Yes, only storing "ones" would work well with NSMutableIndexSet's containsIndex method. If you didn't get a "hit" you'd know that that position was a "zero." I was incorrectly thinking of NSMutableIndexSet as an array.
--- On Wed, 9/10/08, Shawn Erickson <[EMAIL PROTECTED]> wrote: > On Wed, Sep 10, 2008 at 9:18 AM, Joel Norvell wrote: > > OK. I think I've got it. One could use an > > increasing sequence of integers, letting evenness and > > oddness determine the boolean state at any index. That > > would save a huge amount of "overhead" in this case! > > You only need to store the "index" of all the "ones" not need for > even/odd business. You then walk the index set picking out the ones > and marking down zeros for those indexes not in the set, etc. > > Of course the bit vector that someone suggested earlier is likely a > better tool for this. > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]