Go 结构体内变量内存分配

type test struct {
    a int8
    b int8
    c int8
    d int8
}
n := test{
    1, 2, 3, 4,
}
fmt.Printf("n.a %p\n", &n.a)
fmt.Printf("n.b %p\n", &n.b)
fmt.Printf("n.c %p\n", &n.c)
fmt.Printf("n.d %p\n", &n.d)

输出

n.a 0xc00000a0b8
n.b 0xc00000a0b9
n.c 0xc00000a0ba
n.d 0xc00000a0bb

结构体内变量使用不同地址片段

 

type student struct {
    name string
    age  int
}

func main() {
    m := make(map[string]*student)
    stus := []student{
        {name: "pprof.cn", age: 18},
        {name: "测试", age: 23},
        {name: "博客", age: 28},
    }

    for _, stu := range stus {
        m[stu.name] = &stu
    }
    for k, v := range m {
        fmt.Println(k, "=>", v.name)
    }
}

输出

pprof.cn => 博客
测试 => 博客
博客 => 博客

实例化结构体数组，每个结构体指向同一块地址