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Hi Monks,
use Data::Dumper; $x = {}; 1 if ( exists $x->{W} ) ; 1 if ( defined $x->{X} ) ; 1 if ( $x->{Y} ) ; 1 if ( exists $x->{Y}{X} ) ; 1 if ( defined $x->{Z}{A} ); print Dumper $x;
Result :
$VAR1 = { 'Z' => {}, 'Y' => {} };
What I don't want is Z, Y create by itself, when I try to check if some keys from inner are existed or not. Can I do that ? Hopefully this won't be the only solution
if ( $x->{Y} ) { if ( $x->{Y}{Z} ) { 1 if ( $x->{Y}{Z}{A} ) ; } } ; # $VAR={};
Any clues? Thank you very much!

In reply to How do you check if a key exists without creating it ? by exilepanda

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