AImager

a := [3]int {1, 2, 3}
for i, v := range a{ //i,v从a复制的对象里提取出
    if i == 0{
        a[1], a[2] = 200, 300
        fmt.Println(a) //输出[1 200 300]
    }
    a[i] = v + 100 //v是复制对象里的元素[1, 2, 3]
}