fmap is a much more general concept.. I just want to be able to use map (or another term, like project) over "enhanced" lists. Such "enhanced" lists aren't Monads, btw, because I can't write a meaningful return/unit function: to put the list in context, I always need a context to be provided.

Giacomo

On Fri, May 31, 2013 at 11:34 AM, Nadir Sampaoli <nadirsampaoli@gmail.com> wrote:

Hi, I'm very new to Haskell and I don't know about head, take, etc. but I think the `Functor` class (and its `fmap` function) provides the abstraction for `map` (which, in my understanding, can be considered the list-specific `fmap`).

2013/5/31 Giacomo Tesio <giacomo@tesio.it>

I'm looking for a class abstracting Data.List. I mean something that enable the use of say head, map, take and so on into different kind of types.

Is there already something like that?

Giacomo

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Nadir

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