type关键字
https://studygolang.com/articles/17179
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| package main
// 1. 定义结构体
type person struct {
name string
age int
}
func main(){
p := person{"hello",12}
p1 := person{"hello"}
fmt.Println(p.age,p.name)
fmt.Println(p1.name,p1.age)
}
// 2. 类型等价定义，相当于类型重命名
type name string
func main(){
var myname name = "zhangyi"
//l := []byte(myname)
fmt.Println(myname)
}
// 3. 结构体内嵌匿名成员
type person struct {
string
age int
}
func main(){
p := person{"nihao",12}
p2 := person{string:"world",age:18}
fmt.Println(p.string,p2.string)
}
// 4.接口类型定义
type Personer interface {
Run()
Name() string
}
type person struct {
name string
age int
}
func (person) Run(){
fmt.Println("run")
}
func (p person) Name() string{
return p.name
}
func main(){
var p Personer
fmt.Println(p)
p = person{"hello",12}
p.Run()
fmt.Println(p.Name())
var p2 person = p.(person)
fmt.Println(p2.age)
if p3,ok := p.(person); ok{
fmt.Println(ok)
fmt.Println(p3.age)
}
}
// 5.定义函数类型
type handler func(name string) int
func (h handler) add(name string) int{
return h(name) + 10
}
|