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Re^2: recursive exists in perl

by gsiems (Chaplain)
on Dec 10, 2010 at 02:49 UTC ( #876365=note: print w/replies, xml ) Need Help??

in reply to Re: recursive exists in perl
in thread recursive exists in perl

Is that really the case? For example, while the following doesn't autovivify $h{A}{B}{C} it does autovivify $h{A}{B}.

use Data::Dumper; my %h; if ( exists( $h{A}{B}{C} ) ) { print "Hi mom!\n"; } print Dumper \%h;

$VAR1 = {
          'A' => {
                   'B' => {}

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Re^3: recursive exists in perl
by Anonymous Monk on Dec 10, 2010 at 02:54 UTC
    use Data::Dumper; my %h; no autovivification; if ( exists( $h{A}{B}{C} ) ) { print "Hi mom!\n"; } print Dumper \%h; __END__ $VAR1 = {};

      Ah! Here I was thinking that "no autovivification" was commentary.

      cpanp -i autovivification

      Runs script again... sweet.

      Thank you kind Anonymous for enlightening this humble monk.

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