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Your code is better written as

sub loop_factorial { my ($n, $total) = @_; $total = 1 unless $total; while ($n) { ($n,$total) = ($n - 1, $total * $n); } return $total }

Which is more efficient, and is IMO a better example of what a compiler that optimizes tail recursion would convert it to.


---
demerphq

    First they ignore you, then they laugh at you, then they fight you, then you win.
    -- Gandhi



In reply to Re: Re: Pure Perl tail call optimization by demerphq
in thread Pure Perl tail call optimization by pdcawley

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