Overview

Contrary to popular belief, go has inheritance through composition!

Inheritance

Struct

• A struct type can compose another type

For eg.

type Bar string

func (b Bar) bar() {}

type Foo struct {
  Bar
  // Bar Bar
}

• Here the custom type Foo "inherits" Bar's bar method

• If a struct composes a struct, it can also "inherit" Fields

• Multiple inheritance is possible

Interfaces

• An interface can compose another interface