On Wed, Mar 04, 2009 at 10:59:53PM -0500, Brandon S. Allbery KF8NH wrote:
On 2009 Mar 4, at 21:40, Magicloud Magiclouds wrote:
Could someone give me a sample or something I could learn from? Thanks.
(xmobar is open source, you could look through its source)
xmobar is not open source. xmobar
On Thu, Mar 05, 2009 at 12:50:20PM -0500, Brandon S. Allbery KF8NH wrote:
On 2009 Mar 5, at 8:21, Andrea Rossato wrote:
xmobar is not open source. xmobar is FREE software!
I don't do fundamentalist religion...
qualifying as fundamentalism the avoidance of cheap marketing
strategies is just
://code.google.com/p/citeproc-hs/issues
Hope you'll enjoy,
Andrea Rossato
[1] http://www.scripps.edu/~cdputnam/software/bibutils/
[2] http://code.haskell.org/citeproc-hs/
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by Zotero for bibliographic style formatting, and a huge
number of CSL styles have been developed by the Zotero community.
More information, with installation instructions, can be found here:
http://code.haskell.org/citeproc-hs/
Hope you'll enjoy,
Andrea Rossato
[1] http://code.haskell.org/hs-bibutils
On Wed, Dec 10, 2008 at 12:30:56PM +, Duncan Coutts wrote:
If do recommend reading the FFI spec. It's quite readable and explains a
lot of the issues. Getting familiar with the Foreign libraries will help
too. The most important bits are understanding ForeignPtr and the
Storable class.
I
For later reference: I created a minimal test case to illustrate the
issue and moved to the (hopefully) more appropriate
glasgow-haskell-users list:
http://www.haskell.org/pipermail/glasgow-haskell-users/2008-December/016312.html
cheers,
andrea
On Sun, Dec 07, 2008 at 07:08:28PM +0100, Andrea
Hello,
I know that this is somehow a recurring question, still the archives
have not been helpful for finding a working solution.
I'm writing the bindings[1] to bibutils[2], a set of utilities for
converting from and to different bibliographic databases (MODS,
bibtex, etc.).
bibutilis uses a
Hello,
suppose a simple C function like this:
void printStuff(FILE *f)
{
fprintf (f, Hello World\n);
}
In order to use it I need to import fopen and pass to it a Ptr CFile:
foreign import ccall unsafe fopen fopen :: CString - CString - IO (Ptr
CFile)
foreign import ccall unsafe fclose
On Wed, Dec 03, 2008 at 07:08:00PM +0300, Bulat Ziganshin wrote:
Hello Andrea,
Wednesday, December 3, 2008, 5:09:21 PM, you wrote:
How can I pass to printStuff a stdout FILE pointer?
afair, stdout syntax used to import variables. it was discussed
just a day or two ago :)
you mean
Hello Bulat,
On Wed, Dec 03, 2008 at 07:26:39PM +0300, Bulat Ziganshin wrote:
either some error in the code (i neevr used this feature) or stdout
may be defile by a macro.
the second you said:
/* C89/C99 say they're macros. Make them happy. */
(from stdio.h)
can you try to define
On Mon, Dec 01, 2008 at 05:30:33PM -0800, Judah Jacobson wrote:
You can limit the size of that stub file using:
foreign import ccall progname progname :: Ptr (Ptr CChar)
which lets you access that global variable and write the
getters/setters in Haskell rather than C.
this solves my
Hello,
I'm writing the bindings to a C library which uses, in some functions,
global variables.
To make it clearer, those functions need a global variable to be
defined. A C program using my_function, one of the library functions,
would look like:
char progname[] = a_program_name;
int
main(
Hi Gwern,
On Fri, Sep 19, 2008 at 09:01:46PM -0400, Gwern Branwen wrote:
Hi Andrea. So I was looking at the README. Does citeproc-hs only
support adding refs from a .xml file when one's written in Pandoc
markdown? That is, I don't see how I could take a .lhs file and a .bib
file and produce
On Sun, Sep 14, 2008 at 02:24:23PM -0300, Marco Túlio Gontijo e Silva wrote:
and the result of ls only after I press a key. Does getChar blocks the
other threads?
yes, but you can use forkOS from Control.Concurrent and compile with
-threaded.
See the relevant documentation for the details.
and suggestions that made it possible to come
to something usable.
John MacFarlane, the author of Pandoc, has been very supportive of the
project and provided a lot of useful feed back, comments and
suggestions.
Hope you'll enjoy,
Andrea Rossato
Hi,
the Hackage upload script performs some checks on the packages being
uploaded. In my case, a library, I need to use the cabal generated
Paths_package file to access some locale data stored in a data file
directory.
This requires to include in hs-source-dirs dist/build/autogen,
which doesn't
On Sun, Sep 07, 2008 at 03:35:40PM +0200, Pierre-Edouard Portier wrote:
Hi!
Is there a way to generate a data model and a set of picklers from an XML (or
RelaxNG) Schema using the HXT tool box?
not that I'm aware of. There's something for generating a data type
and an access interface from
Hello,
I'm using HXT for writing a Citation Style Language
(http://xbiblio.sourceforge.net) implementation in Haskell and I'm
trying to use the hxt pickler library to parse XML data contained in
elements that can be interleaved, that is to say, elements that can
appear in any order within other
On Thu, Jun 26, 2008 at 04:11:58PM +0200, Andrea Rossato wrote:
Hello,
I'm using HXT for writing a Citation Style Language
(http://xbiblio.sourceforge.net) implementation in Haskell and I'm
trying to use the hxt pickler library to parse XML data contained in
elements that can be interleaved
you will enjoy!
Andrea Rossato
What's new
==
There are a lot of changes since the last release:
a. Configuration:
- removed xPos, yPos, width, height, align, and refresh
configuration options;
- added position and alignSep configuration options: the first is
used to set
On Wed, Nov 07, 2007 at 10:36:05AM +0100, Thomas Schilling wrote:
On Tue, 2007-11-06 at 19:20 -0800, Michael Vanier wrote:
It looks as if hoogle isn't working. I get 404s whenever I try to do any
search on hoogle.
Mike
Yes, that's because the ghc-docs now have been slightly
On Tue, Oct 16, 2007 at 08:03:52PM -1000, Tim Newsham wrote:
A tutorial on the Curry-Howard Correspondence in Haskell:
http://www.thenewsh.com/%7Enewsham/formal/curryhoward/
Feedback appreciated.
Very clear and useful for me. Thank you for sharing it.
Andrea
On Mon, Sep 24, 2007 at 11:00:00AM +0100, Jules Bean wrote:
I saw it. In total, four messages from you in this thread.
I'm really sorry about that, but it was due to a problem and a
misunderstanding with the administrator of my STMP server: at first it
appeared the server was dropping my mail,
On Fri, Sep 21, 2007 at 09:08:13AM +0200, Andrea Rossato wrote:
To make a short story long, I needed some client for the Audacious
media player, something I could use to remote control it and, since
I'm addicted to Haskell, instead of surfing the web to find a suitable
client I surfed the web
On Fri, Sep 21, 2007 at 11:44:38AM +0200, Andrea Rossato wrote:
I apologize for the noise. The auto-replay is for documentation (who
knows, maybe others searching the list archives may find this info
useful).
I tried to send a couple of messages to inform that the API I was
writing a binding
On Fri, Sep 14, 2007 at 01:55:32AM +, Aaron Denney wrote:
On 2007-08-31, Andrea Rossato [EMAIL PROTECTED] wrote:
Thanks for your kind attention, but I don't think it's a matter of
buffering (I indeed tried playing with hSetBuffering with no results).
I'd like to convince you otherwise
Hi,
I think there's a huge flaw in the Haskell design: if you conceive
such a powerful and expressive programming language, one that empowers
even the most ignorant computer user to write complex applications,
instead of sticking to basic shell scripting - the only domain
graspable by such stupid
On Fri, Sep 21, 2007 at 09:08:13AM +0200, Andrea Rossato wrote:
Hi,
I think there's a huge flaw in the Haskell design:
I don't know if this is a feature, the fact that most of the times you
can find a solution to your problems by yourself, but only after
polluting the haskell-cafe mailing list
On Tue, Sep 18, 2007 at 09:20:44AM +0800, clisper wrote:
who knows how to compile yi-gtk?
i tried,but it told me mine miss gtk.
probably what you need is gtk2hs:
http://haskell.org/gtk2hs/
andrea
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On Thu, Sep 13, 2007 at 11:07:03AM +0200, Stephane Bortzmeyer wrote:
On Thu, Sep 13, 2007 at 12:23:33AM +,
Aaron Denney [EMAIL PROTECTED] wrote
a message of 76 lines which said:
the characters read and written should correspond to the native
environment notions and encodings.
Hi,
supposed that, in a Linux system, in an utf-8 locale, you create a file
with non ascii characters. For instance:
touch abèèè
Now, I would expect that the output of a shell command such as
ls ab*
would be a string/list of 5 chars. Instead I find it to be a list of 8
chars...;-)
That is to
On Wed, Sep 12, 2007 at 10:53:29AM -0400, Brandon S. Allbery KF8NH wrote:
That is expected. The low level filesystem storage doesn't know about
character sets, so non-ASCII filenames must be encoded in e.g. UTF-8. 8
characters is therefore correct, and you must do UTF-8 decoding on input
On Wed, Sep 12, 2007 at 11:16:25AM -0400, Seth Gordon wrote:
It appears that in spite of the locale definition, hGetContents is treating
each byte as a separate character without translating the multi-byte
sequences *from* UTF-8, and then putStrLn sends each of those bytes to
standard
On Wed, Sep 12, 2007 at 04:35:50PM +0200, Stephane Bortzmeyer wrote:
This is not an Haskell issue but a ls issue. use
System.Directory.getDirectoryContents and we'll see.
I get the very same output.
Thanks for you kind attention.
Andrea
___
On Wed, Sep 12, 2007 at 11:40:11AM -0400, Seth Gordon wrote:
The Unix utility od can be very helpful in figuring out problems like
this.
Thanks for pointing me to od, I didn't know it.
[*]At least on my computer, I get the same result *even if* I change LANG
from en_US.utf8 to C.
As
On Sat, Sep 01, 2007 at 09:12:30PM -0400, Albert Y. C. Lai wrote:
Andrea Rossato wrote:
loop s = do
putStrLn s
Most likely, the content of s sits in a local buffer and never leaves this
process, following most OS conventions and as others point out. Another
process
Hi,
I'm trying to acquire some confidence with the GHC-API and I'm having
some problems, related to error handling, I seem not be able to solve.
Basically there are 3 functions to (interactively) compile/run
Haskell expressions: compileExpr, dyCompileExpr and runStmt.
The first 2 will return
Hi,
there's something I don't get about interaction among OS processes and
Haskell handles/channels.
Suppose I have a very small program that takes a line and prints it
till you write quit:
main = do
s - getLine
case s of
quit - putStrLn quitting return ()
_ - loop s
where
Hi,
I'm going to be long, sorry for it. And probably also off topic, a bit
at least...;-)
I need a way to manage bibliographies, pretty common problem isn't it?
I used to use a wiki I developed also for such a task.[1] The wiki was
basically based on Bibtex.
I thought I could rewrite that
Hi,
I think this is just a stupid arrow question. Still I cannot find
where my mistake is located.
Suppose I have a simple xml document I want to process with HXT:
root
elem
sub /
risubtext/risub
/elem
/root
After extracting elem I want to duplicate the children trees with
the arrow
On Sat, Aug 11, 2007 at 11:50:19AM +0200, Andrea Rossato wrote:
Hi,
I think this is just a stupid arrow question. Still I cannot find
where my mistake is located.
well, it was not an arrow problem but a HXT problem. This new version
of tryMe2 does work as expected:
tryMe2 = runLA arrow
On Thu, Jul 26, 2007 at 10:25:06PM -0700, Dave Bayer wrote:
Ok, I'm writing a command line tool, using System.Console.GetOpt to handle
command line arguments. My Flags structure so far is
data Flag
= Filter String
| DateFormat String
| DocStart String
| DocEnd
this.
Sorry for such a long useless letter, but I've seen that the Haskell
community loves to talk about maintaining itself, and so on. I thought
that my 2 cents could be enjoyable too.
Regards,
Andrea Rossato
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On Wed, Jul 25, 2007 at 11:14:59AM +0100, Neil Mitchell wrote:
You know, changing a wiki page title means breaking all links to that
page from other sites. So, changing an old page title, means taking
that page off the Net.
Not if the redirect is done, certainly wikipedia does this.
I
On Wed, Jul 25, 2007 at 11:14:59AM +0100, Neil Mitchell wrote:
You know, changing a wiki page title means breaking all links to that
page from other sites. So, changing an old page title, means taking
that page off the Net.
Not if the redirect is done, certainly wikipedia does this.
On Tue, Jul 17, 2007 at 06:52:43PM +0400, Dmitri O.Kondratiev wrote:
I am trying to use Graphics.SOE (that was present at least in GHC 6.4) to
go through Simple Graphics examples as described in Pail Hudak book The
Haskell School of Expression. Learning functional programming through
On Wed, Jul 18, 2007 at 03:58:58PM +0400, Dmitri O.Kondratiev wrote:
Andrea thanks!
I tried to install HGL on Win32 and got this unresolved dependency:
HGL-3.1runghc Setup.hs configure
Configuring HGL-3.1...
configure: Dependency base-any: using base-2.1.1
Setup.hs: cannot satisfy
On Sat, Jul 14, 2007 at 11:24:36AM +0800, Michael T. Richter wrote:
I've seen this pattern so often in communities. I've also seen it in
management (the supervisor/manager who can do the job better than his
underlings -- so he does) or in teaching (the popular teacher gets a
heavier
On Sun, Jul 15, 2007 at 07:05:53PM +1000, Donald Bruce Stewart wrote:
So how would you think we can approve? We have to help in more specific
ways, and listen more carefully to what people are asking?
I usually do this when I want a newcomer to join my community (for
instance my research
On Fri, Jul 13, 2007 at 09:24:48PM -0700, brad clawsie wrote:
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Finance-Quote-Yahoo-0.1
this is a simple module to get stock quote information from yahoo
finance, considered alpha quality
Hi,
cool! I wanted to use it to write a small
On Sat, Jul 14, 2007 at 10:20:56AM +0200, Andrea Rossato wrote:
On Fri, Jul 13, 2007 at 09:24:48PM -0700, brad clawsie wrote:
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Finance-Quote-Yahoo-0.1
this is a simple module to get stock quote information from yahoo
finance
On Sat, Jul 14, 2007 at 08:20:04AM -0700, brad clawsie wrote:
i'm not sure i understand - you want to rewrite these functions that
are already implemented in Data.String? why? this is why hackage exists -
so you don't have to rewrite these functions.
MissingH is well maintained by an
On Mon, Jul 09, 2007 at 09:41:32PM +0100, Claus Reinke wrote:
hiding concrete types in existentials sometimes only defers problems
instead of solving them, but exposing class interfaces instead of types is a
useful way to mitigate that effect. it just so happens that this particular
On Fri, Jul 13, 2007 at 12:11:58PM +1000, Donald Bruce Stewart wrote:
As we sit here riding the Haskell wave:
http://www.cse.unsw.edu.au/~dons/tmp/cafe.png
[..]
That is, to help people progress from newbie, to intermediate, to
expert, and thus ensure the culture is maintained (avoiding
On Wed, Jun 27, 2007 at 05:07:54PM -0500, Jon Cast wrote:
I discovered this trick the other day, and didn't remember seeing it anywhere
as a cond implementation:
head $
[ e1 | cond1 ] ++
[ e2 | cond2 ] ++
[ e3 | cond3 ]
Cool!
Thanks for sharing it.
All the best,
andrea
On Tue, Jun 26, 2007 at 07:54:26AM -0500, Maxim Khailo wrote:
You have just combined two of my favorite languages!
Gracjan Polak wrote:
Hi all,
I'm pleased to announce the first public release of Scripting.Lua.
I quote: this is a really nice news. I'll be trying to use it in
project of
On Fri, Jun 22, 2007 at 03:32:19PM +0200, Daniel Fischer wrote:
Am Freitag, 22. Juni 2007 04:29 schrieb Donald Bruce Stewart:
The file system was down here, sorry. Should be up now.
Ah, just unlucky timing.
darcs got, installed, all well.
I Know I'm probably late, but with the darcs
Hi,
after many test I found out that System.Process.runInteractiveProcess
leaks memory while runInteractiveCommand does.
The issue of memory leaks related to running external program was
raised here:
http://www.haskell.org/pipermail/haskell-cafe/2007-June/027234.html
and Bryan noted that after a
Hello,
I have this very simple program that executes an external program,
reads its output and prints it (the program is date).
The readings is done with pipes.
The problem is that memory usage constantly increases over time.
Profiling does not show garbage collection of any sort.
File
On Thu, Jun 21, 2007 at 08:18:23AM -0400, Brandon S. Allbery KF8NH wrote:
On Jun 21, 2007, at 6:40 , Andrea Rossato wrote:
I have this very simple program that executes an external program,
reads its output and prints it (the program is date).
The readings is done with pipes
On Thu, Jun 21, 2007 at 09:19:51PM +0100, Andrew Coppin wrote:
OK, a few questions...
1. Is there *any* way to determine how large a file is *without* opening it?
The only library function I can find to do with file sizes is hFileSize;
obviously this only works for files that you have
On Thu, Jun 21, 2007 at 09:38:49PM +0100, Andrew Coppin wrote:
Andrea Rossato wrote:
On Thu, Jun 21, 2007 at 09:19:51PM +0100, Andrew Coppin wrote:
2. Is there any way to discover Windoze-style attributes for files?
The module before, if I understand correctlu.
No, AFAIK
On Thu, Jun 21, 2007 at 01:36:16PM -0700, Bryan O'Sullivan wrote:
Andrea Rossato wrote:
Still I do not understand you reference to the leak problem. Could you
please elaborate a bit?
The runProcess function returns a ProcessHandle. If you don't call
waitForProcess on that handle
Hi,
I'm trying, without success, to create a window with the attribute
override_redirect set to True (this way the window manager should not
take care of it). Obviously with Xlib (X11-1.2.2).
No meter how I try I seem not to be able to get there.
In test1 I try with the correct method
On Sat, Jun 16, 2007 at 07:03:24PM +0200, Andrea Rossato wrote:
Hi,
I'm trying, without success, to create a window with the attribute
override_redirect set to True (this way the window manager should not
take care of it). Obviously with Xlib (X11-1.2.2).
just for the sake of documentation
On Sat, Jun 16, 2007 at 11:39:51PM +0200, Andrea Rossato wrote:
On Sat, Jun 16, 2007 at 07:03:24PM +0200, Andrea Rossato wrote:
Hi,
I'm trying, without success, to create a window with the attribute
override_redirect set to True (this way the window manager should not
take care
On Mon, Oct 30, 2006 at 09:54:08AM +0100, Ketil Malde wrote:
How to make cabal projects into distribution-specific (.deb, .rpm, and
so on) packages?
for slackware you can have a look to this slackBuild script:
http://gorgias.mine.nu/repos/slackBuild/hxt/hxt/hxt.SlackBuild
regards,
andrea
Hello!
On Sun, Oct 22, 2006 at 12:27:05AM +0400, Bulat Ziganshin wrote:
as Udo said, it should be better to evaluate thunks just when they are
created, by using proper 'seq' calls.
While I understand why you and Udo are right, still it is difficult
for me to related this discussion to my code.
Hello Bullat,
first of all, thanks for your lengthy and clear explanation.
On Sun, Oct 22, 2006 at 04:08:49PM +0400, Bulat Ziganshin wrote:
f a b = let x = a*b
y = a+b
in x `seq` y `seq` (x,y)
this f definition will not evaluate x and y automatically. BUT its
returned
Hallo Bulat!
On Fri, Oct 20, 2006 at 10:21:51PM +0400, Bulat Ziganshin wrote:
first, GC don't occurs automatically when you close file. you can help
GHC by using performGC from System.Mem. i does it in my own prog
I did not get an appreciable improvement with performGC, as you can
see from
Hallo!
Thanks a lot for stopping by.
On Sat, Oct 21, 2006 at 06:41:32PM +0200, Udo Stenzel wrote:
The correct solution however, is the application of 'seq' at the right
places. To understand where these are, perform a simulation of
Haskell's reduction strategy on paper.
I will definitely
On Sat, Oct 21, 2006 at 09:09:13PM +0200, Andrea Rossato wrote:
So, it's parsec, on your side...;-)
I sorry, I was a bit confused when I wrote that.
I confused you for another person, obviously.
Sorry about that. Andrea
pgpx3F8PsFdVW.pgp
Description: PGP signature
On Thu, Oct 19, 2006 at 06:23:35PM +0400, Bulat Ziganshin wrote:
Hello Andrea,
Wednesday, October 18, 2006, 9:34:28 PM, you wrote:
solution? Or just some hints on the kind of problem I'm facing: is it
related to strictness/laziness, or it's just that I did not understand
a single bit
Hi!
I'm a newbie and, as a learning experience, I'm writing a feed reader
with hscurses and hxt. For the present time the feed reader just reads
a Liferea cache but, as you can imagine, I'm running into the usual
newbie problems of memory consumption and garbage collection, probably
(I'm not
Hello!
I've been trying for quite some time to find an elegant solution to
cut long strings into lines, but the only solution I was able to come
up is the following piece of ugly code.
Is there a library function for that? What kind of approach would you
suggest?
Thanks for your kind attention.
On Sat, Sep 30, 2006 at 08:56:24PM +0400, Bulat Ziganshin wrote:
i think that your algorithm is too complex. standard algorithm, imho,
is to find last space before 80 (or 75) chars margin, split here and
then repeat this procedure again. so, one line split may look like
splitAt . last .
On Sat, Sep 30, 2006 at 08:56:24PM +0400, Bulat Ziganshin wrote:
splitByLen len_f [] = []
splitByLen len_f xs = y : splitByLen len_f ys
where (y,ys) = splitAt (len_f xs) xs
...
so, splitByLen len_f should give you that you need, you need only to
add checks for some
On Wed, Sep 20, 2006 at 01:31:22AM -0700, Carajillu wrote:
I'm trying to write in Haskell a function that in Java would be something
like this:
char find_match (char[] l1, char[] l2, char e){
//l1 and l2 are not empty
int i = 0;
while (l2){
char aux =
On Wed, Sep 20, 2006 at 01:31:22AM -0700, Carajillu wrote:
compare function just compares the two lists and return true if they are
equal, or false if they are not.
it is really a simple function, but I've been thinking about it a lot of
time and I can't get the goal.
I forgot, obviously,
On Wed, Sep 20, 2006 at 07:20:23PM +1000, Donald Bruce Stewart wrote:
comp l1 l2 = if l1 == l2 then True else False
You never stop learning!
andrea
which you would just write as:
comp = (==)
and then you'd just use == anyway :)
this is why I came to love haskell: it remembers
On Mon, Sep 18, 2006 at 02:51:34AM -0700, Carajillu wrote:
Hi, I'm a student and I have to do a program with Haskell. This is the first
time I use this languaje, and I'm having problems with the indentation. I
want to check if this function is correct, but when I try to make the GHCi
On Mon, Sep 18, 2006 at 12:54:34PM +0200, Albert Crespi wrote:
Thank you very much for your reply!
As I said, it is my first experience with Haskell, I have been programming
in Java and C for some years, and I find this language very different from
them. Anyway I'll try to fix the function
On Mon, Sep 18, 2006 at 04:16:55AM -0700, Carajillu wrote:
Wow! I'm starting to love this languaje, and the people who uses it!:)
You spoke too early. My code had a bug, a huge one...
this is the right one:
-- Replaces a wildcard in a list with the list given as the third argument
On Mon, Sep 18, 2006 at 12:25:21PM +0100, Neil Mitchell wrote:
Why not:
check_elem (x:xs) = if x == e then (l2 ++ xs) else x : check_elem xs
Thanks
Thank you!
Lists are my personal nightmare...;-)
Andrea
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On Mon, Sep 18, 2006 at 12:42:59PM +0100, Jón Fairbairn wrote:
And if you do that, you can write it like this:
subst e l'
= concat . map subst_elem
where subst_elem x
| x == e = l'
| otherwise = [x]
Pretty. Just to many keystrokes.
On Mon, Sep 18, 2006 at 05:42:47AM -0700, Carajillu wrote:
Not a good solution, it just substitutes the first occurrence of the item in
the list. I'll try the others
I did not get this point.
You must take Jón's approach with map.
andrea
___
On Mon, Sep 18, 2006 at 02:52:45PM +0200, Andrea Rossato wrote:
On Mon, Sep 18, 2006 at 05:42:47AM -0700, Carajillu wrote:
Not a good solution, it just substitutes the first occurrence of the item in
the list. I'll try the others
I did not get this point.
You must take Jón's approach
On Mon, Sep 18, 2006 at 05:35:47AM -0700, Carajillu wrote:
I'm testing it and it's working really well. The other solutions are a
little complicated for me, but I'm still trying to undestand them.
Jón's approach (the last version of his message), usually cleaner and
more concise, is called
On Mon, Sep 18, 2006 at 04:52:33PM +0400, Bulat Ziganshin wrote:
but the goal is not keystrokes itself but easy of understanding. for
me, first solution looks rather idiomatic and intuitively
understandable. second solution requires more time to got it, but
seems easier for novices that are
On Mon, Sep 18, 2006 at 11:04:27AM -0400, Lennart Augustsson wrote:
Or even shorter:
subst e l = concatMap $ \x-if x==e then l else [x]
I kinda like the list comprehension version too
subst e l1 l2 = [ r | x - l2, r - if x==e then l1 else [x] ]
This is the version I first wanted to (try
Hello!
I'm trying to learn parsing and parser combinations in Haskell, using,
as usual, Wadler's Monads in Functional Programming as my text book.
Everything works fine except for a small but annoying problem related
to read. I'm sure it must be something easy, some kind of stupid
faq. Still I'm
Il Tue, Sep 12, 2006 at 08:05:42AM -0400, Sara Kenedy ebbe a scrivere:
Hello all,
update :: String - String
update sss = ...
main = do writeFile myFile.txt sss
x - callSystem myFile.txt
y - openFile result.txt ReadMode
zzz - hGetContents y
Il Tue, Sep 12, 2006 at 09:00:19AM -0400, Sara Kenedy ebbe a scrivere:
Hello,
Maybe what I talk is not clear.
I want to take the input string sss of update to use in: writeFile
myFile.txt sss of function main and get the value zzz from main
to assign for the value return of update. I
Hello!
Since there seems to be very little support for haskell in Slackware
Linux, I'm putting together a repository with the most useful (for me)
hasekll utilities.
For the time being there are:
1. ghc-6.4.2 (precompiled binaries packaged for slackware)
2. haddock
3. darsc
4. hscurses
5.
Il Mon, Sep 11, 2006 at 11:30:41AM +0200, Udo Stenzel ebbe a scrivere:
Whatever it is, I cannot reproduce any of your problems. I installed
HaXml-1.13.2 from source using Cabal, and both ghc -c Xml.hs and ghc
--make xml.hs work as expected, even without the -package switch. This
is GHC 6.4.1
Il Sat, Sep 09, 2006 at 05:20:55PM -0400, Mark T.B. Carroll ebbe a scrivere:
FWIW I have the same problem - I can't use HaXml with ghci.
So it's not just you. (-:
Indeed!
So I found my first bug in ghc... And now I'll dig into ghc bug
reports to see if someone is working on the problem...
Il Sat, Sep 09, 2006 at 04:34:04AM +0100, Marco André F. de Almeida ebbe a
scrivere:
I know this will not solve your problem, but just so that you
know that with Hugs, you code works without any problems.
If you don't want/need to compile the program, I guess one interpreter
(Hugs) is as good
Il Sun, Sep 10, 2006 at 11:41:45AM +0200, Lemmih ebbe a scrivere:
It looks a bit like 'HaXml' has been updated after 'hxml' was built.
Try rebuilding 'hxml' against the 'HaXml' you've got installed.
No, I installed the together, HaXml first and then hxml
In hxml there where a couple of bugs,
Il Sun, Sep 10, 2006 at 01:56:25PM +0200, Udo Stenzel ebbe a scrivere:
Hrm, you're accessing a symbol presumably found in a library that isn't
loaded. Either GHC cannot find the library, which shouldn't happen if
you're using the right package switch, or the .hi file you compiled
against is
Il Sat, Sep 09, 2006 at 02:17:36PM +0200, Andrea Rossato ebbe a scrivere:
probably it's me, but I cannot understand what I'm doing wrong.
Thanks to the discussion of this thread I was able to (sort of)
isolate the problem and understand why I cannot get hxml (if linked
with HaXml) to work
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