You need to use string comparison in line 6:                       if ($key eq $thing)   { However, it would be better to check existence of the array element as a hash key, exists $hash{$_} and push @new_array, $hash{$_} for @array; replaces the whole thing. That could be done with map and grep, too: my @new_array = map {$hash{$_}} grep {exists $hash{$_}} @array; or a slice with grep, my @new_array = @hash{ grep {exists $hash{$_}} @array };

After Compline,
Zaxo

In reply to Re: comparing array elements to hash keys by Zaxo
in thread comparing array elements to hash keys by Anonymous Monk

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