A Tour of Go Methods

標籤：style   blog   color   ar   sp   div   on   log   bs   

Go does not have classes. However, you can define methods on struct types.

The method receiver appears in its own argument list between the func keyword and the method name.

package main import (    "fmt"    "math")type Vertex struct {    X, Y float64}func (v *Vertex) Abs() float64 {//相當於給類添加方法    return math.Sqrt(v.X * v.X + v.Y * v.Y)}func main() {    v := &Vertex{3, 4}    fmt.Println(v.Abs())}

 

A Tour of Go Methods