exit status: 1 with stderr:
<stdin>:8:20: error: cannot assign to property: '_bow' is a 'let' constant yield &_bow ^~~~ <stdin>:2:13: note: change 'let' to 'var' to make it mutable private let _bow: String = "にゃー" <stdin>:13:6: error: value of type 'Cat' has no member 'a' tama.a = "わん" <stdin>:14:12: error: value of type 'Cat' has no member 'a' print(tama.a) ~~~~ ^