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130 lines
2.6 KiB
130 lines
2.6 KiB
package main
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import "fmt"
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const (
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MethodGet = "GET"
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MethodHead = "HEAD"
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MethodPost = "POST"
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MethodPut = "PUT"
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MethodPatch = "PATCH" // RFC 5789
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MethodDelete = "DELETE"
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MethodConnect = "CONNECT"
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MethodOptions = "OPTIONS"
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MethodTrace = "TRACE"
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)
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type Person struct {
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Name string
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Age int
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Contact struct {
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Phone, City string
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}
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}
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// 组合的使用，嵌入结构的使用，被嵌入的结构体相当于把自己所有属性给予了需要嵌入的结构体中
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type Hourman struct {
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Sex int
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}
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type Teacher struct {
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Hourman // 继承 Hourman 所有
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Name string
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Age int
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}
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type Student struct {
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Hourman // 继承 Hourman 所有
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Name string
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Age int
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}
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func main() {
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sr1 := Person{}
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fmt.Println(sr1)
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sr2 := Person{}
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sr2.Name = "Tinywan"
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sr2.Age = 24
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fmt.Println(sr2)
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sr3 := Person{
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Name: "Tinywan Default",
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Age: 25,
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}
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fmt.Println(sr3) // {Tinywan Default 25}
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A(sr3) // 传递值 {A Tinywan 25}
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fmt.Println(sr3) // {Tinywan Default 25}
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//传递指针
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sr4 := Person{
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Name: "Tinywan Default",
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Age: 25,
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}
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fmt.Println(sr4) // {Tinywan Default 25}
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B(&sr4) // 传递地址 &{Pointer B 25}
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fmt.Println(sr4) // {Pointer B 25}
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// 一般在结构体初始化的时候进行【取地址符号】，这时候被赋值的变量将会直接指向结构体的【指针】
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// 【推荐改写法】
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sr5 := &Person{ // 这里直接取地址
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Name: "Default",
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Age: 24,
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}
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fmt.Println("Update Before :", sr5)
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sr5.Name = "Update"
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B(sr5)
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C(sr5)
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fmt.Println("Update After :", sr5)
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// 匿名
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sr6 := &struct {
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Name string
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Age int
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}{
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Name: "nothing",
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Age: 26,
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}
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fmt.Println("%v %p", sr6, sr6)
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//匿名结构使用
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sr7 := Person{Name: "Name01", Age: 24}
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sr7.Contact.Phone = "13669361192"
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sr7.Contact.City = "GanSu"
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fmt.Println(sr7)
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// 赋值操作
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sr8 := Person{Name: "Name008", Age: 26}
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var b Person // 这里必须声明为为Person的类型
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b = sr8
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fmt.Println(sr8) // {Name008 26 { }}
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fmt.Println(b) // {Name008 26 { }}
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// 嵌入和组合的使用
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te := Teacher{Name: "Student Teacher", Age: 48, Hourman: Hourman{Sex: 1}} //初始化操作
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st := Student{Name: "Wan Student", Age: 24, Hourman: Hourman{Sex: 2}}
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// update
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te.Name = "2018 Name"
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te.Age = 12
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te.Sex = 0
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fmt.Println(te, st) // {{0} 2018 Name 12} {{2} Wan Student 24}
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}
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// 传值引用
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func A(person Person) {
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person.Name = "A Tinywan"
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fmt.Println(person) // {A Tinywan 25}
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}
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//
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func B(person *Person) {
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person.Name = "Pointer B "
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fmt.Println(person)
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}
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func C(person *Person) {
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person.Name = "Pointer C "
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fmt.Println(person)
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}
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