func shouldUseASCIISet(bufLen int) bool {
	return bufLen > 8
}

// containsRune is a simplified version of strings.ContainsRune
// to avoid importing the strings package.
// We avoid bytes.ContainsRune to avoid allocating a temporary copy of s.
func containsRune(s string, r rune) bool {
	for _, c := range s {
		if c == r {
			return true
		}
	}
	return false
}

	// true
	// false
	// false
}

func ExampleContainsRune() {
	fmt.Println(bytes.ContainsRune([]byte("I like seafood."), 'f'))
	fmt.Println(bytes.ContainsRune([]byte("I like seafood."), 'ö'))
	fmt.Println(bytes.ContainsRune([]byte("去是伟大的!"), '大'))
	fmt.Println(bytes.ContainsRune([]byte("去是伟大的!"), '!'))
	fmt.Println(bytes.ContainsRune([]byte(""), '@'))
	// Output:
	// true
	// false
	// true
	// true
	// false

func NewChecksumWithType(alg ChecksumType, value string) *Checksum {
	if !alg.IsSet() {
		return nil
	}
	wantParts := 0
	if strings.ContainsRune(value, '-') {
		valSplit := strings.Split(value, "-")
		if len(valSplit) != 2 {
			return nil
		}
		value = valSplit[0]
		nParts, err := strconv.Atoi(valSplit[1])
		if err != nil {
			return nil

	return
}

// Omit specify fields that you want to ignore when creating, updating and querying
func (db *DB) Omit(columns ...string) (tx *DB) {
	tx = db.getInstance()

	if len(columns) == 1 && strings.ContainsRune(columns[0], ',') {
		tx.Statement.Omits = strings.FieldsFunc(columns[0], utils.IsInvalidDBNameChar)
	} else {
		tx.Statement.Omits = columns
	}
	return
}

	}
	// This is valid for AWS S3 but it will never
	// work with file systems, we will reject here
	// to return object name invalid rather than
	// a cryptic error from the file system.
	return !strings.ContainsRune(object, 0)
}

// checkObjectNameForLengthAndSlash -check for the validity of object name length and prefis as slash
func checkObjectNameForLengthAndSlash(bucket, object string) error {

			if m.objSize == 0 {
				m.objSize = ei.V2Obj.Size
			}
			m.data = ei.V2Obj.EcM
			m.parity = ei.V2Obj.EcN
			if len(ei.V2Obj.PartNums) == 1 && !strings.ContainsRune(ei.V2Obj.MetaUsr.Etag, '-') {
				m.wantMD5 = ei.V2Obj.MetaUsr.Etag
			}
			if m.shards == 0 {
				m.shards = m.data + m.parity
			}
			idx = ei.V2Obj.EcIndex - 1