Be careful with autovivification: 
perl -e 'use Data::Dumper; $x = {a => "B"}; print Dumper $x; delete $x
+->{y}{2}; print Dumper $x;'
$VAR1 = {
          'a' => 'B'
        };
$VAR1 = {
          'y' => {},
          'a' => 'B'
        };

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In reply to Re: Delete idempotence by choroba
in thread Delete idempotence by derekstucki

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