slice常见编程错误集

一、append是深拷贝，

func main() {
	a := []int{7, 8, 9}
	fmt.Printf("%+v\n", a)
	ap(a)
	fmt.Println("==", a)
	app(a)
	fmt.Println("-a-a", a)

}
func ap(a []int) {
	a = append(a, 10)
}

func app(a []int) {
	a[0] = 1
}