On 6/25/11 6:51 AM, John Lato wrote:
> Honestly I'm quite dis-satisfied with the current state of code which
> depends on iteratee/enumerator. It's nearly all written in a very
low-level
> style, i.e. directly writing 'liftI step', or 'case x of Yield -> ...'.
> This is exactly what I would hope users could avoid, by using the functions
> in e.g. Data.Iteratee.ListLike.
>
> I've recently added more functions to iteratee which greatly reduce the
need
> for this type of code. I don't know about enumerator, but I expect it
isn't
> rich enough since most user code I've seen is pretty low-level.

I have a rather large suite of list-like functions for the old version of
iteratee (used by a project I've been working on for a while). Once I get
the time to convert the project to the newer iteratee, I'll send a patch
with any you're still missing.

I'd greatly appreciate it. Even if they're for the old version; doing the conversion is fairly mechanical.

(Though, admittedly, I'm not terribly keen on ListLike. The classes still
seem too monolithic and ad-hoc. Though I'm not sure there's a way around
that without something closer to ML's functor modules.)

Refactoring ListLike has been a long-standing objective of mine, but I haven't put much time into it because it would cause breaking changes which I didn't think anyone else would appreciate. No way to tell except to just release it I guess.

John