> NSIndexSet can use less than 1-bit per bit :)
> (It compresses contiguous ranges)

In some cases, especially where 1s are relatively sparse, as with
selections. It can also take a whole lot more than 1 bit per bit, since a
range is a pair of 32-bit ints.

-- 
Scott Ribe
[EMAIL PROTECTED]
http://www.killerbytes.com/
(303) 722-0567 voice


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