What's a simple way to add the elements of two arrays together? Something like this: 

$list1[0] += $list2[0];
$list1[1] += $list2[1];
$list1[2] += $list2[2];
$list1[3] += $list2[3];

[download]

The solution that occurs to me is: 

for my $i (0..3) {
  $list1[$i] += $list2[$i];
}

[download]

What if instead of an array, you have a list (or, at least, you could make a list)? Something like this: 

$some_value += $array[0];
$some_other_value += $array[1];
$this_variable += $array[2];
$that_variable += $array[3];

[download]

That doesn't seem to lend itself as handily to a simple for loop.

In reply to Adding two lists together by markkawika

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