Go中的其他匿名字段和同名字段

// code_016_struct_anonymous_field2 project main.go
package main

import (
	"fmt"
)

type Person struct {
	name string
	sex  byte
	age  int
}

type Student struct {
	Person
	id   int
	addr string
	name string //同名字段
}

type mystr string //自定义类型

type Student01 struct {
	Person
	int
	mystr
}

type Person02 struct {
	name string
	sex  byte
	age  int
}

type Student02 struct {
	*Person02 //匿名字段，结构体指针
	id        int
	addr      string
}

func main() {
	//1）同名字段的使用
	var s Student
	s.name = "ck_god" //默认给最外层的成员赋值
	fmt.Printf("%+v\n", s)

	s.Person.name = "god_girl" //显示调用
	fmt.Printf("%+v\n", s)

	//2) 其他匿名字段
	s1 := Student01{Person{"ck_god", 1, 18}, 1, "wz"}
	fmt.Printf("%+v\n", s1)

	//非结构体类型的匿名成员的操作
	fmt.Printf("%s,%c,%d,%d,%s\n",
		s1.name, s1.sex, s1.age, s1.int, s1.mystr)

	//3)结构体指针类型
	s3 := Student02{&Person02{"ck_god", 0, 18}, 1, "bj"}
	fmt.Printf("%+v\n", s3)
	fmt.Printf("%s,%c,%d\n", s3.name, s3.sex, s3.age)

	var s2 Student02
	s2.Person02 = new(Person02) //分配空间
	s2.name = "ck"
	s2.sex = 1
	s2.age = 20

	s2.id = 2
	s2.addr = "sz"

	fmt.Println(s2.name, s2.sex, s2.age, s2.id, s2.age)
}

输出结果如下：

{Person:{name: sex:0 age:0} id:0 addr: name:ck_god}
{Person:{name:god_girl sex:0 age:0} id:0 addr: name:ck_god}
{Person:{name:ck_god sex:1 age:18} int:1 mystr:wz}
ck_god,
,18,1,wz
{Person02:0xc000004480 id:1 addr:bj}
ck_god,,18
ck 1 20 2  20