the-way-to-go_ZH_CN/eBook/examples/chapter_8/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)
}