exists() 

my $key = 'key01';
if (exists $hash{$key}) { 
    print "$key is in hash";
}

[download]
If the values of in the hash can all be considered "true" (as in your example), then you could simplify this further to: 
my $key = 'key01';
if ($hash{$key}) { 
    print "$key is in hash";
}

[download]

Liz

In reply to Re: Best way check key availability by liz
in thread Best way check key availability by banduwgs

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