More than a couple of people have asked me to talk about what it's like to program in Haskell. As a first attempt, here's a little window into the experience via something incredibly banal, but IMO hugely motivating.
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Fun addendum that illustrates now noob I still am: I've actually used <|> a bunch because of parsec, but until now erroneously thought it was parsec-specific (thanks to the similarity to BNF's pipe). it's super-obvious now that <|> is big-F Fundamental
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), popped back a set of results, the second of which is exactly equivalent to my `orElse`:
<|>, defined in Control.Applicative: 
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Well, the whole story was about my discovering <|> as a replacement for my own Maybe-only impl I haven't used it with Either, but surely will after last night
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There is no Alternative for Either because there is no empty. Have a look at Data.Functor.Alt.
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