On Nov 21, 2008, at 8:44 AM, David Blanton wrote:
How would one construct an NSIndexSet containing the indices 2,4,5 ?
I did:
NSRange two = NSMakeRange(2, 1);
NSRange four = NSMakeRange(4, 1);
NSRange five = NSMakeRange(5, 1);
NSRange u1 = NSUnionRange(two,four);
NSRange u2 = NSUnionRange(u1,five);
id indices = [NSIndexSet indexSetWithIndexesInRange:u2];
But, of course, NSUnionRange adds 3 so indices becomes 2,3,4,5.
Use an NSMutableIndexSet:
NSRange range = NSMakeRange(2, 4);
NSMutableIndexSet *mutSet = [[NSMutableIndexSet alloc]
initWithIndexesInRange:range];
[mutSet removeIndex:3];
And if for some reason you really need it as a non-mutable version:
NSIndexSet *set = [[NSIndexSet alloc] initWithIndexSet:set];
Compiled in Mail.app; caveat emptor.
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