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      This stuff doesn’t get written because people are stupid. It solves real problems people have, and it’s the easiest way to solve them in a language that’s fundamentally inadequate. When people think HKT or monads or what-have-you aren’t necessary in a language, I point them at Spring for the examples of what happens when a language doesn’t have them.

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      For the lack of a nail,
          throw new HorseshoeNailNotFoundException("no nails!");
      For the lack of a horseshoe,
      For the lack of a horse,
            new BroadcastMessage(StableFactory.getNullHorseInstance()));


    3. 1

      Mamas (and papas) don’t let your babies grow up to be Java developers….