go装饰模式

直接上代码：

package main

import "fmt"

type diaosi struct {
}

func (b *diaosi) LUALU() {
    
}

type decorator struct {
    *diaosi
    LUALU func()
}

func decorat(b *diaosi) (d *decorator) {
    d = &decorator{b, nil}
    d.LUALU = func() {
        fmt.Println("take off trousers...")
        b.LUALU()
        fmt.Println("take on trousers...")
    }   
    return
}

func main() {
 
    b := &diaosi{}
    b.LUALU()

    fmt.Println("===========")

    c := decorat(b)
    c.LUALU()
  }