Yes, the concepts are pretty old. For a lot of people newer to programming, Haskell is the first language that compels them to be understood. That’s what I mean

Yes, the concepts are pretty old. For a lot of people newer to programming, Haskell is the first language that compels them to be understood. That’s what I meant by “popularized”, to clarify. Changed it now to “evangelized”, to make the comment more clear. I’d typed a whole paragraph on LISP, but deleted it because I’ve seen that whole regurgitation of history play out so many times on HN. :) My comment was looking at Haskell as the standard bearer for FP, but it’s not of course. I agree that lazy evaluation and rigorous type safety are what Haskell is best known for nowadays, especially since its less controversial components have found their way into most conventional programming languages by now.