Perl doesn't exactly pass by value -- you can modify the calling arguments by monkeying with the values of @_.

All that seems needed here is :
sub concat { join '', @_ }

my $joined = concat( $first_part, $second_part );

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Updated to remove misplaced rant about symbolic references - see below.

In reply to Re: Re: sub functions, and strings by FamousLongAgo
in thread sub functions, and strings by bdawg613

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