Shuffling an array is one of those thinks that can be done much more efficiently in C/XS than in Perl.

I have just uploaded to CPAN Array::Shuffle, that is one or two orders of magnitude faster than List::Util::shuffle or your hand-crafted shuffle implementation in Perl.

It's memory usage is O(1).

(List::Util::shuffle is also implemented in C, but it has the wrong interface from a performance point of view)

In reply to Re: Very Large Arrays by salva
in thread Very Large Arrays by Desade

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