Tie-OneOff
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#!./perl
use strict;
use warnings;
print "1..6\n";
my $testno;
sub t ($) {
print "not " unless shift;
print "ok ",++$testno,"\n";
}
require Tie::OneOff;
tie my %REV, 'Tie::OneOff' => {
FETCH => sub { reverse shift },
};
( run in 1.942 second using v1.01-cache-2.11-cpan-600a1bdf6e4 )