misc.go

func NilInterface(i interface{}) bool {
	iVal := reflect.ValueOf(i)

	switch iVal.Kind() {
	case reflect.Invalid:
		return i == nil
	case reflect.Chan, reflect.Map, reflect.Slice, reflect.Interface, reflect.Func:
		fallthrough
	case reflect.Ptr, reflect.UnsafePointer:
		return iVal.IsNil()
	default:
		return false
	}
}