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Re:Becoming Productive in Haskell by lmm on Friday April 24, 2015 @08:48AM (#9432931)
There's no subset, no garbling; Functor literally has one member, map (fmap in Haskell but that's a historical artefact).
Re:Becoming Productive in Haskell by dllthomas on Friday April 24, 2015 @12:09PM (#9434250)
More specifically, a pedagogical artifact. Originally, fmap was spelled map. The list-specialized map was added to make teaching easier.