methods-with-pointer-receivers

Language: Gold, Platform: Echoes, Category: Tour of Go
https://github.com/remobjects/ElementsSamples/tree/master/Gold/Echoes/Tour of Go/methods-with-pointer-receivers

• methods-with-pointer-receivers.Echoes
  • References
    • #
  • Source Files
    • methods-with-pointer-receivers.go
  • Other Files

methods-with-pointer-receivers.go

// Ignored build directive: +build OMIT

package main

import (
	"fmt"
	"math"
)

type Vertex struct {
	X, Y float64
}

func (v *Vertex) Scale(f float64) {
	v.X = v.X * f
	v.Y = v.Y * f
}

func (v *Vertex) Abs() float64 {
	return math.Sqrt(v.X*v.X + v.Y*v.Y)
}

func main() {
	v := &Vertex{3, 4}
	fmt.Printf("Before scaling: %+v, Abs: %v\n", v, v.Abs())
	v.Scale(5)
	fmt.Printf("After scaling: %+v, Abs: %v\n", v, v.Abs())
}