Oh, and another use for state variables — caching/memoization. For example: 

sub sort_network {
  state @mem;
  my $cmp = $mem[@_] //= do {
    ...
  };
  my @res = @_[ @$cmp ];
}

[download]
I'm sure there are plenty more uses.

In reply to Re^3: Variable scope by Anonymous Monk
in thread Variable scope by Alphaphi

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