LESSON 283 OF 671 · FUNCTIONS & CLASSES

Member Functions in Go

Lesson

TL ; DR:

A method is a function with a receiver declared for a struct. It can read and write the struct's fields.

Define methods with a receiver so they can be called on struct values:

type Dog struct {
    name string
}

func NewDog(name string) Dog {
    return Dog{name: name}
}

func (d Dog) bark() {
    fmt.Printf("Woof! I am %s\n", d.name)
}

Call it on a value with the dot operator: dog.bark()

Full lesson:

So far you've added data to a struct with fields and a constructor function. The other half of OOP is behavior — actions a value can perform. That's what methods are for.

Your task

Add a bark() method that prints "Woof! I am " followed by the dog's name.

Woof! I am Rex

STEP 1 OF 4

Guided

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