mixture-of-field.go

package main

import "fmt"

type Human struct {
	Age  int
	Name string
	Walk func(place string)
}

func (h Human) String() string {
	return fmt.Sprintf("%s[%d]", h.Name, h.Age)
}

func (h Human) Run(distance int) {
	fmt.Printf("%s run %dm\n", h, distance)
}

func (h Human) Dash(distance int) {
	fmt.Printf("%s dash %dm\n", h, distance)
}

type Runner interface {
	Run(distance int)
	Dash(distance int)
}

func Goal(r Runner) {
	r.Run(10)
	r.Dash(50)
}

type Kid struct {
	Human
	School string
}

type Athlete interface {
	Runner
}

func main() {
	a := Human{Age: 10}
	b := Kid{Human{Age: 20}, School: "Jingu"}
	Goal(a)
	Goal(b)
}

$ go run mixture-of-field.go 
# command-line-arguments
./mixture-of-field.go:44: mixture of field:value and value initializers