex:1];
BOOL result3 = [someIndexes containsIndexesInRange:NSMakeRange(0,2)];
Here is the error. You are asking if the index set contains (0,1,2),
But it only contains (0, 1) after the shift
Try using NSMakeRange (0,1) instead.
NSLog(@"%@ %@ %@", (result1 ? @"YES" : @"NO"), (result2 ? @"YES" :
@"NO"), (result3 ? @"YES" : @"NO") );
-- 2009-09-17 14:21:25.789 otest[19356:10b] YES YES NO
thanks
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