Method Expression with Go

method.go

package main

import (
	"fmt"
	"reflect"
)

type T struct {
	Message string
}

func (t T) String() string {
	return fmt.Sprintf("message: %v", t.Message)
}

func (t *T) SetMessage(message string) {
	t.Message = message
}

func main() {
	t := &T{"Hello World!"}
	fmt.Println(reflect.TypeOf(t.String))
	fmt.Println(t)

	f := T.String
	fmt.Println(reflect.TypeOf(f))
	fmt.Println(f(*t))

	fmt.Println(T.String(*t))
	(*T).SetMessage(t, "My New Hello World!")
	fmt.Println(T.String(*t))
}

go run method.go