varref.go

package main

import (
	"fmt"
	"reflect"
)

type Bstruct struct {
	n float64
}

func (b *Bstruct) M() {
	fmt.Println("hello world")
}

func F() {
	reflect.ValueOf(&Bstruct{ 2.0 }).MethodByName("M").Call(nil)
}

var f = F

func main() {
	f()
}