Hi all,
I've been writing a DSL to describe securities orders, and after a lot
of help from the kind folk of this list and #haskell have come up with
the following implementation, using generalised algebraic data types:
https://gist.github.com/1124621
Elsewhere in my application, I make use of t
Hi
Is there a good reason that the default for library-profiling in
.cabal/config is set to False? It seems a lot of people hit the problem of
trying to profile for the first time, finding it doesn't work because
profiling libraries haven't been installed, then they have to walk the
dependencies re
Hi Tim,
On Thu, Aug 4, 2011 at 08:57, Tim Cowlishaw wrote:
> Hi all,
>
> I've been writing a DSL to describe securities orders, and after a lot
> of help from the kind folk of this list and #haskell have come up with
> the following implementation, using generalised algebraic data types:
>
> htt
On 4 August 2011 17:06, Tom Doris wrote:
> Hi
> Is there a good reason that the default for library-profiling in
> .cabal/config is set to False? It seems a lot of people hit the problem of
> trying to profile for the first time, finding it doesn't work because
> profiling libraries haven't been i
2011/8/4 José Pedro Magalhães :
> Here you seem to be using newtype deriving in particular, which behaves
> differently from standard deriving. Compiling with -ddump-deriv will show
> you the instances GHC is generating, which can help in debugging.
Aah - this is very useful, thanks!
> Note howe
Hi Folks,
There is a place available at CamHac next Friday-Sunday (12-14 August).
First come first served! For instructions on how to register, see the
wiki page:
http://www.haskell.org/haskellwiki/CamHac#Registration
Also a reminder, if you have already registered but won't be able to
ma
On Tue, Aug 02, 2011 at 05:08:33PM -0400, bob zhang wrote:
> hi, all
> testB :: (ArrowChoice t1, Num a1, Num a) => (a -> a1 -> t2) -> t1 a t3
> -> t1 a1 t3 -> t1 (a, a1) t
> testB f g h = proc (x,y) -> do
> if (f x y)then g -< x + 1 else h -< y + 2
>
> it's very strange that the type of _f_ is (a-
here is a reduced program that still segfaults:
{-# LANGUAGE Arrows #-}
import Control.Arrow
main :: IO ()
main = print segfault
segfault :: [()]
segfault = anythingYouWant ()
anythingYouWant :: a
anythingYouWant = testB False (const ()) ()
testB :: ArrowChoice arrow
=> bool -> arrow ()
I created a ticket with a slightly further simplified program:
http://hackage.haskell.org/trac/ghc/ticket/5380
On Fri, Aug 5, 2011 at 10:10 AM, Sebastian Fischer wrote:
> here is a reduced program that still segfaults:
>
> {-# LANGUAGE Arrows #-}
>
> import Control.Arrow
>
> main :: IO ()
> main
