2022-07-28: what is the output of the following go language code? A：AA； B：AB； C：BA； D：BB。 package main import ( “fmt“ ) func main() { f

2022-07-28： following go What language code outputs ？A：AA;B：AB;C：BA;D：BB.

package main

import (
    "fmt"
)

func main() {
    
    f := func() {
     fmt.Print("A") }
    defer f()
    f = func() {
     fmt.Print("B") }
    defer f()
}

Answer selection C. Although it's all f, But there are two assignment operations , So twice f Not the same f.