This may be a newbish question, but according to the map perldoc... 
    %hash = map { getkey($_) => $_ } @array;

is just a funny way to write

    %hash = ();
    foreach $_ (@array) {
    $hash{getkey($_)} = $_;
    }

[download]
So doesn't map still solve the problem by using a loop? And wouldn't all the inefficiencies of using a loop directly be carried over by using map?

Honest questions, I'm genuinely curious.

In reply to Re^2: Get AoH values into array by starX
in thread Get AoH values into array by Anonymous Monk

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