Yang wrote:
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
On 11/16/07, Valery V. Vorotyntsev [EMAIL PROTECTED] wrote:
Add the following lines to your ~/.emacs:
Adding buffer name to confirmation message:
--- BEGIN ---
(defun delete-trailing-whitespace-if-confirmed ()
Delete all the trailing whitespace across the current buffer,
asking user
Simon Peyton-Jones wrote:
Alberto, SevenThunders, Joel,
Glark. This is not good. Thank you for being so polite about it. And
thanks for working on a reproducible test case -- without that we are 100%
stuck.
We did fix one just-possibly-related bug in 6.8 recently, which concerned
On 11/16/07, Denis Bueno [EMAIL PROTECTED] wrote:
For one thing, if you happen to write code shared with other people
who do not use this hook, then you may end up causing *huge* numbers
of spurious differences in diff(1) output. There may be an easy way
to deal with this, but, it is a
Hi
I understand 2%4 will construct a fraction in Haskell. I've tried
this in GHCI but got an error message. Is there such an operator in
Prelude and if so how is it applied?
Cheers,
Paul
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This is another Haskell style question.
I had some trouble with the pretty printer that comes with GHC, so I
translated one written in Standard ML. I have already translated the
program into C, so rewriting it in Haskell was quick and easy for me.
The Standard ML version uses a reference cell
On Fri, 16 Nov 2007, jeff p wrote:
A function is an expression whose type is an arrow; e.g. Int - Int.
The type of taxRate is (Fractional t) = t.
I had this misunderstanding too, when starting with Haskell. In other
languages there are functions with zero, one or more arguments. In
contrast
Hi Bulat,
The released version of WinHugs does not support Ctrl+Z or Ctrl+D, but
the development builds do.
btw, are you plan to release hugs version compatible with ghc 6.8?
That would make sense, and I suspect Ross will want to (he's in charge
of Hugs stuff). I am super-busy until after
Just out of curiosity, what LAPACK and BLAS implementation is causing
problems? I have no idea if there is anything related, but I have
been having similar sounding problems with python when using the
latest ATLAS library on 64 bit core 2 machines. I am beginning to
suspect that there
John D. Ramsdell wrote:
This is another Haskell style question.
I had some trouble with the pretty printer that comes with GHC, so I
translated one written in Standard ML. I have already translated the
program into C, so rewriting it in Haskell was quick and easy for me.
Concerning the
Alberto, SevenThunders, Joel,
Glark. This is not good. Thank you for being so polite about it. And thanks
for working on a reproducible test case -- without that we are 100% stuck.
We did fix one just-possibly-related bug in 6.8 recently, which concerned the
use of {-# UNPACK #-} on strict
On Nov 16, 2007 12:05 PM, Valery V. Vorotyntsev [EMAIL PROTECTED] wrote:
On 11/16/07, Brent Yorgey [EMAIL PROTECTED] wrote:
Nice! Is there a way to have this only run if the current buffer is in
haskell-mode? I'd add it myself but I've not yet taken the plunge to being
an elisp hacker.
On 11/16/07, Duncan Coutts [EMAIL PROTECTED] wrote:
On Thu, 2007-11-15 at 21:55 -0500, Olivier Boudry wrote:
By the way, what's the reason dropSpaceEnd is defined but not exported
nor used through a rule? I'm just curious.
We decided when trying to standardise the API to start with just
This actually clears up something that's been bothering me for some
time. I've never really like syntax of types for functions with
multiple arguments. Using the same token, -, to separate both
arguments and the result seems very poor, because when reading a type
you don't know if the value
On Fri, Nov 16, 2007 at 02:44:33PM +, PR Stanley wrote:
I understand 2%4 will construct a fraction in Haskell. I've tried this in
GHCI but got an error message. Is there such an operator in Prelude and if
so how is it applied?
It's not in the Prelude, it's in the Ratio module IIRC.
Phil
Hi
The released version of WinHugs does not support Ctrl+Z or Ctrl+D, but
the development builds do.
If you download:
http://haskell.org/hoogle/other/winhugs-interact-fixes-2006-oct-25.zip
and replace the WinHugs.exe with this new one then you should get that
functionality.
Thanks
Neil
On
On Thu, 2007-11-15 at 21:55 -0500, Olivier Boudry wrote:
By the way, what's the reason dropSpaceEnd is defined but not exported
nor used through a rule? I'm just curious.
We decided when trying to standardise the API to start with just the
equivalents of the Data.List functions. We have
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 name Main. This is tying my hands
with regard to organizing a
On Nov 16, 2007 12:26 AM, Lennart Augustsson [EMAIL PROTECTED] wrote:
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
oleg-at-pobox.com |haskell-cafe| wrote:
Yang wrote:
(Something like this is straightforward to build if I abandon
Concurrent Haskell and use cooperative threading, and if the
operations I wanted to perform could be done asynchronously.)
All operations could be done asynchronously, at least on
Yang wrote:
Furthermore, is there any way to embed this information [about async
execptions] in the type system, so that Haskellers don't produce
async-exception-unaware code? (Effectively, introducing checked
interrupts?)
Yes, it is possible to make the information about exceptions and
Hello Duncan,
Friday, November 16, 2007, 2:43:05 PM, you wrote:
Alternatively, someone should make the case for why it should be added
to bytestring but not list.
the reason is very simple - FPS lib is upgradeable, so there is no
problems if its various versions are not compatible with each
but isn't there a short text that describes in detail why foldl' is
different from foldl and why foldr is better in many cases? I thought
this faq would have been cached already :)
Perhaps you're thinking of http://haskell.org/haskellwiki/Stack_overflow ?
-Brent
On Nov 16, 2007 9:44 AM, PR Stanley [EMAIL PROTECTED] wrote:
Hi
I understand 2%4 will construct a fraction in Haskell. I've tried
this in GHCI but got an error message. Is there such an operator in
Prelude and if so how is it applied?
Cheers,
Paul
It's in Data.Ratio.
Prelude :m
Justin Bailey wrote:
I think it needs to be a real URL:
setProxy (Proxy http://myproxy:80; Nothing)
Justin
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The docs say
On Nov 16, 2007 11:14 AM, Valery V. Vorotyntsev [EMAIL PROTECTED] wrote:
Add the following lines to your ~/.emacs:
--- BEGIN OF ELISP CODE ---
;(global-set-key (kbd f9 s) 'delete-trailing-whitespace)
(defun delete-trailing-whitespace-if-confirmed ()
Delete all the trailing
nicolas.frisby:
I've noticed a few posts on the cafe, including my own experience,
where the spine-strictness of the Binary instance for lists caused
some confusion. I'd like to suggest an approach to preventing this
confusion in the future, or at least making it easier to resolve.
Having
Calvin Smith wrote:
I really look forward to apfelmus' consistently outstanding
explanations on haskell-cafe.
If some of the especially good ones were bundled up as book --
*Intermediate/Advanced Functional Programming with Haskell* -- I would
buy it sight unseen (hint, hint).
:)
I intend
On 2007-11-16, Yang [EMAIL PROTECTED] wrote (quoting a paper):
This style of concurrency is, of course, not new. Component
architectures where data flows through components (rather than
control) have been called 'actor-oriented' [35]. These can take many
forms. Unix pipes resemble PN, although
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 more
efficient than the dropWhile / reverse
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 flycheck_haskell.pl does, and give an
example of a problematic situation solved by the use
dons:
nicolas.frisby:
I've noticed a few posts on the cafe, including my own experience,
where the spine-strictness of the Binary instance for lists caused
some confusion. I'd like to suggest an approach to preventing this
confusion in the future, or at least making it easier to resolve.
Simon, I have only tested 32-bit machines, I will try to test also on 64-bit.
Michael, I have also observed strange ATLAS behavior. For example, I can make
atlas3-sse2 segfault on big matrices (1000x1000) in ubuntu 6.06 and 7.04, so
I typically use atlas3-base. In fact, I found a similar
Sebastian Sylvan wrote:
On Nov 15, 2007 6:56 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 appears to contain some kind of XML data. Anybody know
I've noticed a few posts on the cafe, including my own experience,
where the spine-strictness of the Binary instance for lists caused
some confusion. I'd like to suggest an approach to preventing this
confusion in the future, or at least making it easier to resolve.
Having decided that it is
Hi
Under Hugs and Yhc, showing a Ratio 1%2 gives 1 % 2. Under GHC
showing 1%2 gives 1%2. Does the standard say anything about this? Is
someone wrong? And how do Yhc/nhc/Hugs pass Bernouilli in the Nofib
suite given that the output doesn't match?
Thanks
Neil
On Thu, 15 Nov 2007, Duncan Coutts wrote:
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
On Thu, Nov 15, 2007 at 10:35:06PM -, Tim Docker wrote:
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
J. Garrett Morris wrote:
http://msdn2.microsoft.com/en-us/library/1w45z383(vs.71).aspx
I believe.
Interesting. Not sure what the connection between Haskell and .NET is...
(But then, despite a lot of research, I don't know what .NET is.)
___
briqueabraque:
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?
We use
http://community.haskell.org/
which you can ask for an account on.
with darcs
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 RuleFired
1 FPS pack/packAddress
2 FPS
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 appears to contain some kind of XML data. Anybody know anything
about this mysterious file?
___
Hello Neil,
Friday, November 16, 2007, 3:07:57 PM, you wrote:
The released version of WinHugs does not support Ctrl+Z or Ctrl+D, but
the development builds do.
btw, are you plan to release hugs version compatible with ghc 6.8?
--
Best regards,
Bulatmailto:[EMAIL
On Nov 15, 2007 6:56 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 appears to contain some kind of XML data. Anybody know anything
about this
Google's Tech Talks channel is at
http://www.youtube.com/googletechtalks. There doesn't seem to be any
video of Erik Meijer there.
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On 11/16/07, Brent Yorgey [EMAIL PROTECTED] wrote:
Nice! Is there a way to have this only run if the current buffer is in
haskell-mode? I'd add it myself but I've not yet taken the plunge to being
an elisp hacker.
Try adding ``(eq major-mode 'haskell-mode)'' after the `and' ..
.. but why
Add the following lines to your ~/.emacs:
--- BEGIN OF ELISP CODE ---
;(global-set-key (kbd f9 s) 'delete-trailing-whitespace)
(defun delete-trailing-whitespace-if-confirmed ()
Delete all the trailing whitespace across the current buffer,
asking user for confirmation.
(if (and
John Lato wrote:
This actually clears up something that's been bothering me for some
time. I've never really like syntax of types for functions with
multiple arguments. Using the same token, -, to separate both
arguments and the result seems very poor, because when reading a type
you don't
On Nov 16, 2007 2:12 PM, Neil Mitchell [EMAIL PROTECTED] wrote:
Under Hugs and Yhc, showing a Ratio 1%2 gives 1 % 2. Under GHC
showing 1%2 gives 1%2. Does the standard say anything about this? Is
someone wrong? And how do Yhc/nhc/Hugs pass Bernouilli in the Nofib
suite given that the output
Neil Mitchell wrote:
Hi
Under Hugs and Yhc, showing a Ratio 1%2 gives 1 % 2. Under GHC
showing 1%2 gives 1%2. Does the standard say anything about this? Is
someone wrong?
Yes, ghc is wrong here, the Haskell 98 report [1] specifies:
instance (Integral a) = Show (Ratio a) where
Hi,
For those of you who are interested in using Haskell in client-side
web application programming:
I have added a new demo/test program to this Wiki page (Does it leak?):
http://haskell.org/haskellwiki/Yhc/Javascript
This demo program shows some progress made since the first
announcement of
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