the-way-to-go_ZH_CN/eBook/examples/chapter_8/map_func.go

// map_func.go
package main
import "fmt"

func main() {
	mf := map[int]func() int{
		1: func() int { return 10 },
		2: func() int { return 20 },
		5: func() int { return 50 },
	}
	fmt.Println(mf)
}
// Output:  map[1:0x10903be0 5:0x10903ba0 2:0x10903bc0]