Files
the-way-to-go_ZH_CN/eBook/exercises/chapter_11/simple_interface.go

36 lines
416 B
Go
Executable File

// simple_interface.go
package main
import (
"fmt"
)
type Simpler interface {
Get() int
Put(int)
}
type Simple struct {
i int
}
func (p *Simple) Get() int {
return p.i
}
func (p *Simple) Put(u int) {
p.i = u
}
func fI(it Simpler) int {
it.Put(5)
return it.Get()
}
func main() {
var s Simple
fmt.Println(fI(&s)) // &s is required because Get() is defined with a receiver type pointer
}
// Output: 5