key1 "value1"
key2 "value2"
key3 "value3"

##</code><code>##

$data_ref = {
key1 => "value1",
key2 => "value2",
key3 => "value3",
};

##</code><code>##

    my $data_ref = MyModule::filter_and_return_ref('datainput.txt');