func main() {
z, err := expr.EvalString(strings.Join(os.Args[1:], " "))
if err != nil {
fmt.Fprintln(os.Stderr, err)
} else {
fmt.Println(z)
}
}
func CalcServer(w http.ResponseWriter, req *http.Request) {
req.ParseForm()
if q := req.Form.Get("q"); q != "" {
if x, err := expr.EvalString(q); err == nil {
req.Form.Set("q", x.String())
} else {
req.Form.Set("e", err.Error())
}
}
req.Form.Set("r", serveRoute)
templ.Execute(w, req.Form)
}