gistfile1.go

package main

import "fmt"

type Handle interface {
    ServeHTTP(c *int, req *int)
}

func NotFound(c *int, req *int) {
}

type HandleFunc func(c *int, req *int)

func (f HandleFunc) ServeHTTP(c *int, req *int) {
    f(c, req)
}

type HandleImpl struct {
}

func (hi HandleImpl) ServeHTTP(c *int, req *int) {
}

func main() {
    var Handle404 = HandleFunc(NotFound)
    var hi HandleImpl
    fmt.Printf("%v %v\n", Handle404, hi)
}