Crystal is one of my most productive language for small project web oriented (Slack bot): a cleanup Ruby with added benefits (performance, type safety, null saf

Crystal is one of my most productive language for small project web oriented (Slack bot): a cleanup Ruby with added benefits (performance, type safety, null safety, proper concurrency). My only complaints: * compilation speed * type inference is sometimes not intuitive (class members * too OOP oriented (no constness, no UFCS/pipeline, no general monad operator,...etc)