On Fri, Jul 13, 2012 at 8:11 AM, Ross Paterson r...@soi.city.ac.uk wrote:
On Thu, Jul 12, 2012 at 02:47:57PM +0100, Ross Paterson wrote:
Though one possibility that might get
us most of the way there would be to refactor the Arrow class as
class PreArrow a where
premap :: (b - b') - a
Are there any such matrix algorithms that operate mainly from the start or
end or rows and columns?
Note: If the access pattern starts from the end of a row then one stores
the row in reverse order in a list.
--
--
Regards,
KC
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Ross Paterson r...@soi.city.ac.uk wrote:
Though one possibility that might get us most of the way there would
be to refactor the Arrow class as
class PreArrow a where
premap :: (b - b') - a b' c - a b c
Note that you are reinventing the 'profunctors' package here. Every
arrow forms a
On Sun, Jul 15, 2012 at 06:51:07PM +0100, Tsuyoshi Ito wrote:
Thank you for the response. This sounds exciting, but sadly, I must
admit that it is a little (?) above my head, and I cannot relate this
extension to my original question….
Sorry about that -- I got a bit side-tracked. The
On 12-07-10 11:35 PM, Brandon Allbery wrote:
Quoth the Fine Manual (8.2.1.1. Using your own main()
http://www.haskell.org/ghc/docs/latest/html/users_guide/ffi-ghc.html#using-own-main):
There can be multiple calls to |hs_init()|, but each one should be
matched by one (and only one) call to
Silly me -- that code works with the current GHC (module attached).
I still think the generalization is worth doing, though.
-
{-# LANGUAGE Arrows #-}
module ArrowTest where
import Control.Applicative
import Control.Arrow
On Sun, Jul 15, 2012 at 6:30 PM, Ross Paterson r...@soi.city.ac.uk wrote:
Silly me -- that code works with the current GHC (module attached).
Aha! Now I see why the GHC documentation states “the arrows involved
need not be the same” in the section about banana brackets. After
all, I was wrong
Em 15/07/2012 18:38, Albert Y. C. Lai tre...@vex.net escreveu:
On 12-07-10 11:35 PM, Brandon Allbery wrote:
Quoth the Fine Manual (8.2.1.1. Using your own main()
http://www.haskell.org/ghc/docs/latest/html/users_guide/ffi-ghc.html#using-own-main
):
There can be multiple calls to
On 12-07-15 08:37 PM, Felipe Almeida Lessa wrote:
Would that be:
Prog ::= nop | hs_init(); Prog'; hs_exit();
Prog' ::= nop | hs_init(); Prog'; hs_exit(); | Prog' Prog'
Yeah, I keep forgetting that.
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