The best method is 
foreach $foo(@foo)
{
  $bar = $some + $thing;
}

[download]
no need for an intermediary step unless you're doing something with $bar.

If $bar has a default value, set it to that value, otherwise undef.

In reply to Re: undef vs. $foo = 0 by crazyinsomniac
in thread undef vs. $foo = 0 by DaWolf

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