standard/test/t1/main.go

package main

type Animal interface {
	GetName() string
	GetAge() int
}
type Person struct {
	name string
	age  int
}

func (p *Person) GetName() string {
	return p.name
}
func (p Person) GetAge() int {
	return p.age
}
func main() {
	// 定义的接口变量
	var ani Animal
	// person 实现了 Animal 接口，赋值给了 ani 变量
	// 但是，这里编译会通不过，错误如下：
	// Cannot use 'Person{ name: "DaYu", age: int(28), }' (type Person) as the type Animal Type does not implement 'Animal' as the 'GetName' method has a pointer receiver
	ani = Person{
		name: "DaYu",
		age:  28,
	}
	ani.GetName()
	ani.GetAge()
}