golang如何获得一个变量的类型

fmt.Println(reflect.TypeOf(var)) 

func typeof(v interface{}) string {
    return fmt.Sprintf("%T", v)
}

func typeof(v interface{}) string {
    return reflect.TypeOf(v).String()
}

func typeof(v interface{}) string {
    switch v.(type) {
    case int:
        return "int"
    case float64:
        return "float64"
    //... etc
    default:
        return "unknown"
    }
}

fmt.Println(reflect.TypeOf(var))  
switch xxx.(type){
  case int:....
  case float32:...
  case float64:...
  case string:...
}