Algebird is perhaps exciting in the same way as a plane crash. The only "functional" thing about this library is its utterly pointless focus on the simple algeb

Algebird is perhaps exciting in the same way as a plane crash. The only "functional" thing about this library is its utterly pointless focus on the simple algebraic structures/typeclasses like monoids and semigroups that are shoe-horned into the API. Yes, it so happens that both HyperLogLog and BloomFilter admit some kind of monoidal structure, but that's hardly the interesting thing about them. What you get is a crappy API centered around the wrong abstraction. The whole thing feels like it was written by an intern who desperately wanted to use some algebra he learned in a freshmen class... Certainly the code quality supports that theory.