use Test::More;
use strict; use warnings FATAL => 'all';
use List::Objects::WithUtils 'array';
my $arr = array(1, undef, 3);
ok $arr->defined(0), 'defined(0) ok';
ok !$arr->defined(1), '!defined(1) ok';
ok $arr->defined(2), 'defined(2) ok';
ok !$arr->defined(3), '!defined(3) ok';
done_testing