Ah! But if it is out and out speeed we are after then I might have offered :) 

sub buk2 { $_[0] % 4 ? 0 : $_[0] % 100 ? 1 : not $_[0] % 400; }

            Rate browseruk    isleap   abigail      buk2
browseruk 82.8/s        --      -40%      -54%      -67%
isleap     138/s       67%        --      -24%      -45%
abigail    180/s      118%       31%        --      -28%
buk2       251/s      203%       82%       39%        --

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Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong." -Richard Buckminster Fuller


In reply to Re: Re: Anyone use "xor" in conditionals? by BrowserUk
in thread Anyone use "xor" in conditionals? by bsb

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