A modern programming language that makes developers happier.

kotlinlang

I have my idea confused about theory( reading some book/research, cause my colleagues say that I gamble too much ), guys RX kotlin is a declarative/functional way to do things right? So in principle we should use recursion instead of `predicate.forEach{ it.lalalala}`  as works in Haskell, shouldn’t I?  _{Anyway i found this functional thing really strange because it looks to me that you have an input and output also in a normal method as conceived in the OO theories of Mr. Kay. Please help me I am confused, If I do not understand the theory I cannot go further._