Hello,
I have had exactly the same problem with my bindings to GSL, BLAS and LAPACK.
The foreign functions (!) randomly (but very frequently) produced NaN with
ghc-6.8.1 -O. As usual, I first thought that I had a subtle bug related to
the foreign pointers, but after a lot of refactoring,
Seth Gordon [EMAIL PROTECTED] writes:
Bioinformaticians are among the first to adopt functional
programming languages
From my experience, Bioinformatics use a mixture of langauges - C to
implement various algorithms, a bit of Java for UI-oriented stuff, and
Perl to tie it all together. (You
Hello Chad,
Thursday, November 15, 2007, 9:03:52 AM, you wrote:
I'd like to be able to use Data.Binary (or similar) for compression.
Say I have an abstract type Symbol, and for each value of Symbol I
have a representation in terms of some number of bits. For compression
to be efficient,
On Tue, 13 Nov 2007, Dan Piponi wrote:
On Nov 13, 2007 1:24 PM, Ryan Ingram [EMAIL PROTECTED] wrote:
I tend to prefer where, but I think that guards function declarations are
more readable than giant if-thens and case constructs.
Up until yesterday I had presumed that guards only applied
Simon Marlow wrote:
The only problem with this is that someone who isn't aware of this
convention might accidentally be ignoring compiled code, or might wonder
why their compiled code isn't being used. Well, perhaps this is less
confusing than the current behaviour; personally I find the
I'm also seeing unusual behavior from GSL under ghc-6.8.1. I get a
singular matrix error where there was none before, but if I prefix the
function's rhs with m `seq`, where m is the matrix in question, the
error goes away.
I'll try removing the seq and compiling with -fvia-C tomorrow to see
if I
Hi
What i have in mind is an interactive Haskell app which allows the
user to enter text, push buttons, select radio buttons and so on. As
I have already done a lot of xhtml coding I thought it might be
easier to operate the program entirely via a web browser. However,
I'm also interested in
Brent Yorgey wrote:
apfelmus, does someone pay you to write so many thorough, insightful and
well-explained analyses on haskell-cafe? I'm guessing the answer is 'no',
but clearly someone should! =)
Depending on length, my prices for posts range between λ9.99 and λ29.99 ;)
Regards,
apfelmus
On Thu, 15 Nov 2007, Jules Bean wrote:
Anecdotes have little value, but for what it's worth: in around 5 years
of ghc use, I have never, not even once, wanted to load the module I was
working on in its compiled form. I've occasionally noticed that
dependent modules get loaded quickly from
Hello Henning,
Thursday, November 15, 2007, 2:31:07 PM, you wrote:
Btw. I would write here
min 1 (max (-1) x)
or even better define a function for such clipping, since it is needed
quite often.
min 1 . max (-1) is pretty standard, although i renamed them:
atMax 1 . atLeast (-1)
--
On Thu, 15 Nov 2007, Bulat Ziganshin wrote:
Hello Henning,
Thursday, November 15, 2007, 2:31:07 PM, you wrote:
Btw. I would write here
min 1 (max (-1) x)
or even better define a function for such clipping, since it is needed
quite often.
min 1 . max (-1) is pretty standard,
On Nov 15, 2007 7:25 AM, Philip Armstrong [EMAIL PROTECTED] wrote:
On Thu, Nov 15, 2007 at 02:56:32PM +0900, Daisuke IKEGAMI wrote:
Dear Stefan and Haskell-Cafe,
Thanks to keeping your interest to the flymake-mode for Haskell.
Stefan wrote:
Could you explain to me what
Jonathan Cast wrote:
On 13 Nov 2007, at 11:03 PM, Jules Bean wrote:
Just to be clear: my proposal is that if you want it to go faster you do
ghci foo.hi
or
ghci foo.o
... so you still have the option to run on compiled code.
My suggestion is simply that ghci foo.hs is an instruction to
Hello,
Eaton (eaton.com, Eden Prairie, MN US) is seeking software engineers
for design and verification of electro-hydraulic control systems for
industrial, automotive, and aerospace applications. Though I am still
trying to get Haskell on the official job description, here are a few
of the
Can any of you give us a testcase for this, please?
Thanks
Ian
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On Thu, 15 Nov 2007 12:31:07 +0100, Henning Thielemann
[EMAIL PROTECTED] wrote:
On Tue, 13 Nov 2007, Dan Piponi wrote:
On Nov 13, 2007 1:24 PM, Ryan Ingram [EMAIL PROTECTED] wrote:
I tend to prefer where, but I think that guards function
declarations are
more readable than giant if-thens
On Wed, Nov 14, 2007 at 10:03:52PM -0800, Chad Scherrer wrote:
I'd like to be able to use Data.Binary (or similar) for compression.
Say I have an abstract type Symbol, and for each value of Symbol I
have a representation in terms of some number of bits. For compression
to be efficient,
It's worth saying that right now, all you have to do to get the source file
loaded is
:! touch M.hs
:reload
Put this in a macro, if you want:
:def src \s - return (:! touch ++s)
I hear the arguments in this thread, and others have suggested changes before:
On Thu, 2007-11-15 at 11:14 -0600, Nicolas Frisby wrote:
It seems the meaning of the -main-is switch for GHC and the Main-Is
build option for Cabal executables differ. With GHC, I can point to
any function main in any module, but in Cabal I must point to a
filename with precisely the module
Alberto Ruiz-2 wrote:
Hello,
I have had exactly the same problem with my bindings to GSL, BLAS and
LAPACK.
The foreign functions (!) randomly (but very frequently) produced NaN with
ghc-6.8.1 -O. As usual, I first thought that I had a subtle bug related to
the foreign pointers, but
duncan.coutts:
On Thu, 2007-11-15 at 15:56 -0200, Maurício wrote:
Hi,
Is there a Haskellforge somewhere, i.e.,
something like a sourceforge for open source
Haskell programs, with darcs, automatic
cabalization etc.? Has anyone tried that
already?
There is the Haskell Community
Hi Haskell Lovers,
Im trying to compile Vertigo (http://conal.net/Vertigo), which seems to be
a module from which I can really learn a lot of stuff.
However, it seems to use a Memo module, which does not seem to be part of
GHC (anymore?) As far as I understand, it uses a memo function to make
On Nov 15, 2007 9:01 AM, Jim Burton [EMAIL PROTECTED] wrote:
How would I go about converting the little get program at
http://darcs.haskell.org/http/test/get.hs to use a proxy server? I tried
adding a call to setProxy like this but it doesn't work:
I think it needs to be a real URL:
Alberto Ruiz-2 wrote:
Hmm, I' sorry... all seems to work well for me if I set -O -fvia-C for
building the library and for final program compilation. But I will also
try
to find a minimum test case. In the meantime I have sent to Ian
information
to expose the problem with my
On Wed, Nov 14, 2007 at 10:36:06PM -0800, Don Stewart wrote:
jon:
I'd like some free software to help me plot charts like the one from the
ray
tracer language comparison:
http://www.ffconsultancy.com/languages/ray_tracer/results.html
I was using Mathematica but its stopped
On Thursday 15 November 2007 19:58, SevenThunders wrote:
Alberto Ruiz-2 wrote:
Hello,
I have had exactly the same problem with my bindings to GSL, BLAS and
LAPACK.
The foreign functions (!) randomly (but very frequently) produced NaN
with ghc-6.8.1 -O. As usual, I first thought that I
olivier.boudry:
Hi all,
I'm writing a Haskell program to do some address cleansing. The program
uses the ByteString library.
Data.ByteString.Char8 documentations shows functions for removing
whitespace from start or end of a ByteString. Those functions are said to
be
Hi Don,
In fact I'm not really looking at performance, I don't expect performance to
be a big issue in my application.
I was just looking at using some simple functions found in the documentation
and avoid redefining them.
In fact dropSpace and dropSpaceEnd are doing exactly what I'm looking
olivier.boudry:
Hi Don,
In fact I'm not really looking at performance, I don't expect performance
to be a big issue in my application.
I was just looking at using some simple functions found in the
documentation and avoid redefining them.
In fact dropSpace and
I have a project where I want to store a data structure on a file, binary or
ascii. And I want to use haskell to read and write the file. I will have
about half a million records so it would be nice if the format was able to
load quickly. I guess I could, but I kind of want to avoid using XML.
bbrown:
I have a project where I want to store a data structure on a file,
binary or ascii. And I want to use haskell to read and write the
file. I will have about half a million records so it would be nice if
the format was able to load quickly. I guess I could, but I kind of
want to avoid
On Nov 16, 2007 12:35 AM, Arnar Birgisson [EMAIL PROTECTED] wrote:
[1]
I'm terribly sorry, that was meant to be:
[1]
http://www.onlamp.com/pub/a/onlamp/2007/07/12/introduction-to-haskell-pure-functions.html
sorry,
Arnar
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On Nov 15, 2007 10:33 AM, David Roundy [EMAIL PROTECTED] wrote:
Chart has rather a complicated API. I've written a simpler API (but
somewhat less flexible), if anyone's interested (Tim wasn't). My API is
closer in complexity (of use) to matlab's plotting.
I'd be interested, for one.
Cheers,
The good news is that my code compiles without error and much faster under
ghc 6.8.1.
The bad news is that there appear to be subtle bugs that did not occur when
I compiled things under
6.6.1. One issue is that my code is somewhat complex and links into a C
library as well.
The new behavior is
- I want to set timeouts on various IO operations in an existing
library, ftphs. However, even if I wrap every call in `block`, it's
unclear whether ftphs has been coded to deal with asynchronous
exceptions, or whether state could be rendered inconsistent. Is there
any solution for this aside
How would I go about converting the little get program at
http://darcs.haskell.org/http/test/get.hs to use a proxy server? I tried
adding a call to setProxy like this but it doesn't work:
get :: URI - IO String
get uri =
do
browse $ setProxy (Proxy myproxy:80 Nothing)
eresp -
On Thu, 2007-11-15 at 15:56 -0200, Maurício wrote:
Hi,
Is there a Haskellforge somewhere, i.e.,
something like a sourceforge for open source
Haskell programs, with darcs, automatic
cabalization etc.? Has anyone tried that
already?
There is the Haskell Community server
http://msdn2.microsoft.com/en-us/library/1w45z383(vs.71).aspx
I believe.
/g
On Nov 15, 2007 12:56 PM, Andrew Coppin [EMAIL PROTECTED] wrote:
I notice that in GHC 6.8.1, if I compile a runnably program, as well as
generating foo.exe, GHC now also generates a file foo.exe.manifest,
which
Hello,
Last week (?) Erik Meijer gave a talk at Google. Has a video been
uploaded somewhere?
Kind regards, Vasya
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olivier.boudry:
On 11/15/07, Don Stewart [EMAIL PROTECTED] wrote:
Let me know if the rule fires. If it isn't, that's a bug, essentially.
-- Don
Don,
As you can see the rule fires.
C:\Tempghc --make -O2 -fasm -ddump-simpl-stats DropSpaceTest.hs
...
3
No, Haskell functions take exactly one argument.
On Nov 14, 2007 1:05 AM, Robin Green [EMAIL PROTECTED] wrote:
On Tue, 13 Nov 2007 13:51:13 -0800
Dan Piponi [EMAIL PROTECTED] wrote:
Up until yesterday I had presumed that guards only applied to
functions. But I was poking about in the
On Thu, Nov 15, 2007 at 09:19:10AM -0500, Denis Bueno wrote:
On Nov 15, 2007 7:25 AM, Philip Armstrong [EMAIL PROTECTED] wrote:
I can pass on patches if anyone cares.
I care!
Will dig them out asap then!
Phil
--
http://www.kantaka.co.uk/ .oOo. public key:
droundy:
Chart has rather a complicated API. I've written a simpler API (but
somewhat less flexible), if anyone's interested (Tim wasn't). My API is
closer in complexity (of use) to matlab's plotting.
I'd describe the API as verbose rather than complicated. It takes 5-10
lines of haskell to
Hello,
I have a Haskell script that contains several functions that are
implemented in terms on interact. When I do a function application,
Hugs/ghci is waiting for input from stdin. How do one denote EOF from stdin,
so that the function evaluation can continue and do the IO () action , ie..
So I've been trying to get my QuickCheck tests to run in parallel. I did take a
look at Don's Parallel QuickCheck library
http://www.cse.unsw.edu.au/~dons/pqc.html, but I didn't like how much code it
had in it and I figured it'd be a good exercise to try to do myself.
After quite a lot of help
I think google talks are often hosted at video.google.com, assuming the
speaker agrees to this and it can be publicly disclosed.
--
Anwar Ghuloum 葛安华
Microprocessor Technology Lab, Intel
_
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
org] On Behalf Of Galchin Vasili
Sent:
On Nov 15, 2007 6:25 PM, Galchin Vasili [EMAIL PROTECTED] wrote:
Hello,
I have a Haskell script that contains several functions that are
implemented in terms on interact. When I do a function application,
Hugs/ghci is waiting for input from stdin. How do one denote EOF from stdin,
so
Hi,
Is there a Haskellforge somewhere, i.e.,
something like a sourceforge for open source
Haskell programs, with darcs, automatic
cabalization etc.? Has anyone tried that
already?
Maurício
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On Thu, Nov 15, 2007 at 11:10:01AM -0800, Chad Scherrer wrote:
Almost all 'real users' just use Codec.Compression.GZip. It's very
fast, very compositional, and (perhaps suprisingly) almost as
effective as application-specific schemes.
I was about to say the same thing. So so much
To follow up on my previous post (Asynchronous Exceptions and the
RealWorld), I've decided to put together something more concrete in
the hopes of eliciting response.
I'm trying to write a library of higher-level concurrency
abstractions, in particular for asynchronous systems programming. The
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