Completed test 36 test_changing_hashes
Completed test 36 inserted an answer for the question after test_changing_hashes
Completed test 37 test_hash_is_unordered, showing hashes are indeed unordered
Completed test 38 test_hash_keys
Completed test 39 test_hash_values
Completed test 40 test_combining_hashes
Completed test 41 test_default_value
Completed test 42 test_default_value_is_the_same_object yes, yes it is.