Map over a functor

map is implemented differently for each functor, with each functor satisfying the functor laws.

Nonetheless this is set up so that unlike in Haskell, we use fmap (x, f) rather than fmap f x. The reason for this is to enable use of fmap() in native pipes without a placeholder, e.g. x |> fmap (\(a) a+2).

In contrast, the infix operator %<$>% works as in Haskell as this is more natural.

Usage

fmap(fnct, ...)

Arguments

x

A functor

f

A function to map