Function IsZeroValue

validator/validator.go:449–479

IsZeroValue checks if value is a zero value. Play: https://go.dev/play/p/UMrwaDCi_t4

(value any)

// IsZeroValue checks if value is a zero value.
// Play: https://go.dev/play/p/UMrwaDCi_t4
func IsZeroValue(value any) bool {
	if value == nil {
		return true
	}

	rv := reflect.ValueOf(value)
	if rv.Kind() == reflect.Ptr {
		rv = rv.Elem()
	}

	if !rv.IsValid() {
		return true
	}

	switch rv.Kind() {
	case reflect.String:
		return rv.Len() == 0
	case reflect.Bool:
		return !rv.Bool()
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		return rv.Int() == 0
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
		return rv.Uint() == 0
	case reflect.Float32, reflect.Float64:
		return rv.Float() == 0
	case reflect.Ptr, reflect.Chan, reflect.Func, reflect.Interface, reflect.Slice, reflect.Map:
		return rv.IsNil()
	}

	return reflect.DeepEqual(rv.Interface(), reflect.Zero(rv.Type()).Interface())
}

// IsGBK check if data encoding is gbk
// Note: this function is implemented by whether double bytes fall within the encoding range of gbk,