As of perl5.6 values() returns the actual variables and not copies. This means that you can do fancy stuff like     $_ = $prefix . $_ foreach values %hash; Actually, I'd even prefer     $hash{$_} = $prefix . $hash{$_} foreach keys %hash; over the map() approach, since as you say, there can be hundreds of them (or 18278 as in your example! ;)) and building up another list of that would be a waste. Or is there any funky optimization going on that I'm unaware of?

In reply to Re: (Ovid) Re: Is a global variable better than repetition within variables? by Anonymous Monk
in thread Is a global variable better than repetition within variables? by c

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