David Menendez [EMAIL PROTECTED] writes:
Someone in a previous thread made an analogy between GHC and the linux
kernel. I imagine that third-party Haskell distributions, consisting
of GHC/Hugs/whatever and some bundled packages, would meet the desire
for a batteries included Haskell
worksFine =
if True
then putStrLn True
else putStrLn False
worksNOT = do
if True
then putStrLn True
else putStrLn False
worksAgain = do
if True
then putStrLn True
else putStrLn False
Of course the worksFine function returns an IO action, so has different
behavior, but I mean the
On Thu, 2007-11-22 at 09:19 +0100, Peter Verswyvelen wrote:
worksFine =
if True
then putStrLn True
else putStrLn False
worksNOT = do
if True
then putStrLn True
else putStrLn False
worksAgain = do
if True
then putStrLn True
else putStrLn False
Of course the
Hi,
Is there any plugin system for haskell? For example, in Java, I can
load all compiled classes from given directory, check their interfaces
and run some methods through reflection etc. Is it possible in
haskell, to load modules from given directory, and if in module there
is instance of class
On Nov 22, 2007 8:19 AM, Peter Verswyvelen [EMAIL PROTECTED] wrote:
worksFine =
if True
then putStrLn True
else putStrLn False
This is just an expression, the indentation is inconsequential.
worksNOT = do
if True
then putStrLn True
else putStrLn False
The first line,
Duncan Coutts [EMAIL PROTECTED] writes:
I did a quick popularity count by wget'ting the whole thing, and
looking for hrefs under cgi-bin/packages/archive¹.
That's quite fascinating. Thanks. You've convinced me we should add
something like that :-).
Note that that was only a direct count, I
Ketil Malde wrote:
David Menendez [EMAIL PROTECTED] writes:
Someone in a previous thread made an analogy between GHC and the linux
kernel. I imagine that third-party Haskell distributions, consisting
of GHC/Hugs/whatever and some bundled packages, would meet the desire
for a batteries included
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Radoslaw Grzanka
Hi,
Is there any plugin system for haskell? For example, in Java, I can
load all compiled classes from given directory, check their interfaces
and run some methods through reflection etc. Is it possible in
Don Stewart dons at galois.com writes:
ByteStrings have all the same operations as lists though, so you can
index, compare and take substrings, with the benefit that he underlying
string will be shared, not copied. And only use 1 byte per element.
Is there any parser built directly over
Hello Andrew,
Wednesday, November 21, 2007, 9:26:45 PM, you wrote:
It seems that the [Haskell] GLUT package isn't installed.
at least i remember my own proposal to remove from GHC distribution
graphics packages - because they are fat, rarely used and mostly outdated
Hackage. ;-) But, alas,
snip
Many other programming languages have packaging strategies that sound
very similar. Several of them have managed to have a negative impact on
platforms that already have good packaging technologies (i.e. almost
every platform apart from Windows ;-). I'd hate to see Haskell go in a
Hi,
Thanks for answer.
There are two libs that I'm aware of.
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/plugins-1.0
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/metaplug-0.1.
1
Unfortunatly former needs gcc, latter does not compile . I will have
to install
IMHO, no one in the right mind uses Windows voluntarily. :)
I'm forced to use it at work, and it's a pain. But since many are forced to
use Windows it would be nice if ghc was as well supported on Windows and
Unix.
On Nov 22, 2007 12:11 AM, Aaron Denney [EMAIL PROTECTED] wrote:
On 2007-11-21,
Peter Verswyvelen wrote:
No GLUT is not bundled with GHC 6.8.1 anymore. Yes, that is weird.
I think it's weird too, so I bug reported it:
http://hackage.haskell.org/trac/ghc/ticket/1917
Jules
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On Thu, 22 Nov 2007, Peter Verswyvelen wrote:
worksFine =
if True
then putStrLn True
else putStrLn False
worksNOT = do
if True
then putStrLn True
else putStrLn False
worksAgain = do
if True
then putStrLn True
else putStrLn False
Of course the worksFine
Hello Peter,
Thursday, November 22, 2007, 11:19:20 AM, you wrote:
Of course the worksFine function returns an IO action, so has
different behavior, but I mean the indentation is different. Is this by
design?
to be exact, Haskell procedure is just a function returning an
action. i recommend
Hello Thomas,
Wednesday, November 21, 2007, 6:30:17 PM, you wrote:
zoho writer: online, not xml editor, but at least able to export into
pdf/html/doc/..
It's not open source + it doesn't do what we need - Bang! \also they
host stuff for you, and only have limited room for free usage.
Gracjan Polak gracjanpolak at gmail.com writes:
Don Stewart dons at galois.com writes:
ByteStrings have all the same operations as lists though, so you can
index, compare and take substrings, with the benefit that he underlying
string will be shared, not copied. And only use 1 byte
Hello Radoslaw,
Thursday, November 22, 2007, 11:34:56 AM, you wrote:
Is there any plugin system for haskell? For example, in Java, I can
there is also ghc-as-a-library
shortly said, ghc doesn't have dynamic abilities, so providing
features you need without compiling the whole program on the
Is there any plugin system for haskell? For example, in Java, I can
load all compiled classes from given directory, check their interfaces
and run some methods through reflection etc. Is it possible in
haskell, to load modules from given directory, and if in module there
is instance of class
2007/11/22, Claus Reinke [EMAIL PROTECTED]:
Is there any plugin system for haskell? For example, in Java, I can
load all compiled classes from given directory, check their interfaces
and run some methods through reflection etc. Is it possible in
haskell, to load modules from given
I was reading the 'Problems with do notation' thread and Thomas
Schilling suggested reading about mdo. Not knowing mdo I thought
that sounds interesting and went to
http://haskell.org/
which redirects you to
http://haskell.org/haskellwiki/Haskell
and gives you a search box. Typing mdo and
On 22/11/2007, Richard Kelsall [EMAIL PROTECTED] wrote:
Did I do something wrong when searching haskell.org?
You didn't use Google first? ;-)
Seriously though, using the search box at haskell.org seems to be a
dead loss. I'm sure this has come up in the past.
D.
--
Dougal Stanton
[EMAIL
Hi All
Richard Kelsall wrote:
I was reading the 'Problems with do notation' thread and Thomas
Schilling suggested reading about mdo. Not knowing mdo I thought
that sounds interesting and went to
http://haskell.org/
which redirects you to
http://haskell.org/haskellwiki/Haskell
and
Bayley, Alistair-2 wrote:
There are two libs that I'm aware of.
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/plugins-1.0
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/metaplug-0.1.
1
There is also
Thomas Schilling wrote:
On Thu, 2007-11-22 at 13:23 +, Richard Kelsall wrote:
I was reading the 'Problems with do notation' thread and Thomas
Schilling suggested reading about mdo. Not knowing mdo I thought
that sounds interesting and went to
Gah, I was too lazy to add the proper
I am also happy to hear this. When will the new version be released?
Thanks,
Bit
On Nov 21, 2007 7:11 PM, Paul L [EMAIL PROTECTED] wrote:
Just to echo back to the question whether Yampa/AFRP is still being
developed, the answer is YES. We are working on an updated version at
Yale.
But
Mads Lindstrøm wrote:
...
Did I do something wrong when searching haskell.org?
Properly not. I think the problem is that haskell.org do not index
words, that have length = 3. MediaWiki (which I think haskell.org uses)
do not by default index short words (length = 3 or length = 4 - can't
Hi,
How can I call a program (like, for instance,
'grep text *') and get the standard output?
All actions I found (executeFile, system) do
not give me the output of the program.
Thanks,
Maurício
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On Nov 21, 2007 5:00 PM, Peter Verswyvelen [EMAIL PROTECTED] wrote:
Last time I checked the SDL binding did not work properly on Windows when
using GHCi.
The next version of hsSDL (current darcs) has documentation that
explains how to get ghci working.
The trick is to make copies of the
Maurício wrote:
Hi,
How can I call a program (like, for instance,
'grep text *') and get the standard output?
All actions I found (executeFile, system) do
not give me the output of the program.
http://haskell.org/ghc/docs/latest/html/libraries/process-1.0.0.0/System-Process.html
the standard way to do that is use an existential wrapper:
(This needs -fglasgow-exts or some flags)
module Main where
class Interface x where
withName :: x - String
data A = A String
instance Interface A where
withName (A string) = Interface A with ++ string ++
data B = B
ChrisK [EMAIL PROTECTED] wrote:
the standard way to do that is use an existential wrapper:
Does this relate to the basket of fruit problem in object
oriented languages?
You created the existential wrapper to allow a multimorphic
list type?
--
_jsn
Hi,
If I have two computations a-IO b
and b-IO c, can I join them to
get an a-IO c computation? I imagine
something like a liftM dot operator.
Thanks,
Maurício
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On 22 Nov 2007, at 10:17 AM, Maurí cio wrote:
Hi,
If I have two computations a-IO b
and b-IO c, can I join them to
get an a-IO c computation? I imagine
something like a liftM dot operator.
This is called Kleisli composition, by the way; it's defined as (=)
in Control.Monad.
jcc
On Thu, 2007-11-22 at 01:01 -0500, Dimitry Golubovsky wrote:
Hi,
I finally was able to write a function which grabs the remainder of
the computation in Cont monad and passes it to some function, in the
same time forcing the whole computation to finish by returning a final
value.
I am not
Jules Bean wrote:
Maurício wrote:
Hi,
How can I call a program (like, for instance,
'grep text *') and get the standard output?
All actions I found (executeFile, system) do
not give me the output of the program.
Lennart Augustsson wrote:
IMHO, no one in the right mind uses Windows voluntarily. :)
I'm forced to use it at work, and it's a pain. But since many are
forced to use Windows it would be nice if ghc was as well supported on
Windows and Unix.
What he said. ;-)
I will say this: GHC itself
Brandon S. Allbery KF8NH wrote:
On Nov 21, 2007, at 19:57 , Galchin Vasili wrote:
Hi Ian,
I am trying to dump out all function signatures exported from
System.Directory. I just tried
inside ghci: :! ghc --show-iface System.Directory. This is getting
closer ... thank you! However, now
On Nov 22, 2007, at 13:17 , Maurí cio wrote:
If I have two computations a-IO b
and b-IO c, can I join them to
get an a-IO c computation? I imagine
something like a liftM dot operator.
If you have GHC 6.8.1, this is the Kleisli composition operator (=)
in Control.Monad. (There is also (=)
Jason Dusek wrote:
ChrisK [EMAIL PROTECTED] wrote:
the standard way to do that is use an existential wrapper:
Does this relate to the basket of fruit problem in object
oriented languages?
You created the existential wrapper to allow a multimorphic
list type?
When you access the
Bit Connor wrote:
Hello Andrew,
...yep, configure fails because it can't find sh. (Again.)
This error can safely be ignored on windows.
Apparently so. (A bit confusing then, no?)
I'm rather loathed to install a Unix emulator just so I can install
things from Hackage.
Brandon S. Allbery KF8NH wrote:
On Nov 22, 2007, at 14:25 , Andrew Coppin wrote:
It's just installing anything from Hackage which turns out to be
really difficult. I understand Windows developers are a tad rare
round here, so maybe that's understandable. I'd certainly be
interested in
On 22 Nov 2007, at 11:16 AM, Andrew Coppin wrote:
Aaron Denney wrote:
On 2007-11-21, Andrew Coppin [EMAIL PROTECTED] wrote:
In short, lots of Haskell-related things seem to be extremely
Unix-centric and downright unfriendly towards anybody trying to set
things up on Windows. If I didn't
Bulat Ziganshin wrote:
Hello Andrew,
Wednesday, November 21, 2007, 9:26:45 PM, you wrote:
Hackage. ;-) But, alas, no. That doesn't work either. The reason? Well,
apparently Cabal can't find sh.
cabal by itself doesn't need sh. it's either required by library
installation or it as
Aaron Denney wrote:
On 2007-11-21, Andrew Coppin [EMAIL PROTECTED] wrote:
In short, lots of Haskell-related things seem to be extremely
Unix-centric and downright unfriendly towards anybody trying to set
things up on Windows. If I didn't already know a bit about Unix, I'd
be *really* stuck!
On Nov 22, 2007, at 14:25 , Andrew Coppin wrote:
It's just installing anything from Hackage which turns out to be
really difficult. I understand Windows developers are a tad rare
round here, so maybe that's understandable. I'd certainly be
interested in hearing about anything practical
Claus Reinke wrote:
I hope this is understandable what I'm trying to achieve here.
not really: the only classes in haskell are type classes, and
if there is any class instance missing at compile time, you
won't even get to runtime, so you don't have to worry
about loading instances at
On Nov 22, 2007, at 14:22 , Andrew Coppin wrote:
My first question would be:
- Is there a viable alternative to sh scripts for installing packages?
If there is, it would seem it's just an issue of getting everybody
to migrate to it. If there isn't, it looks like we need to make one...
I'm not 100% sure, but I think hsplugins can dynamically load compiled
*.o files in this way.
Correct.
Not sure whether this requires the person running
the main program to have GHC installed though.
Yes, it does.
Thanks ciao,
Leif
Unlike Java, there's no reflection capabilities. This
On Nov 22, 2007 1:22 PM, Jonathan Cast [EMAIL PROTECTED] wrote:
On 22 Nov 2007, at 10:17 AM, Maurí cio wrote:
Hi,
If I have two computations a-IO b
and b-IO c, can I join them to
get an a-IO c computation? I imagine
something like a liftM dot operator.
This is called Kleisli
Hi all,
The documentation of Visual Haskell mentions that the source code is
available under a BSD license. The code is not available from the
download page (http://www.haskell.org/visualhaskell/downloads.html).
Does anone know where to get it?
___
On Nov 22, 2007 9:39 PM, Andrew Coppin [EMAIL PROTECTED] wrote:
Editing the cabal config file is necessary so that the SDL include
files and libs can be found.
...because Windows uses DLLs instead of [whatever it is that Unix does]?
The reason is that on Unix, there are standard location
Hi Andrew,
Andrew Coppin wrote:
In general, I find *most* search functions to be fairly unhelpful.
Google is the shining exception to this rule; it almost always seems to
figure out what you're after.
I guess doing text searching is just a fundamentally difficult problem,
and the guys at
Hello Haskell-Cafe,
i write a file-processing utility and want to allow users open URLs
like the usual files. for this, i need a library with minimum the
following http functionality:
getFileSize url
readBuf url bufPtr offset size
ideally, it should also support ftp and allow to create ftp
Additionally, I find this to be helpful for keeping out trailing
whitespace:
;; Highlight trailing whitespace in haskell files
(add-hook 'haskell-mode-hook
'(lambda ()
(setq show-trailing-whitespace t)))
Cheers,
-Greg Heartsfield
On Fri, Nov 16, 2007 at 06:14:57PM +0200,
if you need comprehensive support of http and ftp in one api/library, as
far as i know, the curl bindings are your only choice
related...i promised a while back to support packaging and
documentation of the curl bindings. this work is now delayed until
freebsd 7 gains haskell support (due to
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