[Haskell-cafe] Applicative is like an Arrow

Brandon Allbery allbery.b at gmail.com
Fri Aug 16 16:52:14 CEST 2013


On Fri, Aug 16, 2013 at 10:49 AM, Tom Ellis <
tom-lists-haskell-cafe-2013 at jaguarpaw.co.uk> wrote:

> On Fri, Aug 16, 2013 at 10:26:42AM -0400, Brandon Allbery wrote:
> > My understanding is that there's a rework of Arrow in progress that may
> > change this in the future, since *theoretical* Arrows are more distinct,
> > flexible and useful than the current implementation.
>
> I'd like to know more about that if you can provide any references.  I am
> using
> arrows very heavily.
>

It's been mentioned (but not much more) in #haskell IRC, so I don't know
details. I also expect it's not going to simply replace the current one, at
least not initially; and I think it's supposed to maintain compatibility
with the current Arrow because that's just a specialization to the function
arrow.

-- 
brandon s allbery kf8nh                               sine nomine associates
allbery.b at gmail.com                                  ballbery at sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net
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