golang interface

gist

package main

import (
	"fmt"
)

type Animal struct {
    Cat string
    Dog string
}

func newAnimal() *Animal {
    return &Animal {
        Cat:    "cat",
        Dog:    "dog",
    }
}

type Count interface {
    One()   string
    Two()   string
}

func(a Animal) One() string{
    return  "one"
}

func(a Animal) Two() string{
    return  "two"
}


func main() {
    a := newAnimal()
    c := Count(a)
    fmt.Println(a.Cat)
    fmt.Println(a.Dog)
    fmt.Println(c.One())
    fmt.Println(c.Tow())
}