May the more enlightened members of the monastery correct me if I'm wrong, but foreach is a control construct. It does not return a value; it controls the execution of your code.

What you want is map, which takes a list, performs a operation on each element and returns the resulting list of processed elements:

#!/usr/bin/perl

use strict;

my @array  = (1, 2, 3, 4, 5);

my @results = map { $_ * 13 } @array;
# @results is (13, 26, 39, 52, 65)
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