get Count
Gets the current number of items in the Cuckoo filter. Can be higher than the max number of keys the filter was created to store if it is running over expected maximum fill capacity. If you need to know the absolute maximum number of items this filter can contain, call #getActualCapacity()
. If you just want to check how full the filter is, it's better to use #getLoadFactor()
than this, which is bounded at 1.0
Return
number of items in filter