Hi Ryan.
Thanks a lot, that was exactly the information I needed.
Concerning the type classes, there are methods, but I dropped them,
because they were not necessary for the problem. However, you are right.
Implementation hiding is what I need.
One suggestion. Maybe a HaskellWiki page on design
Excerpts from Magicloud Magiclouds's message of Mon Oct 13 23:58:58 -0500 2008:
> Hi,
> I wanted to install it with cabal. Well
> $ cabal install derive
> Resolving dependencies...
> cabal: Couldn't read cabal file "./derive/0.1.2/derive.cabal"
> As I traced a little, it seemed that line: '
On Tue, 2008-10-14 at 13:51 +0800, Magicloud wrote:
> Sigh again, something that always makes me think that cabal is unusable
> ~/.cabal/lib/HTTP-3001.1.3/ghc-6.8.3/libHSHTTP-3001.1.3.a(Browser.o)(.text+0x5aa6):
> In function `rp46_info':
> : undefined reference to
> `mtlzm1zi1zi0zi1_Control
$ cabal --version
cabal-install version 0.5.2
using version 1.4.0.2 of the Cabal library
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 6.8.3
Don Stewart wrote:
magicloud.magiclouds:
Hi,
I wanted to install this package. Well,
Building hprotoc-0.3.1...
...
[3 of
magicloud.magiclouds:
> Hi,
>I wanted to install this package. Well,
> Building hprotoc-0.3.1...
> ...
> [3 of 7] Compiling Text.ProtocolBuffers.ProtoCompile.Parser ...
>
> Text/ProtocolBuffers/ProtoCompile/Parser.hs:48:0:
>Type synonym `GenParser' should have 2 arguments, but has been giv
Sigh again, something that always makes me think that cabal is unusable
$ cabal install cabal-install
Resolving dependencies...
'cabal-install-0.6.0' is cached.
Configuring cabal-install-0.6.0...
Preprocessing executables for cabal-install-0.6.0...
Building cabal-install-0.6.0...
[ 1 of 29] C
On Mon, 13 Oct 2008 23:32:30 -0400, Tommy M. McGuire <[EMAIL PROTECTED]> wrote:
> Andrew Coppin wrote:
>> Bulat Ziganshin wrote:
>>> people that make critique on haskell type classes, don't take into
>>> account that it's unlike C++ templates, implemented via run-time
>>> dictionaries and other mo
On Tue, 2008-10-14 at 12:58 +0800, Magicloud wrote:
> Hi,
> I wanted to install it with cabal. Well
> $ cabal install derive
> Resolving dependencies...
> cabal: Couldn't read cabal file "./derive/0.1.2/derive.cabal"
> As I traced a little, it seemed that line: 'build-depends: base ==
> 4.
On Mon, 2008-10-13 at 22:08 -0700, Don Stewart wrote:
> Using GHC 6.10 RC from today, Cabal 1.6 and cabal-install 1.16, of 682
> libraries and apps tried in total,
Note that's cabal-install-0.6 :-)
> 1 UnpackFailed
I've diagnosed this one. It will be fixed in the next cabal-install
point
Hey all.
The GHC 6.10 RCs are out, and we're preparing the release of GHC proper.
To help manage the transistion to GHC 6.10 it is now possible to
actually build all the 3rd party Haskell packages, and publish their
results wrt. the release candidate.
For the first time ever, we're able to have a
Hi,
I wanted to install this package. Well,
Building hprotoc-0.3.1...
...
[3 of 7] Compiling Text.ProtocolBuffers.ProtoCompile.Parser ...
Text/ProtocolBuffers/ProtoCompile/Parser.hs:48:0:
Type synonym `GenParser' should have 2 arguments, but has been given 1
In the type synonym declarati
Hi,
I wanted to install it with cabal. Well
$ cabal install derive
Resolving dependencies...
cabal: Couldn't read cabal file "./derive/0.1.2/derive.cabal"
As I traced a little, it seemed that line: 'build-depends: base ==
4.*, syb' was wrong.
___
On Mon, Oct 13, 2008 at 8:32 PM, Tommy M. McGuire <[EMAIL PROTECTED]> wrote:
>
> Java (and presumably C#) "generics" are very much like a weakened version
> of normal parametric polymorphism.
I'm curious, in what way are they weakened?
thanks,
Jason
_
Andrew Coppin wrote:
Bulat Ziganshin wrote:
people that make critique on haskell type classes, don't take into
account that it's unlike C++ templates, implemented via run-time
dictionaries and other modules may define new instances
Personally, I have no clue how C++ templates work [yet]. (As i
> Pray tell, what kind of feats are expected of such a champion?
No answer. I guess my failed attempt at chivalrous-sounding wit killed the
message. I'll rephrase:
Does the job consist of:
Maintaining an independent repository of Haskell packages configured and
compiled for the current (probabl
Oh, that's so cool.
But, this feather is too difficult to be configured in UE32 -- my costom IDE.
Pity. Hopes I wouldn't forget it later.
--
L.Guo
2008-10-14
-
From: Matt Morrow
At: 2008-1
On Mon, Oct 13, 2008 at 1:29 AM, Ryan Ingram <[EMAIL PROTECTED]> wrote:
> Of course, the point of this message isn't just to complain. The
> overlap implementation was abhorrent and it *is* better now than it
> was before. But perhaps there is an abstraction we are missing that
> would allow for
Hello,
On Mon, Oct 13, 2008 at 3:16 PM, Stephen Hicks <[EMAIL PROTECTED]> wrote:
> 2008/10/13 Daryoush Mehrtash <[EMAIL PROTECTED]>:
>> Is there a write up on what makes an implementation lazy vs strict?
>
> I would be interested in seeing this, too!
Typically it has to do with the strictness of
On Sun, 12 Oct 2008 03:45:17 +0200, Don Stewart <[EMAIL PROTECTED]> wrote:
I just want to congratulate the wxHaskell team on their new release.
With GHC 6.10 RC, cabal 1.6, and cabal-install 0.6, I was able to
simply,
cabal install wxcore wx
And it all worked.
Well done!
-- Don
I wish
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Bulat Ziganshin wrote:
> Hello Andrew,
>
> Tuesday, October 14, 2008, 12:15:04 AM, you wrote:
>
>>> people that make critique on haskell type classes, don't take into
>>> account that it's unlike C++ templates, implemented via run-time
>>> dictionaries
On Mon, Oct 13, 2008 at 1:31 PM, Bulat Ziganshin
<[EMAIL PROTECTED]>wrote:
> Hello Andrew,
>
> Tuesday, October 14, 2008, 12:15:04 AM, you wrote:
>
> >> people that make critique on haskell type classes, don't take into
> >> account that it's unlike C++ templates, implemented via run-time
> >> dic
2008/10/13 Daryoush Mehrtash <[EMAIL PROTECTED]>:
> Is there a write up on what makes an implementation lazy vs strict?
I would be interested in seeing this, too!
> I like to better understand the trade off between the two and use cases
> where one is better than the other.
>
> I noticed that so
Hello,
The currently released version of monadLib does not use overlapping
instances, indeed.
However, in the monadLib repo (http://github.com/yav/monadlib) there
is a file called "MonadLib4.hs" which contains a version of the
library that is implemented with overlapping instances, so you can
play
(First of all, sorry for the double reply...)
2008/10/13 Arun Suresh <[EMAIL PROTECTED]>:
> Now my client want to write another subclass for Drawable...
> He can do that in any other file... package.. whatever...
>
> How would he do that in Haskell ???
> considering he may not modify the source fi
On Mon, Oct 13, 2008 at 3:29 AM, Ryan Ingram <[EMAIL PROTECTED]> wrote:
> On Mon, Oct 13, 2008 at 2:04 AM, J. Garrett Morris
> <[EMAIL PROTECTED]> wrote:
>> Indeed - MTL seems to have been rewritten at some point in the past to
>> prefer exhaustive enumeration to overlap.
>
> Indeed, and I actually
If you want to make Haskell more widely used, do pick a name for
Haskell Prime that starts with an A. I first heard of Haskell when
exploring the list of computer languages that Gedit could highlight.
Just imagine going through all those A,B,C,D,E,F,G before I came to
Haskell.
Those programmers wh
If you want to make Haskell more widely used, do pick a name for
Haskell Prime that starts with an A. I first heard of Haskell when
exploring the list of computer languages that Gedit could highlight.
Just imagine going through all those A,B,C,D,E,F,G before I came to
Haskell.
That is a simple s
Is there a write up on what makes an implementation lazy vs strict?
I like to better understand the trade off between the two and use cases
where one is better than the other.
I noticed that some functions in the lazy implementation uses "~" .For
example
evalStateT :: (Monad m) => StateT s
The new QuasiQuotes extension arriving with ghc 6.10 is very exciting,
and handling multi-line string literals is like stealing candy from
a baby. ;)
> (...)
Cool!!!
How exactly QuasiQuote behave, and what
is available to handle them? (Or: can I
find information already on the web?)
Sugestion:
On Mon, 2008-10-13 at 13:37 -0700, Daryoush Mehrtash wrote:
> Question 1: Why are there lazy and strict modules of some monads?
> (e.g. Control.Monad.State)
Because both are useful, for different purposes. (For the same reason
that it's helpful, in general, to have both eager and lazy evaluation
Bulat Ziganshin wrote:
Hello Andrew,
Tuesday, October 14, 2008, 12:15:04 AM, you wrote:
people that make critique on haskell type classes, don't take into
account that it's unlike C++ templates, implemented via run-time
dictionaries and other modules may define new instances
Question 1: Why are there lazy and strict modules of some monads? (e.g.
Control.monad.State)
Question 2: If I define a new monad (say xyz), does it have to be as
control.monad.xyz module?
daryoush
___
Haskell-Cafe mailing list
Haskell-Cafe@haskell.or
Hello Andrew,
Tuesday, October 14, 2008, 12:15:04 AM, you wrote:
>> people that make critique on haskell type classes, don't take into
>> account that it's unlike C++ templates, implemented via run-time
>> dictionaries and other modules may define new instances
>>
> Personally, I have no clue
Hans van Thiel wrote:
> Secondly, has Gtk2Hs compatibility been tested with GHC 6.10? In the
> past there have sometimes been problems with new GHC releases and
> Gtk2Hs. These have always been addressed, but it usually took a few
> months..
I just built Gtk2Hs with the 6.10-rc on Windows, and it
Jonathan Cast wrote:
Flexible instances are extroardinarily useful:
I'm sure the GHC team wouldn't have bothered otherwise. ;-)
AFAIK, "flexible instances" just means that absolutely anything can be a
class instance, right?
instance Monad m => MonadState s (StateT s m)
instance MonadSta
Dino Morelli wrote:
> I was wishing I could do this:
>
>let foo = str `or-if-empty` default
>
>
> If it was a Maybe, this works with mplus:
>
>(Just "foo") `mplus` (Just "bar") == Just "foo"
>Nothing `mplus` (Just "bar") == Just "bar"
>
>
> But not so much for list, mplus just ain'
Bulat Ziganshin wrote:
people that make critique on haskell type classes, don't take into
account that it's unlike C++ templates, implemented via run-time
dictionaries and other modules may define new instances
Personally, I have no clue how C++ templates work [yet]. (As in, I'm
learning C+
On Mon, 2008-10-13 at 19:51 +0100, Andrew Coppin wrote:
> {-# LANGUAGE FlexibleInstances #-}
>
> module Overload where
>
> class Silly s where
> go :: s
>
> instance Silly ([x] -> [x]) where
> go = reverse
>
> instance Silly (Int -> Int) where
> go = (+1)
>
>
>
>
>
> Don't even ask.
Hallo,
Andrew Coppin wrote:
>>
>> In what alternate universe?
>>
>
> One with a 3-day time dilation, apparently...
>
>
>
> [Sorry, couldn't resist. ;-) ]
>
No problem, I didn't get your point anyway.
-alex
http://www.ventonegro.org/
_
Thanks a lot Ian!
I was with abstracted eyes after day of work
Luckily after your hint I've finished my haskell MEX file experiment
in few minutes!
Thanks!
On Mon, Oct 13, 2008 at 9:47 PM, Ian Lynagh <[EMAIL PROTECTED]> wrote:
>
> Hi Yakov,
>
> On Mon, Oct 13, 2008 at 07:47:15PM +0400, Yakov ZAYTS
Sorry,
as Chris Eidhof replied to me CAL is not pure. I was only playing with
GemCutter, I don't use CAL so I didn't know.
Fero
On Sun, Oct 12, 2008 at 5:32 PM, frantisek kocun
<[EMAIL PROTECTED]>wrote:
> There is CAL language (purely functional, very Haskell like, the most I
> have seen). CAL E
Hello Andrew,
Monday, October 13, 2008, 10:51:43 PM, you wrote:
> Suffice it to say, you *can* make Haskell support arbitrary overloading
> of function names like C++ has, _if_ you abuse the type system violently
> enough. Please, won't somebody think of the children?!?
people that make critique
Hello Ian,
Monday, October 13, 2008, 9:47:12 PM, you wrote:
> http://www.haskell.org/ghc/docs/6.8.3/html/users_guide/win32-dlls.html
this page says "Since this Haskell DLL depends on a couple of the DLLs
that come with GHC, make sure that they are in scope/visible."
i just checked 6.8.3 install
{-# LANGUAGE FlexibleInstances #-}
module Overload where
class Silly s where
go :: s
instance Silly ([x] -> [x]) where
go = reverse
instance Silly (Int -> Int) where
go = (+1)
Don't even ask.
Suffice it to say, you *can* make Haskell support arbitrary overloading
of function names li
Matt Morrow wrote:
The new QuasiQuotes extension arriving with ghc 6.10 is very exciting,
and handling multi-line string literals is like stealing candy from
a baby. ;)
Cool. Is there any progress on getting GHC to *not* freak out when you
ask it to compile a CAF containing several hundred
On Mon, Oct 13, 2008 at 1:35 PM, Albert Y. C. Lai <[EMAIL PROTECTED]> wrote:
> Alex Queiroz wrote:
>>
>> On Fri, Oct 10, 2008 at 5:48 PM, Andrew Coppin
>>>
>>> In what way? As far as I'm aware, .NET never really caught on and has
>>> long
>>> since become obsolete.
>>
>> In what alternate unive
Alex Queiroz wrote:
Hallo,
On Fri, Oct 10, 2008 at 5:48 PM, Andrew Coppin
<[EMAIL PROTECTED]> wrote:
In what way? As far as I'm aware, .NET never really caught on and has long
since become obsolete. Or do you just mean the type system machinery that
has been developed could be used for othe
Alex Queiroz wrote:
On Fri, Oct 10, 2008 at 5:48 PM, Andrew Coppin
In what way? As far as I'm aware, .NET never really caught on and has long
since become obsolete.
In what alternate universe?
Anthropic Principle: Everyone is in a different bubble of observable
reality.
__
On Mon, 2008-10-13 at 16:15 +0200, Hans van Thiel wrote:
> What's the status of Gtk2Hs with regard to Cabal? Is it correct that not
> one of the applications on Hackage, and there are some, uses or can use
> a GUI at this point in time?
Gtk2Hs still does not use Cabal as its build system. With th
On Mon, 2008-10-13 at 10:54 -0700, Don Stewart wrote:
> marlowsd:
> > Don Stewart wrote:
> >
> > >Note that these builds are with "soft deps", provided on hackage,
> > >
> > >base < 4
> > >parsec < 3
> > >HaXml == 1.13.*
> > >QuickCheck < 2
> > >
> > >which train cabal-install to b
Hi Andrew,
On Mon, Oct 13, 2008 at 19:58, Andrew Coppin
<[EMAIL PROTECTED]> wrote:
> Right. OK. So... isn't there a class somewhere called MonadChoice or
> similar, which defines (<|>)?
Just to pitch in a helpful tip, Hoogle is excellent for these kind of
questions (which come up very often):
ht
On Mon, 13 Oct 2008, Andrew Coppin wrote:
Reid Barton wrote:
It's not difficult: the operation is called
mplus :: MyMonad a -> MyMonad a -> MyMonad a
and already exists (assuming the author of ListT has not forgotten to
write a MonadPlus instance).
I see... I was under the impression that
The new QuasiQuotes extension arriving with ghc 6.10 is very exciting,
and handling multi-line string literals is like stealing candy from
a baby. ;)
-
-- Here.hs
module Here (here) where
import Language.Haskell.TH.Quote
On Mon, 2008-10-13 at 18:58 +0100, Andrew Coppin wrote:
> Jonathan Cast wrote:
> >> I see... I was under the impression that "mplus" is just any arbitrary
> >> binary operation over a given monad. How do you know what it does for a
> >> specific monad?
> >>
> >
> > Process of elimination. S
Jonathan Cast wrote:
I see... I was under the impression that "mplus" is just any arbitrary
binary operation over a given monad. How do you know what it does for a
specific monad?
Process of elimination. Sometimes, this doesn't narrow things down to a
single operation, but it gives you a
marlowsd:
> Don Stewart wrote:
>
> >Note that these builds are with "soft deps", provided on hackage,
> >
> >base < 4
> >parsec < 3
> >HaXml == 1.13.*
> >QuickCheck < 2
> >
> >which train cabal-install to build a larger set of packages.
>
> Will this happen automatically somehow,
Reid Barton wrote:
It's not difficult: the operation is called
mplus :: MyMonad a -> MyMonad a -> MyMonad a
and already exists (assuming the author of ListT has not forgotten to
write a MonadPlus instance).
I see... I was under the impression that "mplus" is just any arbitrary
binary oper
Hi Yakov,
On Mon, Oct 13, 2008 at 07:47:15PM +0400, Yakov ZAYTSEV wrote:
>
> Sadly, I've found --mk-dll option unrecognized by latest stable GHC 6.8.3..
> I'm new to win32 development
> How one can make win32 dll at the moment?
> I've successfully compiled Adder sources from example from section
On Mon, 2008-10-13 at 18:38 +0100, Andrew Coppin wrote:
> Ryan Ingram wrote:
> > I would go further than that. To Andrew's question, I say:
> >
> > Yes, we want to encourage "these people" to learn Haskell. We want to
> > smash all their expectations into tiny little pieces. We want their
> > br
On Mon, 2008-10-13 at 18:28 +0100, Andrew Coppin wrote:
> Reid Barton wrote:
> > It's not difficult: the operation is called
> >
> > mplus :: MyMonad a -> MyMonad a -> MyMonad a
> >
> > and already exists (assuming the author of ListT has not forgotten to
> > write a MonadPlus instance).
> >
>
Ryan Ingram wrote:
I would go further than that. To Andrew's question, I say:
Yes, we want to encourage "these people" to learn Haskell. We want to
smash all their expectations into tiny little pieces. We want their
brains to explode. And after that, we want to take what is left, pick
it up
Arun Suresh wrote:
Hello folks,
Im kinda new to haskell. Ive only been fiddling around with it for
bout 3 - 4 weeks now.
And for the life of me... i cant seem to figure out why this doesnt work :
class Foo a where
fooFunc :: a -> Int
data FooData = FData
instance Foo FooData where
On Mon, Oct 13, 2008 at 6:02 PM, Mauricio <[EMAIL PROTECTED]> wrote:
> On Fri, Oct 10, 2008 at 10:49 PM, Andrew Coppin <[EMAIL PROTECTED]> wrote:
>> _Some_ newcommers flounder because they expect Haskell to be just another
>> VB / C++ / Java / whatever. (Do we really want to encourage these people
First, a comment. I don't understand why you have so many classes!
What proof invariants are they helping you enforce? Do you really a
constraint that says that something is a "Rule"? Are you going to
write functions that are polymorphic over CRule? How can you do so
when CRule has no methods?
_Some_ newcommers flounder because they expect Haskell to be just
another VB / C++ / Java / whatever. (Do we really want to encourage
these people to be learning Haskell in the first place?) (...)
I hope so. One of my most important motivations to try
Haskell was that I thought it was radically
Hello,
Sadly, I've found --mk-dll option unrecognized by latest stable GHC 6.8.3..
I'm new to win32 development
How one can make win32 dll at the moment?
I've successfully compiled Adder sources from example from section
11.5.4 of user guide
I need to build dll to be called from foreign applicatio
> {-# OPTIONS_GHC -fglasgow-exts #-}
> module Test where
>import qualified Data.Set as S
Hi. I try to model the following: Hypotheses are build up from Rules,
which itself are made of the type Rule. Because I may change the
implementation later, I want to use type classes, which define the
signa
> > *HTML> toString $ tag "b" [] [tag "i" [] [text "<>"], text "test"]
> > "<>test"
>
> I'd say the big problem is that your embedded language for describing
> HTML is way more complex for a domain expert than
>
> doc = renderHTML $(q "#{v1}#{v2}")
>where
>v1 = "<>"
>v2 =
On Sun, 2008-10-12 at 14:46 -0700, Don Stewart wrote:
> Hey all.
>
> The GHC 6.10 RCs are out, and we're preparing the release. To help manage the
> transistion to GHC 6.10 it is now possible to actually build all the 3rd party
> Haskell packages, and publish their results wrt. the release cand
Normally I agree with you, apfelmus, but here at least I have to differ!
On Mon, Oct 13, 2008 at 11:50 AM, apfelmus <[EMAIL PROTECTED]> wrote:
> *HTML> toString $ tag "b" [] [tag "i" [] [text "<>"], text "test"]
> "<>test"
I'd say the big problem is that your embedded language for describing
HT
> As part of a project to formalize the theory of overlapping instances,
> I'm looking for examples of overlapping and incoherent instances and
> their usage.
EMGM [1] uses overlapping instances to make it more convenient to use
extensible, generic functions on arbitrary datatypes. They're not ab
Hallo,
On Fri, Oct 10, 2008 at 5:48 PM, Andrew Coppin
<[EMAIL PROTECTED]> wrote:
> Don Stewart wrote:
>>
>> This could be a game changer.
>>
>
> In what way? As far as I'm aware, .NET never really caught on and has long
> since become obsolete. Or do you just mean the type system machinery that
>
Ivan:
> In this case, it isn't SourceGraph's fault: Haskell-Src-Exts can't parse it.
> Maybe it doesn't parse CPP stuff properly? I'm not sure how I can get
> SourceGraph to parse files only after they've been pre-processed...
haskell-src-exts doesn't include a CPP processor no, but will discar
Hello Arun,
Monday, October 13, 2008, 2:50:27 PM, you wrote:
> I agree that this does look more succinct... but what if I write some generic
> code for the
> in the render method of the Drawable class and package it into a library..
i recommend you to read http://haskell.org/haskellwiki/OOP_vs_
Devin Mullins wrote:
> apfelmus wrote:
>> Yes. "Just" an injection problem is an understatement. And its the
>> implementation of the abstract data type that determines how fast things
>> are. Who said that it may not simply be a newtyped String ?
>
> I think the attraction to the SafeString examp
On Mon, Oct 13, 2008 at 4:08 PM, Ryan Ingram <[EMAIL PROTECTED]> wrote:
> On Mon, Oct 13, 2008 at 11:18 AM, Arun Suresh <[EMAIL PROTECTED]>
> wrote:
> ] you seem to have read my mind [:)].. i actaually hit upon this issue
> while
> ] trying to "transcode" some C++ to Haskell..
>
> (literate haskel
Step 1: Forget everything you know about OO classes, then try again :)
2008/10/13 Arun Suresh <[EMAIL PROTECTED]>:
> class Foo a where
> fooFunc :: a -> Int
>
> data FooData = FData
>
> instance Foo FooData where
> fooFunc _ = 10
So far so good.
> class Bar a where
> barFunc :: (Foo
On Mon, Oct 13, 2008 at 11:18 AM, Arun Suresh <[EMAIL PROTECTED]> wrote:
] you seem to have read my mind [:)].. i actaually hit upon this issue while
] trying to "transcode" some C++ to Haskell..
(literate haskell post, save it into "draw.lhs" and you can load it in ghci!)
What you usually want w
Ivan Lazar Miljenovic <[EMAIL PROTECTED]> wrote:
> In this case, it isn't SourceGraph's fault: Haskell-Src-Exts can't
> parse it. Maybe it doesn't parse CPP stuff properly? I'm not sure how
> I can get SourceGraph to parse files only after they've been
> pre-processed...
You could try using the
Hello Ryan..
On Mon, Oct 13, 2008 at 3:33 PM, Ryan Ingram <[EMAIL PROTECTED]> wrote:
> Step 1: Forget everything you know about OO classes, then try again :)
you seem to have read my mind [:)].. i actaually hit upon this issue while
trying to "transcode" some C++ to Haskell..
>
>
> 2008/10/13
On 13 Οκτ 2008, at 9:41 ΠΜ, Martin Hofmann wrote:
Hi Christos,
We and a colleague from Japan use Haskell for Inductive Functional
Programming, i.e. learn programs from examples.
However, we just have started to port our program to Haskell:
http://www.cogsys.wiai.uni-bamberg.de/effalip/
Susum
Hello folks,
Im kinda new to haskell. Ive only been fiddling around with it for bout 3 -
4 weeks now.
And for the life of me... i cant seem to figure out why this doesnt work :
class Foo a where
fooFunc :: a -> Int
data FooData = FData
instance Foo FooData where
fooFunc _ = 10
class
Don Stewart wrote:
Note that these builds are with "soft deps", provided on hackage,
base < 4
parsec < 3
HaXml == 1.13.*
QuickCheck < 2
which train cabal-install to build a larger set of packages.
Will this happen automatically somehow, or will users have to do this manually?
Hi all,
there were several discussions on this list about different
implementations of Haskell running on the iPhone and other mobile
platforms over the last three months or so. I would very much like to
see the current state of what is and is not yet possible here reflected
in the "Platforms" se
On Mon, Oct 13, 2008 at 12:29 AM, Ryan Ingram <[EMAIL PROTECTED]> wrote:
> Of course, the point of this message isn't just to complain. The
> overlap implementation was abhorrent and it *is* better now than it
> was before.
I'm curious what you find abhorrent about the overlap implementation
that
ryani.spam:
> On Mon, Oct 13, 2008 at 2:04 AM, J. Garrett Morris
> <[EMAIL PROTECTED]> wrote:
> > Indeed - MTL seems to have been rewritten at some point in the past to
> > prefer exhaustive enumeration to overlap.
>
> Indeed, and I actually think this is a weakness of the current
> implementation
On Mon, Oct 13, 2008 at 08:43:48AM +0200, apfelmus wrote:
> Yes. "Just" an injection problem is an understatement. And its the
> implementation of the abstract data type that determines how fast things
> are. Who said that it may not simply be a newtyped String ?
I think the attraction to the Safe
On Mon, Oct 13, 2008 at 2:04 AM, J. Garrett Morris
<[EMAIL PROTECTED]> wrote:
> Indeed - MTL seems to have been rewritten at some point in the past to
> prefer exhaustive enumeration to overlap.
Indeed, and I actually think this is a weakness of the current
implementation. Anyone who comes up wit
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On Sun, 12 Oct 2008 20:01:32 -0400
Gwern Branwen <[EMAIL PROTECTED]> wrote:>
> 'K. So SourceGraph doesn't do any error reporting? I'll keep that in mind.
In this case, it isn't SourceGraph's fault: Haskell-Src-Exts can't parse it.
Maybe it doesn't pa
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