Still struggling after almost year (I learn it along with Prolog, Lua, and
many other non-C family languages), because I'm not very good at "describing
solutions". My imperative background is quite strong, but I've been able to
switch more easily these days (after taking Functional Programming cla
I second that! Haskell is a very fun and engaging language (with its
accompanying corpus of theorems, and its great community)...
My timing is a little bit longer than Rick's... I've been eyeing
Haskell for about 8 months, reading books, poking around etc. I've
started to feel comfortable
I've been messing with Haskell since the Middle of January on evenings and
weekends. Just now I'm getting to the point where I can construct nontrivial
programs with little help from #haskell.
It is by no means my most proficient language, I've been coding C++ and
other languages for over 10 year
How long did it take you to become proficient in Haskell? By that, I mean -
how long until you were just as comfortable with Haskell as you were with
your strongest language at that time?
--
View this message in context:
http://www.nabble.com/Learning-Haskell-tp22673552p22673552.html
Sent from t
Xiao-Yong Jin wrote:
Hi,
I just feel it is not comfortable to deal with exceptions
only within IO monad, so I defined
tryArith :: a -> Either ArithException a
tryArith = unsafePerformIO . try . evaluate
[...]
However, I guess unsafePerformIO definitely has a reason for
its name. As I read t
On Mon, 23 Mar 2009, Xiao-Yong Jin wrote:
Hi,
I just feel it is not comfortable to deal with exceptions
only within IO monad, so I defined
tryArith :: a -> Either ArithException a
tryArith = unsafePerformIO . try . evaluate
and it works quite good as
map (tryArith . (div 5)) [2,1,0,5]
Hi.
I have implemented a generalized shuffle function, for the
random-shuffle package
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/random-shuffle
I have not yet commited the change, before that I would like to receive
some feedbacks (especially by the original author of the shuf
This is solely the reason for my interest in JHC.
The agreement doesn't specifically prohibit the use of interpreters (just
those than run external code). It also doesn't say anything about machine
generated code. The only thing one would have to ensure is that the
dependencies of JHC are all comp
You don't need to derive ToSElem -- you get the instance for free if
you derive Data. Import GenericWithClass to get the instance for Data
from syb-with-class, and import GenericStandard for use with Data from
the vanilla syb that comes with GHC.
Cheers,
Sterl.
2009/3/23 Kemps-Benedix Torsten :
>
On Mon, Mar 23, 2009 at 04:41:04PM -0400, Braden Shepherdson wrote:
> The good news is that jhc's portable C code works perfectly well -- but
> of course that is simply running precompiled Haskell apps and not a
> compiler or interpreter running on the device. Since jhc is not
> self-hosting
On 23 Mar 2009, at 2:20 am, Anonymous Anonymous wrote:
Hello,
I'm new to haskell, I'm wondering how can you write a function that
will do the following:
fromIntToString :: Int -> String
this is a cast function to cast an Int to a String.
It cannot be. What could it possibly mean to "ca
Guess they ended up making an exception for Flash, finally. Will be interesting
to see how they prevent 3rd party stores from running arbitrary Flash games and
whatnot. Maybe they'll blacklist any popular sites that are stealing
marketshare from the AppStore?
-Michael
-Original Message
http://www.readwriteweb.com/archives/confirmed_apple_and_adobe_coll.php
On 23 Mar 2009, at 23:29, Michael Giagnocavo wrote:
Doesn’t Apple Store restrict applications (by policy) so they cannot
generate or execute arbitrary code? (That’s the reason there’s no
Flash for iPhone.) That restricti
Miguel Mitrofanov wrote:
3) Personally, I'd love to see ghc on iPhone. It could even persuade me
to upgrade.
See the GHC-on-ARM page[1] for my work on it last summer, among others'.
GHC is tough to port because bootstrapping to new architectures has been
broken for a long time, since soon aft
Doesn't Apple Store restrict applications (by policy) so they cannot generate
or execute arbitrary code? (That's the reason there's no Flash for iPhone.)
That restriction seems like it'd block any interpreter or compiler from being
sold, no?
-Michael
From: haskell-cafe-boun...@haskell.org
[ma
Csaba Hruska wrote:
> > I _think_ example1 is killed by SIGABRT, but I could be wrong, I've
> > never seen this before. Anyway, it's a strange thing.
> >
> Does the program exit immediatly after the first rendered frame?
>
Usually yes, sometimes I'm seeing the ogre being rotated before
SIGABRT.
2009/3/23 Achim Schneider
> Csaba Hruska wrote:
>
> > svn checkout
> > *http*://lambdacube.googlecode.com/svn/trunk/lambdacube-read-only
> >
> I think you mean
> svn co http://lambdacube.googlecode.com/svn/trunk
>
> I didn't do anything yet, except running the sample program. I get to
> see an o
Csaba Hruska wrote:
> svn checkout
> *http*://lambdacube.googlecode.com/svn/trunk/lambdacube-read-only
>
I think you mean
svn co http://lambdacube.googlecode.com/svn/trunk
I didn't do anything yet, except running the sample program. I get to
see an ogre head and this:
8<
k...@solaris trun
On Mon, Mar 23, 2009 at 11:53 AM, John Van Enk wrote:
> I think he means a program running on the iPhone which allows you to open a
> terminal over an SSH session to other devices. The instance (I think) you're
> thinking of is where the SSH *server* runs on the iPhone.
Yeah I was talking about
On Mon, Mar 23, 2009 at 11:46 AM, Miguel Mitrofanov
wrote:
>
> On 23 Mar 2009, at 21:38, David Leimbach wrote:
>
>
>>
>> On Mon, Mar 23, 2009 at 11:22 AM, Miguel Mitrofanov <
>> miguelim...@yandex.ru> wrote:
>> 1) You'll need a terminal application first, and I'm not sure if there is
>> one in App
* Csaba Hruska [2009-03-23 19:24:19+0100]
> Hi!
>
> I've created a ticket for this idea:
> http://hackage.haskell.org/trac/summer-of-code/ticket/1572
> Please write your opinion.
>
> I also put the source code here:
> http://code.google.com/p/lambdacube/
>
> svn checkout *http*://lambdacube.goo
I think he means a program running on the iPhone which allows you to open a
terminal over an SSH session to other devices. The instance (I think) you're
thinking of is where the SSH *server* runs on the iPhone.
On Mon, Mar 23, 2009 at 2:46 PM, Miguel Mitrofanov wrote:
>
> On 23 Mar 2009, at 21:38
On 23 Mar 2009, at 21:38, David Leimbach wrote:
On Mon, Mar 23, 2009 at 11:22 AM, Miguel Mitrofanov > wrote:
1) You'll need a terminal application first, and I'm not sure if
there is one in AppStore. In fact, I AM sure there isn't.
There's SSH terminal programs like Putty based stuff that
On Mon, Mar 23, 2009 at 11:22 AM, Miguel Mitrofanov
wrote:
> 1) You'll need a terminal application first, and I'm not sure if there is
> one in AppStore. In fact, I AM sure there isn't.
There's SSH terminal programs like Putty based stuff that are in the
AppStore. So that sort of thing has been
Hi!
I've created a ticket for this idea:
http://hackage.haskell.org/trac/summer-of-code/ticket/1572
Please write your opinion.
I also put the source code here:
http://code.google.com/p/lambdacube/
svn checkout *http*://lambdacube.googlecode.com/svn/trunk/lambdacube-read-only
Cheers,
Csaba Hrus
Unfortunately the developers agreement expressly forbids the use of
interpreters that load and run external programs. This is probably for the
simple reason that it would be almost impossible to secure, or even
guarantee that it wont exceed its space and mem usage bounds required by
AppStore apps.
1) You'll need a terminal application first, and I'm not sure if there
is one in AppStore. In fact, I AM sure there isn't.
2) My iPod Touch is still running 1.1.4 firmware; I've heard it's not
that easy on 2.0 and later.
3) Personally, I'd love to see ghc on iPhone. It could even persuade
I saw Miguel Mitrofanov (
http://www.nabble.com/Hugs-on-the-iphone-td19478992.html) successfully
ported Hugs to the iPhone. I'm now wondering if anyone has tried to get
Apple's blessing to put this in the App Store? It would be really great to
be able to try out little Haskell ideas as the mood s
friggin friggin ha scritto:
I was looking for a shuffling algorithm to shuffle mp3-playlists so was
very happy to see System.Random.Shuffle:
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/random-shuffle-0.0.2
However I get errors,non-exhaustive patterns in function shufleTree or
e
I was looking for a shuffling algorithm to shuffle mp3-playlists so was very
happy to see System.Random.Shuffle:
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/random-shuffle-0.0.2
However I get errors,non-exhaustive patterns in function shufleTree or
extractTree depending how I call
Hello,
I've written something simple:
main:: IO ()
main= do lijn <- getLine
putStrLn lijn
Now if I import it in Helium it will do the following:
Test> main
test -- (here I'm typing test)
test
it will be displayed two times,
Alexandr N. Zamaraev wrote:
Sigbjorn Finne wrote:
Hi Wilkes,
you may want to have a look at a simple example of how to
interop with Windows WMI using the COM package at --
http://haskell.forkio.com/com-examples
I try compile WMIDemo.hs but recive error:
[code]
c:\htest>ghc --make WMIDemo.hs
Nicolas Pouillard gmail.com> writes:
>
> Hi folks,
>
> We have good news (nevertheless we hope) for all the lazy guys standing there.
> Since their birth, lazy IOs have been a great way to modularly leverage all
> the
> good things we have with *pure*, *lazy*, *Haskell* functions to the real wor
For the first time, we've got download and popularity statistics from
Hackage:
http://www.galois.com/blog/2009/03/23/one-million-haskell-downloads/
Find out if your package made the top 100, and when we reach our 1
millionth hackage download!
-- Don
_
sfvisser:
> Hello,
>
> Currently I'm trying to upload a minor update of Salvia to Hackage to
> fix some dependency issues but Hackage times out all the time? Both the
> CLI tool and the web-interface do not react to my upload request.
>
> Any known problems here?
Discussion taking place on libr
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Rafael Cunha de Almeida wrote:
| Hello,
|
| I am writing a OpenGL program in haskell, it can be found in:
| http://github.com/aflag/galo/tree/master
| But I hope this e-mail will be self-contained :).
|
| My main function goes like this:
| (
Am Montag, den 23.03.2009, 12:55 + schrieb Jens Blanck:
> The above approach does not apply to my case. What I have is a
> monotone function f on a partial order satisfying f x >= x, for all x.
> Given that the partial order is in fact a cpo this is enough to
> guarantee that a least fixed poi
Benjamin L.Russell wrote:
This is wonderful--just what I was waiting for! The application looks
beautiful, and I'm very happy that GHCi now has a matching GUI
application along the lines of WinHugs.
Indeed - me too !
It would be even better if you could provide some
installation/uninstallat
ChrisK writes:
> You should ensure that the result of "evaluate" is in normal form, not
> just weak head normal form. You can do this with the
> Control.Parallel.Strategies module:
>
>> import Control.Exception(ArithException(..),try,evaluate)
>> import Control.Parallel.Strategies(NFData,using,r
Just another couple of thoughts for possible additional improvement:
1. It would be even nicer if WinGhci added a menu entry to the
"Start" menu automatically, as WinHugs does.
2. For the proposed menu entry, it would also probably be a good idea
if WinGhci added a folder for that menu entry, a
>
>
> On Friday 20 March 2009 5:23:37 am Ryan Ingram wrote:
> > On Fri, Mar 20, 2009 at 1:01 AM, Dan Doel wrote:
> > > However, to answer Luke's wonder, I don't think fixAbove always finds
> > > fixed points, even when its preconditions are met. Consider:
> > >
> > > f [] = []
> > > f (x:xs)
This is wonderful--just what I was waiting for! The application looks
beautiful, and I'm very happy that GHCi now has a matching GUI
application along the lines of WinHugs.
It would be even better if you could provide some
installation/uninstallation information. I unzipped the contents of
WinGh
You should ensure that the result of "evaluate" is in normal form, not just weak
head normal form. You can do this with the Control.Parallel.Strategies module:
import Control.Exception(ArithException(..),try,evaluate)
import Control.Parallel.Strategies(NFData,using,rnf)
import System.IO.Unsafe
Hello,
On Sun, Mar 22, 2009 at 04:08:59PM +0100, Alex Ott wrote:
> May be providing profiling information for kcachegrind will be a good
> solution? For example, there are tools for PHP, that allow to view
> collected information in kcachegrind, and get interactive zooming, etc.
This is really a
Hi,
I just feel it is not comfortable to deal with exceptions
only within IO monad, so I defined
> tryArith :: a -> Either ArithException a
> tryArith = unsafePerformIO . try . evaluate
and it works quite good as
> map (tryArith . (div 5)) [2,1,0,5]
evaluates to
> [Right 2,Right 5,Left divide
Hello,
Currently I'm trying to upload a minor update of Salvia to Hackage to
fix some dependency issues but Hackage times out all the time? Both
the CLI tool and the web-interface do not react to my upload request.
Any known problems here?
Gr,
Sebastiaan.
__
Hi, I am pleased to announce the first release of WinGhci.
WinGhci is a simple GUI for GHCI on Windows. It is closely based on WinHugs,
and provides similar functionality.
WinGhci project web page:
http://code.google.com/p/winghci/http://code.google.com/p/winghci/>
Binaries:
http://winghci.goog
On Mon, 23 Mar 2009, nicolas.pouillard wrote:
Excerpts from Henning Thielemann's message of Mon Mar 23 11:06:20 +0100 2009:
Yes
Then what do you mean by "lifting to LazyIO to SIO actions"?
Do you mean
liftSIO :: SIO a -> LazyIO.T a
which says that we only lift computations that explicit
Excerpts from Henning Thielemann's message of Mon Mar 23 11:06:20 +0100 2009:
>
> On Mon, 23 Mar 2009, nicolas.pouillard wrote:
>
> > Excerpts from Henning Thielemann's message of Sun Mar 22 23:58:44 +0100
> > 2009:
> >>
> >> On Sun, 22 Mar 2009, nicolas.pouillard wrote:
> >>
> >>> It sounds lik
On Mon, 23 Mar 2009, nicolas.pouillard wrote:
Excerpts from Henning Thielemann's message of Sun Mar 22 23:58:44 +0100 2009:
On Sun, 22 Mar 2009, nicolas.pouillard wrote:
It sounds like a nice idea, it would be great to have a straight-io package
to play a bit more with explicit exceptions i
Hello all,
I'm trying to use the generic capabilities of HSTringTemplate. The
documentation claims that the package is able to automatically generate
instances of ToSElem if syb-with-class is installed but gives no further
details. I installed syb-with-class and then installed HSTringTemplate
w
Excerpts from Henning Thielemann's message of Sun Mar 22 23:58:44 +0100 2009:
>
> On Sun, 22 Mar 2009, nicolas.pouillard wrote:
>
> > It sounds like a nice idea, it would be great to have a straight-io package
> > to play a bit more with explicit exceptions in things like 'IO'.
>
> Maybe I shoul
Excerpts from Thomas Hartman's message of Mon Mar 23 09:08:41 +0100 2009:
> I got bitten by a bug (well, I call it bug) in bracketCD from
> HSH/MissingH demonstrated by the following code
>
> bracketCD is very useful for sysadminny one-offs, I use it all the
> time, but. I suspect that unless
Sigbjorn Finne wrote:
Hi Wilkes,
you may want to have a look at a simple example of how to
interop with Windows WMI using the COM package at --
http://haskell.forkio.com/com-examples
I try compile WMIDemo.hs but recive error:
[code]
c:\htest>ghc --make WMIDemo.hs
[2 of 2] Compiling WMIDemo
I got bitten by a bug (well, I call it bug) in bracketCD from
HSH/MissingH demonstrated by the following code
bracketCD is very useful for sysadminny one-offs, I use it all the
time, but. I suspect that unless people are very careful, this
behavior will affect other users of bracketCD, in pot
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