Maybe map? and a util function to test for whether each element is a number - Scalar::Util?
use strict; use warnings;
# or some other util function that can tell if it is a number...
use Scalar::Util qw(looks_like_number);
my @array = ('1','2','45','65','what is this?');
my @mod = map {if (looks_like_number($_)){$_*2} else {$_}} @array;
print "$_\n" for @mod;
Hope this helps... (I am a bit Rusty, so be gentle...)
Just a something something...
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