hercynium

use strict;
use warnings;
use feature ":5.10";

my @ar = qw( a b c d );
my $ar_ref = \@ar;

say @ar;      # abcd
say @$ar_ref; # abcd - same array, so same contents

hercynium

my $opt_parser = OptParser->new();

$opt_parser->add_option(
    name    => "foo"       # name used to refer to this option
    short   => "f"         # use as -f
    long    => "foo"       # use as --foo
    depends => "bar|baz"   # option only valid if bar or baz is specified. using
                           # an array to list depends may be simpler... or not
    conflicts => "buh"     # option conflicts with option buh.