golang 值和指针

地址copy,引用copy

func addressCopy() {
    i := 7
    j := &i
    i = 10
    fmt.Println(i, *j)//10 10
}

值copy

func valueCopy() {
    i := 7
    j := i
    i = 10
    fmt.Println(i, j)//10 7
}