package web import ( "fmt" "net/http" ) func panic_if(err error) { if err != nil { panic(err) } } func (app *Application) error_400(w http.ResponseWriter, r *http.Request, msg string) { http.Error(w, fmt.Sprintf("Bad Request\n\n%s", msg), 400) } func (app *Application) error_404(w http.ResponseWriter, r *http.Request) { http.Error(w, "Not Found", 404) } func (app *Application) error_500(w http.ResponseWriter, r *http.Request, err error) { panic("TODO") }