Henning Thielemann wrote:
On Sat, 22 Nov 2008, Janis Voigtlaender wrote:
Definitely. And that surfaces even in quite innocently looking programs
and statements about them. The introductory example of the following
technical report may be amusing in that respect:
http://wwwtcs.inf.tu-dresden.d
On Sat, Nov 22, 2008 at 1:20 PM, Jason Dusek <[EMAIL PROTECTED]> wrote:
> Ryan Ingram <[EMAIL PROTECTED]> wrote:
>> ...persistent data structures tend to have much worse constant
>> factors and those factors translate to a general 2x-3x
>> slowdown.
>
> Can you explain why that is, or provide a ci
alexey.skladnoy:
> >
> > This upsets me. We need to get on with doing this properly. The
> > System.IO.UTF8 module is a useful interim workaround but we're not using
> > it properly most of the time.
> >
> > ... skipped ...
> >
> > The right thing to do is to make Prelude.putStrLn do the right thin
>
> This upsets me. We need to get on with doing this properly. The
> System.IO.UTF8 module is a useful interim workaround but we're not using
> it properly most of the time.
>
> ... skipped ...
>
> The right thing to do is to make Prelude.putStrLn do the right thing. We
> had a long discussion on
Ryan Ingram wrote:
On Sat, Nov 22, 2008 at 5:33 AM, Janis Voigtlaender
<[EMAIL PROTECTED]> wrote:
You can generally make a persistent data structure with the same
asymptotic bounds as the ephemeral structure, ...
I would be very careful with the "generally" here. At least, I am not
aware that
On 11/22/08, Don Stewart <[EMAIL PROTECTED]> wrote:
> ninegua:
>> Hi everyone,
>>
>> It's sad to see the OpenGL binding being dropped from GHC binary
>> installers starting from 6.10. Though this issue has been brought up
>> and discussed before, I'm sure a lot of people who based their work on
>>
On Sun, 2008-11-23 at 01:40 +0100, Henning Thielemann wrote:
> On Sat, 22 Nov 2008, Thomas Schilling wrote:
>
> > It's a pattern match error, implemented by throwing an asynchronous
> > exception. The idea being, that we only have one mechanism (well, an
> > synchronous exceptions, thrown via thr
That post is by David Sankel (camior on #haskell), not by me.
My last name has two "t"s.
Good luck, - Conal (Elliott)
On Sat, Nov 22, 2008 at 4:06 PM, Greg Fitzgerald <[EMAIL PROTECTED]> wrote:
> >$ cabal install OpenGL
>
> HOpenGL installs easily with cabal-install, but most HOpenGL exam
On Sat, 22 Nov 2008, Thomas Schilling wrote:
It's a pattern match error, implemented by throwing an asynchronous
exception. The idea being, that we only have one mechanism (well, an
synchronous exceptions, thrown via throwIO).
Yes, I know that there's a difference between "error" and "excepti
I'm not sure.. can MSVC compiled libraries be intermixed with mingwin
libraries? I see Conal has advised installing mingwin as part of his
GLUT packaging.
-- Jeff
On Sat, Nov 22, 2008 at 7:06 PM, Greg Fitzgerald <[EMAIL PROTECTED]> wrote:
>>$ cabal install OpenGL
>
> HOpenGL installs easil
>$ cabal install OpenGL
HOpenGL installs easily with cabal-install, but most HOpenGL examples
and tutorials also use GLUT, which is not so painless on Windows.
Luckily Conal Elliot just recently posted detailed instructions of how
to do it:
http://netsuperbrain.com/blog/posts/freeglut-windows
Hi.
I read 'write yourself a scheme in 48 hours' and try to modify its code.
now part of code is :
parseList :: Parser LispVal
parseList = liftM List $ sepEndBy parseExpr spaces
parseDottedList :: Parser LispVal
parseDottedList = do
head <- endBy parseExpr spaces
tail <- char '.' >> spaces >>
It's a pattern match error, implemented by throwing an asynchronous
exception. The idea being, that we only have one mechanism (well, an
synchronous exceptions, thrown via throwIO).
Yes, I know that there's a difference between "error" and "exception",
but I would argue that which is which depend
On Sat, 22 Nov 2008, Janis Voigtlaender wrote:
Definitely. And that surfaces even in quite innocently looking programs
and statements about them. The introductory example of the following
technical report may be amusing in that respect:
http://wwwtcs.inf.tu-dresden.de/~voigt/TUD-FI08-08.pdf
Please advise how to write Unicode string, so this example would work:
main = do
putStrLn "Les signes orthographiques inclus les accents (aigus, grâve,
circonflexe), le tréma, l'apostrophe, la cédille, le trait d'union et la
majuscule."
> (...)
Besides the Haskell stuff, you probably want t
Though many see it as "losing" information, I agree wholeheartedly
with your proposal to change the AST.
It's better to have an AST that conveys less information, but
truthfully, than to have an AST that purports to convey more
information, when in fact that information is false.
In mos
Ryan Ingram <[EMAIL PROTECTED]> wrote:
> ...persistent data structures tend to have much worse constant
> factors and those factors translate to a general 2x-3x
> slowdown.
Can you explain why that is, or provide a citation for it?
It's not something I've found easy to Google.
--
_jsn
___
---
Haskell Weekly News
http://sequence.complete.org/hwn/20081122
Issue 94 - November 22, 2008
---
Welcome to issue 94 of HWN, a newsletter covering
On Sat, 22 Nov 2008, Thomas Schilling wrote:
Be careful, though. This only works if there's a single constructor
for your exception type. If there are multiple, you should write it
like this:
thing_to_try `catch` \(e :: MyErrorType) -> case e of MyError1 _ ->
..; MyError2 _ -> ...
If you wr
ninegua:
> Hi everyone,
>
> It's sad to see the OpenGL binding being dropped from GHC binary
> installers starting from 6.10. Though this issue has been brought up
> and discussed before, I'm sure a lot of people who based their work on
> OpenGL would share the same sympathy.
$ cabal install
Hi everyone,
It's sad to see the OpenGL binding being dropped from GHC binary
installers starting from 6.10. Though this issue has been brought up
and discussed before, I'm sure a lot of people who based their work on
OpenGL would share the same sympathy.
I'm not here to argue whether this decisi
On Sat, 2008-11-22 at 10:02 -0800, Don Stewart wrote:
> Use the UTF8 printing functions,
>
> import qualified System.IO.UTF8 as U
>
> main = U.putStrLn "Ну и где этот ваш хвалёный уникод?"
>
> Running this,
>
> *Main> main
> Ну и где этот ваш хвалёный уникод?
This upsets me.
On Sat, Nov 22, 2008 at 5:33 AM, Janis Voigtlaender
<[EMAIL PROTECTED]> wrote:
>> You can generally make a persistent data structure with the same
>> asymptotic bounds as the ephemeral structure, ...
>
> I would be very careful with the "generally" here. At least, I am not
> aware that this has bee
alexey.skladnoy:
> >
> > That really ought to work. Is the file encoded in UTF-8 (rather than,
> > eg. latin-1)?
> >
> This should pretend to work. Simple print functions garble unicode characters.
> For example :
>
> > putStrLn "Ну и где этот ваш хвалёный уникод?"
>
> prints following output
>
Any compromised uploader machine with stored passwords can
be used to upload compromising code, which will propagate to all
downloaders.
It doesn't really matter whether a compromised machine stores a password or
not. If you upload anything using a compromised machine, the attacker
has the opp
It seems to me that fixity information behaves more like semantics
than like syntax. For instance, fixities may be imported, and obey
namespacing rules. Knowing and correctly handling these rules seems
beyond the scope of a mere parser: I would hope that a single Haskell
file could be parsed withou
On Sat, 2008-11-22 at 15:27 +, Thomas Schilling wrote:
> >*Main> tryJust errorCalls $ print $ [] !! 23
> >tryJust errorCalls $ print $ [] !! 23^JLeft Prelude.(!!):
> index
> >too large
> >
> >*Main> tryJust errorCalls $ print $ throw NonTermination
> >try
On Sat, Nov 22, 2008 at 03:11:34PM -, Claus Reinke wrote:
>> You only need an account for uploading packages. If you do not want to
>> have to enter your user name or password interactively when you run
>> "cabal upload" then you can put them in the config file:
>>
>> username:
>> password:
>
>
2008/11/22 David F. Place <[EMAIL PROTECTED]>:
> On Sat, 2008-11-22 at 11:33 +, Thomas Schilling wrote:
>> Be careful, though. This only works if there's a single constructor
>> for your exception type. If there are multiple, you should write it
>> like this:
>>
>> thing_to_try `catch` \(e :
On Sat, 2008-11-22 at 15:11 +, Claus Reinke wrote:
> > You only need an account for uploading packages. If you do not want to
> > have to enter your user name or password interactively when you run
> > "cabal upload" then you can put them in the config file:
> >
> > username:
> > password:
>
You only need an account for uploading packages. If you do not want to
have to enter your user name or password interactively when you run
"cabal upload" then you can put them in the config file:
username:
password:
That sounds like a very bad idea, and should not be encouraged!
Any compromised
On Sat, 2008-11-22 at 11:33 +, Thomas Schilling wrote:
> Be careful, though. This only works if there's a single constructor
> for your exception type. If there are multiple, you should write it
> like this:
>
> thing_to_try `catch` \(e :: MyErrorType) -> case e of MyError1 _ ->
> ..; MyErr
Alexey Khudyakov wrote:
putStrLn "Ну и где этот ваш хвалёный уникод?"
:-)
--
Dr. Janis Voigtlaender
http://wwwtcs.inf.tu-dresden.de/~voigt/
mailto:[EMAIL PROTECTED]
___
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailma
Sean Leather wrote:
EMGM [1] has a generic zipWith [2]:
zipWith :: FRep3 ZipWith f => (a -> b -> c) -> f a -> f b -> Maybe (f c)
This is generic according to the container type 'f'. A particular
specialization of this is zip:
zip :: FRep3 ZipWith f => f a -> f b -> Maybe (f (a, b))
Al
On Fri, 2008-11-21 at 16:12 -0800, Ahn, Ki Yung wrote:
> I am just curious about how cabal report works.
>
> I recently figured out that there is a report command in cabal and it
> reports the reports generated by --build-reports option when building a
> package.
>
> Is this because I don't have
Excerpts from Dmitri O.Kondratiev's message of Sat Nov 22 05:40:41 -0600 2008:
> Please advise how to write Unicode string, so this example would work:
>
> main = do
> putStrLn "Les signes orthographiques inclus les accents (aigus, grâve,
> circonflexe), le tréma, l'apostrophe, la cédille, le tr
Ryan Ingram wrote:
On Tue, Nov 18, 2008 at 12:46 PM, Luke Palmer <[EMAIL PROTECTED]> wrote:
But when these persistent data structures are used in a
single-threaded way, why should we not hope for the performance to be
comparable?
If you can guarantee single-threaded use, then you can just us
Peter Hercek wrote:
But Haskell with Control.Exception extension has more values
of all types since they can be thrown and later caught and
investigated at that place.
Maybe the last sentence of section 2.1 (_|_ Bottom) of
"Haskell/Denotational semantics" should be clarified better.
http:
>
> That really ought to work. Is the file encoded in UTF-8 (rather than,
> eg. latin-1)?
>
This should pretend to work. Simple print functions garble unicode characters.
For example :
> putStrLn "Ну и где этот ваш хвалёный уникод?"
prints following output
C 8 345 MB>B 20H E20;Q=K9 C=8:>4?
Not
> Of course, this would require a change to Template Haskell, so a
> second-best solution would be to forbid unparenthesised expressions in
> my quasiquoter. Then, parsing can proceed correctly without knowing
> the fixities. This would be easiest to do if haskell-src-exts changed
> its AST in a si
2008/11/22 Dmitri O.Kondratiev <[EMAIL PROTECTED]>:
> Please advise how to write Unicode string, so this example would work:
>
> main = do
> putStrLn "Les signes orthographiques inclus les accents (aigus, grâve,
> circonflexe), le tréma, l'apostrophe, la cédille, le trait d'union et la
> majuscul
Please advise how to write Unicode string, so this example would work:
main = do
putStrLn "Les signes orthographiques inclus les accents (aigus, grâve,
circonflexe), le tréma, l'apostrophe, la cédille, le trait d'union et la
majuscule."
I get the following error:
hello.hs:4:68:
lexical erro
Be careful, though. This only works if there's a single constructor
for your exception type. If there are multiple, you should write it
like this:
thing_to_try `catch` \(e :: MyErrorType) -> case e of MyError1 _ ->
..; MyError2 _ -> ...
If you write `catch` (MyError1 ...) and a MyError2 is thr
[moved to haskell-cafe]
{-# LANGUAGE CPP #-}
module Packer where
#define FLASH_APP_START 1
#define FLASH_APP_END2
#define INSERT_SECTION(x) (#x, (FLASH_##x##_START, FLASH_##x##_END))
The CPP stringization operator # and the token-catenation operator ##
are ANSI additions over the trad
On Sat, Nov 22, 2008 at 2:31 AM, Owen Smith <[EMAIL PROTECTED]> wrote:
> 2. There's a lot I need to learn about good Haskell style, especially
> coming from a C++ background. Even my experience in Lisp seems to
> result in way more parentheses than Haskell coders are comfortable
> with. :-) In part
On Sat, Nov 22, 2008 at 11:31 AM, Owen Smith <[EMAIL PROTECTED]> wrote:
> I'm a longtime Haskell-curious programmer who, after a few aborted
> attempts at getting started and long nights staring at academic
> papers, finally managed to get the bug. I've been pleased with my
> progress so far, but a
Owen Smith wrote:
1. Contending with the use of frequently unfamiliar non-alphanumeric
operators has been an uphill battle for me. I think the main reason
for this is that I've had no luck in Googling up their definitions (my
primary approach for dealing with every other unknown in the Haskell
un
Greetings,
I'm a longtime Haskell-curious programmer who, after a few aborted
attempts at getting started and long nights staring at academic
papers, finally managed to get the bug. I've been pleased with my
progress so far, but a couple of things have bugged me enough to seek
advice from the rest
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