Functor and applicative – Generalize function *application*. Monad – Generalizes *binding* (let). Arrow – Generalizes *function*.
@techtangents @missingfaktor Profunctor#lmap and Profunctor#rmap. Arrow is useless.
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@dibblego (&&&) ?Thanks. Twitter will use this to make your timeline better. UndoUndo
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