Rafael Cunha de Almeida writes:
> My main function goes like this:
> (...)
> rotX <- newIORef (0.0::GLfloat)
> rotY <- newIORef (0.0::GLfloat)
> pos <- newIORef (0.0::GLfloat, 0.0, 0.0)
>
> displayCallback $= display (map f range) rotX rotY pos
>
> keyboardMouseCallback $=
Notice that rotX, rotY and pos are meant to be used as comunication
between the keyboardMouse and display functions. They need to be set as
0 first, so display won't do anything. Only when they user press a few
buttons that those values change, so display behaves accordanly.
In a state-based lang
but the rest of it looks like a fat lady bending over.
2009/3/21 Henning Thielemann
>
> On Fri, 20 Mar 2009, Jon Fairbairn wrote:
>
> ::Haskell
>>
>
> See the lamp in logo 33 at
> http://www.haskell.org/logos/poll.html
>
> ___
> Haskell-Cafe mailing
On Sun, 2009-03-22 at 01:03 +0100, Manlio Perillo wrote:
> Duncan Coutts ha scritto:
> > On Sat, 2009-03-21 at 23:05 +0100, Manlio Perillo wrote:
> >
> >> P.S: I tried to send an email to cabal-devel some days ago, with a
> >> feature I would like to see in Cabal.
> >> But the mail was never post
Hello,
I am writing a OpenGL program in haskell, it can be found in:
http://github.com/aflag/galo/tree/master
But I hope this e-mail will be self-contained :).
My main function goes like this:
(...)
rotX <- newIORef (0.0::GLfloat)
rotY <- newIORef (0.0::GLfloat)
pos <- new
Duncan Coutts ha scritto:
On Sat, 2009-03-21 at 23:05 +0100, Manlio Perillo wrote:
P.S: I tried to send an email to cabal-devel some days ago, with a
feature I would like to see in Cabal.
But the mail was never posted to the mailing list.
Is that list moderated?
It's subscriber only, like al
On Sat, 2009-03-21 at 23:05 +0100, Manlio Perillo wrote:
> P.S: I tried to send an email to cabal-devel some days ago, with a
> feature I would like to see in Cabal.
> But the mail was never posted to the mailing list.
> Is that list moderated?
It's subscriber only, like all the haskell.org mail
I'm planning on applying for the Google Summer of Code and the more I
think about it, the more excited I am over a Haskell reddit-alike[1].
I'm interested in web programming, Haskell, and reddit (being an
addict for some years now). There's plenty of work to be done on such
a project, there are ex
As a new Haskell user, I have to heartily agree about the sign-posts.
Cabal is a superb, easy-to-use command-line tool for Haskell package
management, but browsing various "getting started with Haskell" pages
didn't lead me to clear instructions that cabal exists and that it is
really impo
Duncan Coutts ha scritto:
On Sat, 2009-03-21 at 14:26 +0100, Manlio Perillo wrote:
Hi.
Assuming this configuration fragment:
library xxx
cc-options: -Wall
if flag(HAVE_URANDOM)
cc-options:-DHAVE_URANDOM
In case the HAVE_URANDOM flag is defined, what will be the
On Fri, 20 Mar 2009, Jon Fairbairn wrote:
::Haskell
See the lamp in logo 33 at
http://www.haskell.org/logos/poll.html
___
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
Hi all,
I should have done this ages ago but there's now a Cabal FAQ on the
Cabal website:
http://haskell.org/cabal/FAQ.html
It's not linked in yet, I'm looking for feedback and patches. The Cabal
website is now maintained in darcs so it's easy to send in
contributions:
darcs get http://haskell
On Fri, 20 Mar 2009, Nicolas Pouillard wrote:
Hi folks,
We have good news (nevertheless we hope) for all the lazy guys standing there.
Since their birth, lazy IOs have been a great way to modularly leverage all the
good things we have with *pure*, *lazy*, *Haskell* functions to the real world
On Sat, 2009-03-21 at 14:26 +0100, Manlio Perillo wrote:
> Hi.
>
> Assuming this configuration fragment:
>
> library xxx
> cc-options: -Wall
>
> if flag(HAVE_URANDOM)
> cc-options:-DHAVE_URANDOM
>
> In case the HAVE_URANDOM flag is defined, what will be the value
I've had issues with ghci and opengl... I usually have to compile my
programs before they will run. I'm not sure why that's the case, but
I too get strange window behavior (sometimes it freezes, other times
it doesn't even show up).
If you're on a Mac and would like help compiling to a .ap
Achim Schneider writes:
> :: might be truly Haskell in the sense that everybody else uses
> plain :, but I don't want Haskell to be associated with squareness, and
> typing, by itself, is hardly a distinguishing property of Haskell.
I guess laziness is the most distinguishing property, and there
Ross Mellgren wrote:
> >>
>
Way too many, definitely.
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Should be from pkg-config path, make sure your PKG_CONFIG_PATH is set
to include /Library/Frameworks/{GLib,Gtk,Cairo}.framework
Also, I had a problem where it couldn't find libpng -- I had to add /
usr/X11/lib/pkgconfig to my pkg-config path.
-Ross
On Mar 21, 2009, at 5:02 PM, Colin Adams w
And the reason is that librsvg fails to find cairo, pangocairo and cairo-png.
Where is it supposed to find them?
2009/3/21 Colin Adams :
> It didn't.
>
> 2009/3/21 Ross Mellgren :
>> Did the configure for gtk2hs claim that it was going to build svgcairo? If
>> something is wrong with the librsvg
It didn't.
2009/3/21 Ross Mellgren :
> Did the configure for gtk2hs claim that it was going to build svgcairo? If
> something is wrong with the librsvg install, it won't.
>
> -Ross
>
> On Mar 21, 2009, at 4:49 PM, Colin Adams wrote:
>
>> OK - I added the --with-user-pkginfo flag.
>> It nearly all
Did the configure for gtk2hs claim that it was going to build
svgcairo? If something is wrong with the librsvg install, it won't.
-Ross
On Mar 21, 2009, at 4:49 PM, Colin Adams wrote:
OK - I added the --with-user-pkginfo flag.
It nearly all works now - but still no svgcairo - ./configure
d
OK - I added the --with-user-pkginfo flag.
It nearly all works now - but still no svgcairo - ./configure doesn't find it.
2009/3/21 Ross Mellgren :
> (back to the list)
>
> Answers inline:
>
> On Mar 21, 2009, at 2:42 PM, Colin Adams wrote:
>
>> Yes, that was the problem, and swapping the PATH ord
Actually I was also going to provide exactly the same example, but
hesitated to :)
2009/3/21 Antti-Juhani Kaijanaho :
> On Sat, Mar 21, 2009 at 07:29:05PM +, Algebras Math wrote:
>> If above is true, I am confused why we have to distinguish the terms which
>> have NF and be in NF? isn't the te
-- Haddock 2.4.2
A new version of Haddock, the Haskell documentation tool, is out.
This is a bug fix release only, and it's the same version that will ship with
GHC 6.10.2, unless any important problems are
On Sat, Mar 21, 2009 at 07:29:05PM +, Algebras Math wrote:
> If above is true, I am confused why we have to distinguish the terms which
> have NF and be in NF? isn't the terms have NF will eventually become in NF?
> or there are some way to avoid them becoming in NF?
Spoken like a mathematicia
Thus, if you use normal-order evaluation (which Haskell uses), you
will inevitably reach the normal form if and only if it exists at all.
So, if all you care about is the normal form (if you don't care about
computation time), then terms that *have* an NF and terms that *are*
in NF are indistinguis
(back to the list)
Answers inline:
On Mar 21, 2009, at 2:42 PM, Colin Adams wrote:
Yes, that was the problem, and swapping the PATH order does the trick.
Thanks.
no prob.
I must still have the macports stuff installed. Can you tell me how to
get rid of it?
if you really want to get rid o
Given the Y combinator, Y (\x.x) has no normal form.
However, (\a. (\x. x)) (Y (\x. x)) does have a normal form; (\x. x).
But it only reduces to that normal form if you reduce the (\a. ...)
redex, not if you reduce its argument. So depending on evaluation
order you might not reach a normal form.
Max Bolingbroke ha scritto:
2009/3/21 Manlio Perillo :
Max Bolingbroke ha scritto:
These two packages allow Haskell programs to produce much richer
console output by allowing colorisation, emboldening and so on.
Do you plan to extend the package to any terminal, using terminfo database?
Man
Achim Schneider ha scritto:
Manlio Perillo wrote:
Do you plan to extend the package to any terminal, using terminfo
database?
Are there any non-ansi terminals left? I assumed they were extinct...
it'd come close to using EBCDIC.
http://groups.google.com/group/comp.unix.shell/browse_thread
hi,
What is the different between 'in beta normal form' and 'has beta normal
form' ? Does the former means the current form of the term is already in
normal form but the latter means that it is not a normal form yet and can be
reduced to be normal form? Like \x.x is in NF and (\x.x) (\x.x) has NF
Hello,
I'm writing a program for plotting vectorial functions and maybe
something else in the future. My goal is to be able to have the
following usage:
Prelude> :l Galo.hs
Prelude Galo> show3Dvec (\t -> (t, t, 0)) [0.0,0.01 .. 1.0]
* shows graph *
Prelude Galo> sh
I'm pleased to announce a new version of random-stream package.
In this version I have rewritten the internal API.
Now the package exposes a new System.Random.URandom module, with the
function:
urandom :: Int -> IO S.ByteString
This function is an interface to the system pseudo random num
On Sun, Mar 15, 2009 at 9:13 PM, Bryan O'Sullivan wrote:
> On Sun, Mar 15, 2009 at 8:40 PM, Alexander Dunlap
> wrote:
>>
>> I have noticed that in both Data.Binary and Data.Text (which is still
>> experimental, but still), the "decode" functions can be undefined
>> (i.e. bottom) if they encounter
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/gmap-0.1
Everything in the release is working. There's some fast map/trie
implementations and a bunch of map combinators. In Test.GMap there are
~800 lines of quickcheck properties. The tests use some undocumented
type hackery to allow the
In file included from ../pango/pango.h:31,
from pango-impl-utils.h:28,
from fonts.c:30:
../pango/pango-enum-types.h:12:9: error: macro names must be identifiers
../pango/pango-enum-types.h:14:9: error: macro names must be identifiers
../pango/pango-enum-types.h:17:
I didn't get any errors like that (nor do I remember ever having
them), though if you want to paste them here maybe I can help with them.
-Ross
On Mar 21, 2009, at 1:27 PM, Colin Adams wrote:
If I try this, pango fails to compile with lots of error messages
about error: macro names must be i
If I try this, pango fails to compile with lots of error messages
about error: macro names must be identifiers.
I think I've seen this before - some well-known Mac OSX problem? (I'm
a linux man myself - so I'm not used to the mac)
2009/3/21 Ross Mellgren :
> I tried making this work, but librsvg
Max Bolingbroke wrote:
These two packages allow Haskell programs to produce much richer
console output by allowing colorisation, emboldening and so on.
This will be a big help in my MUD driver. Thanks! :-)
Martijn.
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Hask
These two packages allow Haskell programs to produce much richer
console output by allowing colorisation, emboldening and so on.
Both Unix-like (OS X, Linux) and Windows operating systems are
supported (via a pure Haskell ANSI emulation layer for Windows).
Examples, screenshots, and lots more inf
Manlio Perillo wrote:
> Do you plan to extend the package to any terminal, using terminfo
> database?
>
Are there any non-ansi terminals left? I assumed they were extinct...
it'd come close to using EBCDIC.
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for copyright his
2009/3/21 Manlio Perillo :
> Max Bolingbroke ha scritto:
>>
>> These two packages allow Haskell programs to produce much richer
>> console output by allowing colorisation, emboldening and so on.
>>
>
> Do you plan to extend the package to any terminal, using terminfo database?
Manlio,
I don't pla
Max Bolingbroke ha scritto:
These two packages allow Haskell programs to produce much richer
console output by allowing colorisation, emboldening and so on.
Do you plan to extend the package to any terminal, using terminfo database?
Regards Manlio
___
Minor correction -- pango in general is installed with the .DMG of
Gtk... it's pangoft2 (the freetype2 bindings) that librsvg requires
and aren't provided.
-Ross
On Mar 21, 2009, at 12:35 PM, Ross Mellgren wrote:
I tried making this work, but librsvg requires pango, and pango is a
huge pa
I tried making this work, but librsvg requires pango, and pango is a
huge pain in the ass -- I managed to get the whole thing to compile,
but now it can't find any fonts, apparently due to some dynaloading
issues.
I think if you need any of the extended modules (e.g. svgcairo, gl)
that th
Hi,
I was looking at the list of Haskell GSOC 2009 project ideas, and I
came across the one in which we have to implement maps using
generalized tries. However, I also found this as one of the GSOC 2008
projects. I want to know if this project is still open, or the
required work has been done last
Hi all,
winio is an I/O library for Windows using Windows API functions and
has I/O completion port support. The main goal of this library is to
support Simon Marlow's new Handle API once he has added that to GHC.
The library also has a compatibility module for socket functions from
the network-by
Yep.
Michael: Haskell doesn't do miracles. It has a well-defined (however,
very cool) evaluation model, and the compiler in 99.9% realistic cases
optimizes it only by a constant factor. Things can't be much better
than that because it is extremely hard or theoretically impossible
(probably by some
On 2009 Mar 21, at 10:59, Sebastian Sylvan wrote:
2009/3/21 Adrian Neumann
Am 21.03.2009 um 13:30 schrieb Michael Mossey:
Thomas Davie wrote:
On 21 Mar 2009, at 00:16, Michael P Mossey wrote:
Hello, I'm totally new to Haskell. I'm thinking of using it for a
personal project, which is a gui-bas
2009/3/21 Adrian Neumann
>
> Am 21.03.2009 um 13:30 schrieb Michael Mossey:
>
>
>>
>> Thomas Davie wrote:
>>
>>> On 21 Mar 2009, at 00:16, Michael P Mossey wrote:
>>>
Hello, I'm totally new to Haskell. I'm thinking of using it for a
personal project, which is a gui-based musical score e
You should not rely on the compiler to spot such things. As far as I
know GHC doesn't do automatic caching (in many cases that would hurt
performance, I think). Have a look at http://haskell.org/haskellwiki/
Memoization perhaps.
Am 21.03.2009 um 14:02 schrieb Michael Mossey:
I understand a
Am 21.03.2009 um 13:30 schrieb Michael Mossey:
Thomas Davie wrote:
On 21 Mar 2009, at 00:16, Michael P Mossey wrote:
Hello, I'm totally new to Haskell. I'm thinking of using it for a
personal project, which is a gui-based musical score editor.
The rough situation of GUI programming on Hask
Hi Bas,
I'd like to share some thoughts with you.
Let's say I'm unable, for whatever reason, to force full evaluation of
the accumulator during a foldl.
So I have this huge build up of thunks, which causes a stack overflow
when the thunks are being reduced.
I wonder if I could write some
> "Ross" == Ross Mellgren writes:
Ross> While there is not a .dmg for Gtk2Hs, you can use a .dmg
Ross> installed GHC with a .dmg installed Gtk, and then build
Ross> gtk2hs straight on top of that, without having to deal with
Ross> the dual-GHC macports mess..
Ross>
http:
---
Haskell Weekly News
http://sequence.complete.org/hwn/20090321
Issue 110 - March 21, 2009
---
Welcome to issue 110 of HWN, a newsletter covering
Hi.
Assuming this configuration fragment:
library xxx
cc-options: -Wall
if flag(HAVE_URANDOM)
cc-options:-DHAVE_URANDOM
In case the HAVE_URANDOM flag is defined, what will be the value of the
used cc-options?
1) -DHAHE_URANDOM
2) -Wall -DHAHE_URANDOM
Thanks Man
On Fri, 2009-03-20 at 15:22 -0400, Jeff Heard wrote:
> As this continues to build, I guess the issue for me, and I'm willing
> to help with it, is trying to figure out how to redistribute programs
> written with gtk2hs. on Windows, people can just install the gtk2hs
> libraries via the installer -
On Fri, 2009-03-20 at 14:10 -0400, Jeff Heard wrote:
> cabal-install works for me. The one thing that would be REALLY REALLY
> nice (and I'm cc-ing Duncan on this) is a .dmg for Gtk2Hs on Mac OS X.
I'm sorry I can't directly help with this. I have no access to any
hardware running OS X. I presume
On Sat, Mar 21, 2009 at 12:52:49PM +0100, Achim Schneider wrote:
> Jon Fairbairn wrote:
>
> > That's where that particular design falls down. >>= is an
> > ugly symbol in the first place, and while the pun with a
> > lambda in the middle provides some intellectual
> > satisfaction, it doesn't out
Jon Fairbairn wrote:
> That's where that particular design falls down. >>= is an
> ugly symbol in the first place, and while the pun with a
> lambda in the middle provides some intellectual
> satisfaction, it doesn't outweigh the fussiness of its shape
> or the irrelevant associations. I hadn't t
Warren Harris writes:
> Hi Jon,
>
> I agree with much of your rant, and would agree that the
> logo is probably the least interesting about haskell, but I
> think that it's worth spending a little time to spiffy up
> haskell's image from a marketing perspective.
I don't disagree with that. I'
On 21 Mar 2009, at 01:10, Brandon S. Allbery KF8NH wrote:
On 2009 Mar 20, at 17:02, Hans Aberg wrote:
Therefore, as mentioned before, it might be best to install the GHC
binaries and install libraries like Gtk+ from MacPorts. There is
also Intel Gtk+ that binds directly to Aqua, the
This w
> I propose to use concordet voting to appoint a new king from the 100
> aspiring candidates ... ;)
Good point.. Just noticed that I managed to misspell Don Stewart's
name :( Sorry! And thanks for pointing that out!
Speaking of Concordet voiting.. :)
Have you checked out Arrow's impossibility th
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