[Haskell-cafe] Left fold enumerator - a real pearl overlooked?

Andrew Wagner wagner.andrew at gmail.com
Sat Feb 28 13:29:09 EST 2009


Can someone point us to some resources about these? I for one have not heard
of them before

On Sat, Feb 28, 2009 at 12:59 PM, Johan Tibell <johan.tibell at gmail.com>wrote:

> On Sat, Feb 28, 2009 at 5:08 PM, Gü?nther Schmidt <gue.schmidt at web.de>
> wrote:
> > Hi all,
> >
> > in the last few months I was looking for haskell database library,
> > eventually settling for HDBC (thanks John btw).
> >
> > Takusen also caught my eye although I even failed installing it.
> >
> > Nevertheless a particular property of takusen, left-fold-enumerator, also
> > sparked  my interest and I tried to follow it up.
> >
> > I had the impression this is something of relevance but something that is
> > not mentioned or made use of often. There are actually only a few
> references
> > on the net and most of those by one person only, Oleg.
> >
> > There was one post from John Goerzen about Haskell HTTP libraries in
> which
> > he hinted using left-fold enumerators.
> >
> > Anyway what I'm saying is that the whole topic is somewhat off the radar
> of
> > the larger haskell community, how come, or am I merely overestimating its
> > relevance and usefulness?
>
> A couple of people (me included) have been discussing different
> possible designs outside this mailing list. I think we're getting a
> better understanding of the design space but I feel like there's more
> to be discovered which is probably the reason none of us have release
> a library that makes use of left fold enumerators.
>
> Cheers,
>
> Johan
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