$output = delete_undef_values({a=>'A', b=>'', c=>undef, d => false})
if $output == { a => 'A', b => '', d => false } {
notify { 'output correct': }
}
$output = delete_undef_values({a=>'A', b=>'', c=>undef, d => false})
if $output == { a => 'A', b => '', d => false } {
notify { 'output correct': }
}