Information about a non-empty bucket.
Sorting criterium: Makes .sort of an array of this struct sort the elements by .length in descending order.
Bucket index, the index of the bucket in the array of buckets. It is meaningful only if length > 0 so for easier bug detection the initial value is an out-of-range index.
Bucket length, the number of elements in the bucket. 0 means that the bucket is empty.
See Implementation
Information about a non-empty bucket.