GO语言 切片的缩短和增长原理

package main

import "fmt"
//import  OS   "os"
//import "strings"
//import "path/filepath"

type Stack []interface{}

func (s *Stack)f() {
stack := *s

fmt.Printf("%p %d %d\n", &s, len(stack), cap(stack))

*s = stack[:len(stack) - 1] //减少

fmt.Printf("%p %d %d\n", &s, len(*s), cap(*s))

fmt.Printf("%p %d %d\n", stack, len(stack), cap(stack))

stack = append(stack, "e", "f") //增加

fmt.Printf("%p %d %d\n",stack, len(stack), cap(stack))
}

func main() {
var  s Stack
s = append(s, "a", "b", "c", "d")
s.f()
fmt.Println(s)
fmt.Printf("%t\n", false)
}