func-conve.go

package main

import "fmt"

type Config struct {
	name string
}

type translator func(arg ...interface{}) *Config

func wrapper(tr translator, arg ...interface{}) {
	out := tr(arg...)
	for _, a := range arg {
		fmt.Printf("mapping from %v -> %v\n", a, out)
	}
}

func translateInteger(a ...interface{}) *Config {
	return &Config{
		name: fmt.Sprintf("%v-%v", a[0], a[1]),
	}
}

func translateSingle(a int) *Config {
	return nil
}

func translateTwo(a, b int) *Config {
	return nil
}

func wraqq(f interface{}, a ...int) {
	f1, ok := f.(func(int) *Config)
	if ok {
		f1(a[0])
	}
	f2, ok := f.(func(int, int) *Config)
	if ok {
		f2(a[0], a[1])
	}
}

func checkq(g interface{}) {
	_, ok := g.(func(int, int) *Config)
	fmt.Println("ok or not ", ok)
}
func main() {
	f := translateInteger
	wrapper(f, 3, 4)
	wraqq(translateTwo, 2, 1)
	checkq(translateSingle)
	checkq(translateTwo)
}