We get a difference in the space needed. When represented as a bitmap, each set member takes 1 bit. When represented as boolean each set member takes 1 byte. When represented as integer each set member takes 8 bytes, 64 times more than in the bitmap representation. Much of the time/space differences between these three otherwise nearly identical programs is probably due to this difference. /Erling

On 2017-11-11 12:31, Raul Miller wrote:
No,

That would be comb, not combbool, nor combbit.

Thanks,


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