On Nov 21, 2008, at 7:44 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.
Or, should one even use NSIndexSet?
The easiest way is to make a mutable index set:
NSMutableIndexSet *indices = [NSMutableIndexSet indexSet];
[indices addIndex:2];
[indices addIndex:4];
[indices addIndex:5];
Hope this helps,
- Greg
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