Method BitCount

db/string.go:235–241

BitCount counts the number of set bits (population counting) in a string.

(begin, end int)

// BitCount counts the number of set bits (population counting) in a string.
func (s *String) BitCount(begin, end int) (int, error) {
	begin, end = initCursor(begin, end, len(s.Meta.Value))
	if begin > end {
		return 0, nil
	}
	return redisPopcount(s.Meta.Value[begin : end+1]), nil
}

// BitPos finds first bit set or clear in a string
func (s *String) BitPos(bit, begin, end int) (int, error) {