Hmm... I'm surprised that introducing that temporary variable for swaps makes such a difference, but it does appear to. Do you have any explanation? Is it because it's saving a couple of array indexing operations, or is it just that ($x,$y)=($y,$x) is implemented suboptimally by Perl?

use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name

In reply to Re^3: quick sort. How do it faster by tobyink
in thread quick sort. How do it faster by builat

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