Instead of deleting or undefing elements you could use splice. 
# delete $array[$x];
# $array[$x] = undef;
splice @array, $x, 1;

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That way you don't have to go through a garbage collection stage later, but you may not gain much in speed since splice is slower that delete.

In reply to Re: deleting array elements(efficiency/critique) by repson
in thread deleting array elements(efficiency/critique) by blueAdept

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