Method removeAt

core/src/main/java/io/questdb/std/ObjHashSet.java:206–240

(int index)

    }

    private void removeAt(int index) {
        if (index < 0) {
            int from = -index - 1;
            erase(from);
            free++;

            // after we have freed up a slot
            // consider non-empty keys directly below
            // they may have been a direct hit but because
            // directly hit slot wasn't empty these keys would
            // have moved.
            //
            // After slot if freed these keys require re-hash
            from = (from + 1) & mask;
            for (
                    T key = keys[from];
                    key != noEntryKey;
                    from = (from + 1) & mask, key = keys[from]
            ) {
                int idealHit = Hash.spread(key.hashCode()) & mask;
                if (idealHit != from) {
                    int to;
                    if (keys[idealHit] != noEntryKey) {
                        to = probe(key, idealHit);
                    } else {
                        to = idealHit;
                    }

                    if (to > -1) {
                        move(from, to);
                    }
                }
            }
        }
    }
}