method_expressions.go

package main

import "fmt"
import "reflect"

var fp = fmt.Println

func main() {

	methodExpressionPlay2()
}

//The expression Foo.A yields a function equivalent to A but with an explicit receiver as its first argument; it has signature func(f Foo).
type Foo int

func (f Foo) A() {
	fmt.Println("A")
}
func (f Foo) B() {
	fmt.Println("B")
}
func (f Foo) C() {
	fmt.Println("C")
}

var f Foo

func methodExpressionPlay2() {

	bar := func(m func(f Foo)) {
		m(f)
	}
	bar(Foo.A)
	bar(Foo.B)
	bar(Foo.C)
}

func methodExpressionPlay() {

	var f Foo

	bar := func(m func()) {
		m()
	}
	bar(f.A)
	bar(f.B)
	bar(f.C)

}


func methoExpressionPlayReflect() {
	var f Foo
	bar := func(name string) {
		reflect.ValueOf(f).MethodByName(name).Call(nil)
	}
	bar("A")
	bar("B")
	bar("C")
}