Curriculum Idioms & ecosystem Embedding exercise 3 · mcq
Embedding
Pick the IDIOMATIC composite-literal syntax to construct a
Dog (which embeds Animal) with Name: "Rex" and
Breed: "Lab".
TypeScript: new Dog("Rex", "Lab"). Go embedded fields
use the TYPE NAME as the field name in composite literals.
TypeScript reference
About this theme
Struct embedding gives you composition without inheritance. Embed a type as an unnamed field and its methods get promoted onto the outer struct. This is how Go does "extend a type" — by containing one. The rule: prefer composition; Go literally doesn't give you inheritance to misuse.