foreach (@matches) {
  push(@chomped, chomp($_));
}

##</code><code>##

$ cat alpha 
abc
def
ghi
$ perl -le '
-> @arr = <>;
-> push @chomped, chomp( $_ ) for @arr;
-> print for @chomped;' alpha
1
1
1
$ perl -le '
-> @arr = <>;
-> @chomped = map { chomp; $_ } @arr;
-> print for @chomped;' alpha
abc
def
ghi
$ perl -le '
-> @arr = <>;
-> $count = chomp @arr;
-> print $count;
-> print for @arr;' alpha
3
abc
def
ghi
$