Interface

An interface is a set of methods that describe the behavior of the data type. Interfaces define the behavior(s) of the type that must be satisfied to implement that interface. A behavior describes what that type can do. Almost everything exhibits certain behavior. For example, a cat can meow, walk, jump, and purr. All of those are behaviors of a cat. A car can start, stop, turn, and speed up. All of those are behaviors of a car. Similarly, behaviors for types are called methods.

Note

The definition that the official documentation provides is Interfaces in Go provide a way to specify the behavior of an object.  (https://go.dev/doc/effective_go#interfaces_and_types)

There are several ways to describe an interface:

• A collection of method signatures is methods with only the name of the method, its arguments, types, and a return type. This is an example of a collection of method signatures for the Speaker{} interface:

  type Speaker interface {
   &...