Method ZRange

structure/zset.go:754–768

ZRange retrieves a specific range of elements from a sorted set (ZSet) denoted by a specific key. It returns a slice of ZSetValue containing the elements within the specified range (inclusive), and a nil error when successful. The order of the returned elements is based on their rank in the set, no

(key string, start int, end int)

//
// This method is part of the ZSetStructure type.
func (zs *ZSetStructure) ZRange(key string, start int, end int) ([]ZSetValue, error) {
	if err := checkKey(key); err != nil {
		return nil, err
	}
	keyBytes := stringToBytesWithKey(key)

	zSet, err := zs.getZSetFromDB(keyBytes)
	if err != nil {
		return nil, err
	}
	r := zSet.skipList.getRange(start, end, false)

	// rank zero means no rank found
	return r, nil
}

// ZCount traverses through the elements of the ZSetStructure based on the given key.
// The count of elements between the range of min and max scores is determined.