63 lines
981 B
Go
63 lines
981 B
Go
package main
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import "fmt"
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// 本质是一个指针
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type AnimalIF interface {
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Sleep()
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GetColor() string // 获取颜色
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GetType() string // 获取种类
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}
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// 定义具体的类
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type Cat struct {
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color string // 颜色
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}
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func (this *Cat) Sleep() {
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fmt.Println("Cat is sleep")
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}
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func (this *Cat) GetColor() string {
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return this.color
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}
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func (this *Cat) GetType() string {
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return "Cat"
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}
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type Dog struct {
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color string
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}
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func (this *Dog) Sleep() {
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fmt.Println("Dog is sleep")
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}
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func (this *Dog) GetColor() string {
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return this.color
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}
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func (this *Dog) GetType() string {
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return "Dog"
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}
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func showAnimal(animal AnimalIF) {
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animal.Sleep()
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fmt.Println("color = ", animal.GetColor())
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fmt.Println("type = ", animal.GetType())
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}
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func main() {
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var animal AnimalIF // 接口数据类型（父类指针）
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animal = &Cat{"green"}
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animal.Sleep()
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animal = &Dog{"yellow"}
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animal.Sleep()
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cat := Cat{"gray"}
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dog := Dog{"black"}
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showAnimal(&cat)
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showAnimal(&dog)
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}
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