Is hash key defined and existed : key « Hash « Perl






  1. Perl
  2. Hash
  3. key

Is hash key defined and existed

   
#!/usr/bin/perl

use strict;
use warnings;

my %hash = ('Key1' => 'Value1', 'Key2' => 'Value2');
my $key = 'Key1';

if (exists $hash{$key}) {
    if (defined $hash{$key}) {
        print "$key exists and is defined as $hash{$key} \n";
    } else {
        print "$key exists but is not defined \n";
    }
} else {
    print "$key does not exist\n";
}








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