Re^2: Efficient bit counting with a twist.

Why pack 'V'?

substr( $v, $p / 8, 1 ) is a byte, why mask with 4 bytes?

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Re^3: Efficient bit counting with a twist. by quester (Vicar) on Jan 27, 2013 at 09:02 UTC
Oh. That. It's just force of habit, I adapted this bit of code from the way I code bitmasks for IPv4 subnets. It would make more sense to code it as `pack 'C',...` rather than `pack 'V'`, although it works either way.	[reply] [d/l] [select]