HandlerFunc is not a struct. You probably wanted to do this (line 17):
demo := HandlerFunc(Add)
i see this:--
type HandlerFunc func(ResponseWriter, *Request) // ServeHTTP calls f(w, r). func (f HandlerFunc) ServeHTTP(w ResponseWriter, r *Request) { f(w, r) }
and i imitate it, but can't compile:
package main
import "fmt"
type Handler interface {Call(x, y int)}func Add(x, y int) {fmt.Println(x+y)}type HandlerFunc func(x, y int)
func (f HandlerFunc) Call(x, y int) {f(x, y)}func main() {demo := HandlerFunc{}var i Handleri = demoi.Call(1, 2)}
[john@localhost gweb]$ go run demo.go
# command-line-arguments./inspiration_by_golang_http.go:17: invalid type for composite literal: HandlerFunc
i do not understand it, this is way ?
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