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Pure Perl tail call optimization

by pdcawley (Hermit)
on Apr 24, 2002 at 14:13 UTC ( #161611=perlmeditation: print w/ replies, xml ) Need Help??

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  1. or download this
    sub tail_factorial {
      my($total, $n) = @_;
    ...
        return tail_factorial($total * $n, $n - 1)
      }
    }
    
  2. or download this
    sub tail_factorial {
      my $total = shift; my $n = shift;
    ...
        goto &tail_factorial;
      }
    }
    
  3. or download this
    sub run_ops {
      my $self = shift;
    ...
        }
      }
    }
    

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