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    Haskell really needs extensible records. But I’d like to do one thing above what Elm does.

    book   = { title = "Steppenwolf", author = "Hesse" }
    .title book

    The .title above should generate a functional Lens rather than just a getter value. Lenses form a category which means they allow composition. That means you can use them to access or update nested data structures. Awesome stuff.

    Anyway, that’s the plan for Roy: http://roy.brianmckenna.org/