There are a lot of things you can do with Perl that you shouldn't do.

#!/usr/bin/perl

use strict;

sub bob {
  map { print "$_$/" } @_;
}

my @thing = qw(tom dick harry);

bob(@thing);

print "============$/";

my @results = bob(@thing);

print "We printed " . (scalar @results) . " items$/";
[download]

antirice    
The first rule of Perl club is - use Perl
The ith rule of Perl club is - follow rule i - 1 for i > 1

but that uses the return from map, although it's hidden.

I don't see why using map in a void context is so wrong. Sometimes it expresses something better, particularly if the order of operation doesn't matter:

map {transform($_)} @elements; # transform() does something inline
[download]

A massive flamewar beneath your chosen depth has not been shown here