My permutor

in reply to RE: Re: How can I improve this?
in thread How can I improve this?

Well, since everyone is posting their permutors, here's mine:

sub permute {
  my $last = pop @_;
  unless (@_) {
    return @$last;
  }
  return map { my $left = $_; map "$left$_", @$last } permute(@_);
}
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-- Randal L. Schwartz, Perl hacker

In Section Seekers of Perl Wisdom