Go Basics: Method Related

Method related

method is a special function with the reciever parameter.

https://tour/golang.org Package Main

Import ("FMT" "math")

Type Vertex struct{

X, Y float64

}

There's no class concept in Go

method, a function with the parameters of the recipient

Func (v Vertex) AbsMethod1 () float64 {

return Math. SQRT (v.x*v.x + v.y*v.y)

}

function ordinary Functions,

Func AbsFunc1 (v Vertex) float64{

return Math. SQRT (v.x*v.x + v.y*v.y)}

Zoom method, with receiver

Func (v *vertex) Scalemethod (f float64) {

v.x = v.x * F v.y = v.y * F}

Zoom, function, and pointers, where the pointer is more like a reference

Func Scalefunc (v *vertex, f float64) {

v.x *= F v.y *= F}

Func Main () {

V: = vertex{3, 4}

Fmt. Println ("=====method abs=", V.absmethod ())

Fmt. Println ("=====function Abs =", AbsFunc1 (v))

V.scalemethod (Ten) fmt. Println ("vvvv===", V)

Fmt. Println (V.absmethod ()) Scalefunc (&v, 2)

Fmt. Println (v)

P: = &v p.absmethod1 ()//Here P.absmethod1 () is interpreted as (*p). ABSMETHOD1 ()

}

Go Basics: Method Related