On May 9, 2013, at 10:36 PM, Conal Elliott co...@conal.net wrote:
BTW, have you see the new paper The constrained-monad problem? I want to
investigate whether its techniques can apply to Category friends for linear
maps and for circuits. Perhaps you’d like to give it a try as well. I got to
Hi Conal,
I have a package data-category that should be able to do this.
http://hackage.haskell.org/package/data-category
I tried implementing your linear map, and this is the result:
https://gist.github.com/sjoerdvisscher/5547235
I had to make some changes to your linear map data type,
Hi Sjoerd,
Thanks very much for the help sorting out options for more flexibility in
Category instances. I like how you spotted and removed the id problem.
I’ve cloned your gist https://gist.github.com/conal/5549861 and tried out
an idea to simplify verifying the required constraints on linear
Hi Conal,
I’ve cloned your gist and tried out an idea to simplify verifying the
required constraints on linear map values.
Lovely use of view patterns! It looks like it is not necessary to store the LM
value, all that is needed is to store that VS2 s a b is satisfied.
Am I right in thinking
I'm using a collection of classes similar to Category, Arrow, ArrowChoice,
etc (though without arr and with methods like fst, snd, dup, etc). I think
I need some associated constraints (via ConstraintKinds), so I've tried
adding them. However, I'm getting terribly complex multiplication of these
In John Hughes's Programming With Arrows
(http://www.cs.chalmers.se/~rjmh/afp-arrows.pdf), he discusses a
stream function type
newtype SF a b = SF {runSF :: [a] - [b]}
and gives
instance Arrow SF where
He gives some examples using this, and everything seems to go just fine.
But in Ross
Hello,
In John Hughes's Programming With Arrows
(http://www.cs.chalmers.se/~rjmh/afp-arrows.pdf), he discusses a
stream function type
newtype SF a b = SF {runSF :: [a] - [b]}
and gives
instance Arrow SF where
He gives some examples using this, and everything seems to go just fine.
I
