Interesting, but not quite the same: Xor and binary fuse filters require access to the full set of keys at construction time. In this sense, they are immutable

Interesting, but not quite the same: Xor and binary fuse filters require access to the full set of keys at construction time. In this sense, they are immutable. Alternatives have typically a fixed memory usage and a maximal capacity, but they also allow more flexibility such as progressive construction (adding keys one by one).