require 6.0; # yeah, sure

my $f1 is chomped = IO::File.new( shift ) or die("ack - $!");
my $f2 is chomped = IO::File.new( shift ) or die("ack - $!");

my @f1 is from <$f1>;
my @f2 is from <$f2>;

my @join = @f1 ^_ @f2;

##</code><code>##

my @join = @f1 ^_ " " ^_ @f2;