Haven't done it all that long, after C# I first went Go for a few years, and spent much time with GL shaders and such too. Haven't done such "real-world" stuff

Haven't done it all that long, after C# I first went Go for a few years, and spent much time with GL shaders and such too. Haven't done such "real-world" stuff (with a proper server side, client side, data side etc) in Haskell either --- yet. It's not immediately productivity-inducing at all. I think over the very long haul, prolonged intensive exposure makes many a developer of "mainstream/web/crud/mvp/etc extractions" a much more rigorous, precise, exacting practitioner, which will yield a hard-to-quantify, harder-to-capitalize-on, but still very real and more substantive/deeper/sustained "productivity boost". It also teaches one to think of more robust patterns of abstraction and generalization which can translate back into programming-in-other-languages. Nothing more tangible than that to report. Also there's a lot of curious-researcher-type "playfulness" in the wider ecosystem that's very tricky to assess what this will actually buy the "let's get coding" "brogrammer" (such as I)! One facet that makes it quite worthwhile is that the language/compiler/ecosystem has incredibly bright people contributing not just by devising yet another funky undecipherable combinator for saving 10 lines of code in once-a-decade scenarios, but in fact actual hardcore pedal-to-the-metal under-the-hood optimizations, code check/test/validation assistence tools, keeping it all somewhat performant in server/parallel/concurrent scenarios and so on.