Viewing profile — Muphrid

That operation is called fmap, and it's characteristic of a functor. In Haskell, it's called liftM for monads, but they're really the same thing (and I think recent proposals are g…

No, plain functors, applicative functors, and monads each deal with a different potential use case. Look at the specific type signatures: plain functor - fmap: (a -> b) -> (F a -> …

The order of operations here is "right associative". So A -> B -> C -> D is equivalent to any of the following A -> (B -> C -> D) A -> (B -> (C -> D)) A -> B -> (C -> D) They're eq…

Whoever told you it has to do with IO and functional purity vastly oversimplified things. That is just one use case. Monads take care of a very common computation pattern: wrapping…