Can you offer an example where this inefficiency is significant?

Perl's dynamic allocation algorithm is designed so that the average cost of resizing and reallocating works out to be a constant amount per push. I'm not sure that avoiding that cost only to have to keep track of what index you're on will be a win.

In reply to Re^2: Sloooooow algo in Perl by tilly
in thread Sloooooow algo in Perl by cormanaz

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