go多态

go多态

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package main   import (     "fmt" )   type Animal interface {     Speak() string }   type Dog struct { }   func (d Dog) Speak() string {     return "Woof!" }   type Cat struct { }   func (c Cat) Speak() string {     return "Meow!" }   func main() {     animals := []Animal{Dog{}, Cat{}}     for _, animal := range animals {         fmt.Println(animal.Speak())     } }