Moving the discussion from haskell to haskell-cafe.
Chris Heller wrote:
http://github.com/hellertime/time-recurrence
A library for generating and inspecting recurring times.
Very nice. Please put it up on hackage so we can see the
haddocks, try it out easily, etc.
hoping to solicit some
On Sun, May 22, 2011 at 15:03, Johannes Waldmann
waldm...@imn.htwk-leipzig.de wrote:
I think you should file a bug report with a test case
on GHC.
I am willing to work on this, but I thought I'd go fishing for some
advice first. My program uses: forkIO, STM, and FFI.
I've seen something
On 5/22/11 8:40 AM, Aleksandar Dimitrov wrote:
If you have too much trouble trying to get SRILM to work, there's
also the Berkeley LM which is easier to install. I'm not familiar
with its inner workings, but it should offer pretty much the same
sorts of operations.
Do you know how BerkeleyLM
[TL;DR: there's a concrete question at the bottom.]
Once again I find myself in the pleasant situation where the slings
and arrows of life in general are slightly less intense, and I manage
to find a few spare minutes and some free brain cycles to dedicate to
Haskell.
Why not try GHC
Message: 17
Date: Fri, 20 May 2011 15:59:51 -0700
From: Evan Laforge qdun...@gmail.com
Subject: Re: [Haskell-cafe] Status of Haskell + Mac + GUIs graphics
To: Erik Hesselink hessel...@gmail.com
Cc: haskell-cafe@haskell.org
Message-ID: BANLkTi=74mm6ortu2e192jtoot9g49f...@mail.gmail.com
On 18/05/2011 19:22, Jason Dagit wrote:
On Wed, May 18, 2011 at 2:50 AM, John Sneerjohnsn...@operamail.com wrote:
Hello all,
I know it is not probably good question to this list, but anyway,
could anyone point me to some more detailed how to where is
described building of Haskell
On Mon, May 23, 2011 at 5:17 AM, Jacek Generowicz
jacek.generow...@cern.ch wrote:
So, after this tale of agony, here are two concrete questions:
a) Am I right in concluding that GHC 7.0.3 will not run on OS X 10.5
(without unreasonable effort)?
This is a frustrating situation. Note that there
On 2011 May 23, at 13:45, Anthony Cowley wrote:
On Mon, May 23, 2011 at 5:17 AM, Jacek Generowicz
jacek.generow...@cern.ch wrote:
a) Am I right in concluding that GHC 7.0.3 will not run on OS X 10.5
(without unreasonable effort)?
This is a frustrating situation. Note that there is a binary
On Mon, May 23, 2011 at 8:16 AM, Jacek Generowicz
jacek.generow...@cern.ch wrote:
On 2011 May 23, at 13:45, Anthony Cowley wrote:
As for the platform, if it is giving you trouble, don't shy away from
just using GHC and cabal as normal! After you've cabal installed a few
big packages, you will
On 2011 May 23, at 14:29, Anthony Cowley wrote:
On Mon, May 23, 2011 at 8:16 AM, Jacek Generowicz
jacek.generow...@cern.ch wrote:
On 2011 May 23, at 13:45, Anthony Cowley wrote:
As for the platform, if it is giving you trouble, don't shy away
from
just using GHC and cabal as normal! After
On 2011 May 23, at 14:16, Jacek Generowicz wrote:
On 2011 May 23, at 13:45, Anthony Cowley wrote:
On Mon, May 23, 2011 at 5:17 AM, Jacek Generowicz
jacek.generow...@cern.ch wrote:
I think your strategy of nuking everything Haskell through your
package manager (if available), then
On Monday 23 May 2011 14:16:43, Jacek Generowicz wrote:
From this, you should be able to build 7.0.3 yourself.
That's interesting. I won't try that *right* now.
It's easy, assuming you have installed alex and happy (and preferably
hscolour), just download and unpack the source bundle,
From: Jacek Generowicz jacek.generow...@cern.ch
Sent: Monday, May 23, 2011 4:17 AM
[TL;DR: there's a concrete question at the bottom.]
Once again I find myself in the pleasant situation where the slings and
arrows
of life in general are slightly less intense, and I manage to find a few
On 2011 May 23, at 14:42, Daniel Fischer wrote:
On Monday 23 May 2011 14:16:43, Jacek Generowicz wrote:
If by cabal install you mean use the command cabal ... yeah, that
would be great, if only I could install cabal-install, which fails.
With what error?
Downloading and unpacking the
On Thu, 19 May 2011, Andrew Coppin wrote:
To all the people who look at Hackage, see that there are 6 different
libraries for processing Unicode text files, and claim that this is somehow a
*good* thing, I offer the above essay as a counter-example.
Recently I searched for an advanced way
On Monday 23 May 2011 15:08:41, Jacek Generowicz wrote:
On 2011 May 23, at 14:42, Daniel Fischer wrote:
On Monday 23 May 2011 14:16:43, Jacek Generowicz wrote:
If by cabal install you mean use the command cabal ... yeah, that
would be great, if only I could install cabal-install, which
On 2011 May 23, at 15:08, Jacek Generowicz wrote:
On 2011 May 23, at 14:42, Daniel Fischer wrote:
$ ./bootstrap.sh
in that directory should work.
Configuring Cabal-1.8.0.2...
Setup: At least the following dependencies are missing:
base =4 3 =1 5, filepath =1 1.2
How am I
On 2011 May 23, at 15:22, Daniel Fischer wrote:
On Monday 23 May 2011 15:08:41, Jacek Generowicz wrote:
Cabal-1.8.0.2 will be downloaded and installed.
That's a bad sign.
Have you downoaded the bundle from the cabal-install page?
Ermmm, ys [sudden pangs of guilt] was that not the
b) On Ubuntu Natty I installed the generic linux GHC 7.0.3 binary.
Downloaded Haskell Platform 2011.2.0.1 source distribution. ./
I just did this (in a pristine virtual machine):
* install ubuntu-11.04-desktop-amd64.iso
* sudo apt-get install libgmp3-dev zlib1g-dev libglut3-dev
* install
Thanks for the feed back.
Very nice. Please put it up on hackage so we can see the
haddocks, try it out easily, etc.
I've registered for an account, and will have it up on Hackage just as
soon as I can. For now you can see the Haddock docs for the library
at:
The thing that's usually failing is cabal install unix-compat,
which requires sudo apt-get install libbsd-dev. - J.W.
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Summarizing, by answering my own question on the basis of the help I
have received elsewhere in the thread.
On 2011 May 23, at 11:17, Jacek Generowicz wrote:
a) Am I right in concluding that GHC 7.0.3 will not run on OS X 10.5
(without unreasonable effort)?
It takes little effort on the
Librarians have been struggling for years with classifying topics; I
don't imagine classifying coding libraries as any easier. :)
--
--
Regards,
KC
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On Fri, May 20, 2011 at 11:12 PM, Simon Meier iridc...@gmail.com wrote:
There, seems to be a historical artefact here. The new Write
abstraction in system-io-write is different from the one used in
blaze-builder. It's type is
data Write a = Write Int (a - Ptr Word8 - IO (Ptr Word8))
This
What's the best way to end up with a list composed of only the Just values,no
Nothings?
Michael
==
import Control.Monad.Stateimport Data.Maybe
type GeneratorState = State Int
tick :: GeneratorState (Maybe Int)tick = do n - get if ((n `mod` 7)
== 0)
Cabal-1.8.0.2 will be downloaded and installed.
That's a bad sign.
Have you downoaded the bundle from the cabal-install page?
Ermmm, ys [sudden pangs of guilt] was that not the right thing to do?
That's not the right thing to do
Darn!
(yeah, somebody should tell unsuspecting
On 23 May 2011, at 17:20, michael rice wrote:
What's the best way to end up with a list composed of only the Just values,
no Nothings?
Go to haskell.org/hoogle
Type in [Maybe a] - [a]
Click on first result.
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On 5/23/11 9:20 AM, michael rice wrote:
What's the best way to end up with a list composed of only the Just
values,
no Nothings?
Try catMaybes in Data.Maybe.
Cheers,
Greg
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On 23 May 2011 17:20, michael rice nowg...@yahoo.com wrote:
What's the best way to end up with a list composed of only the Just values,
no Nothings?
http://haskell.org/hoogle/?hoogle=%3A%3A+%5BMaybe+a%5D+-%3E+%5Ba%5D
Data.Maybe.catMaybes is what you want :-)
Cheers,
Max
On 23 May 2011, at 17:20, michael rice wrote:
What's the best way to end up with a list composed of only the Just values,
no Nothings?
Alternatively,
[ x | Just x - originals ]
It also occurs to me that perhaps you still want the Just constructors.
[ Just x | Just x -
On 5/23/11 9:29 AM, Max Bolingbroke wrote:
On 23 May 2011 17:20, michael rice nowg...@yahoo.com
mailto:nowg...@yahoo.com wrote:
What's the best way to end up with a list composed of only the
Just values,
no Nothings?
In terms of making the interface more friendly to beginners, I wonder if
this is partially an issue of how to search and how to format the results. I
just searched several places for xml rpc and found:
Hackage: the first few links from the google search are different versions
of haxr
Hayoo: 0
I'm trying to cabal install lambdabot. This depends on a squillion
other libraries, which cabal tries to install, among which is
readline, which fails to configure as follows.
Configuring readline-1.0.1.0...
checking for gcc... gcc
checking for C compiler default output file name... a.out
Excerpts from Jacek Generowicz's message of Mon May 23 19:15:53 +0200 2011:
Where should I be looking for the relevant config.log?
Maybe you're missing header files? is there a readline-dev package for
your distro?
also open the cabal file and watch for include or library directorie
settings.
On Mon, May 23, 2011 at 9:20 AM, michael rice nowg...@yahoo.com wrote:
What's the best way to end up with a list composed of only the Just values,
no Nothings?
Michael
==
import Control.Monad.State
import Data.Maybe
type GeneratorState = State Int
tick ::
Thanks, all.
Earlier, I was going to ask how to break out of a sequence op prematurely,
i.e., you give it some replication number but want to break early if you get an
end-flag value. While I was composing the post I thought of using Maybe for the
good values and Nothing for the end value.
On 2011 May 23, at 19:31, Marc Weber wrote:
Excerpts from Jacek Generowicz's message of Mon May 23 19:15:53
+0200 2011:
Where should I be looking for the relevant config.log?
Maybe you're missing header files?
I checked whether the -dev packages were installed, and they were
present
On Mon, May 23, 2011 at 4:32 AM, Simon Marlow marlo...@gmail.com wrote:
On 18/05/2011 19:22, Jason Dagit wrote:
On Wed, May 18, 2011 at 2:50 AM, John Sneerjohnsn...@operamail.com
wrote:
Hello all,
I know it is not probably good question to this list, but anyway,
could anyone point me
'if all == False then return False else return True' is a pretty
confusing way to say 'return all'. In fact, any time you see 'x ==
True' you can just remove the '== True'. The whole postAll thing
would be clearer as
Before doing a code review I always demand that the author runs over
the
On Mon, May 23, 2011 at 10:49:55AM -0700, Alexander Solla wrote:
On Mon, May 23, 2011 at 9:20 AM, michael rice nowg...@yahoo.com wrote:
What's the best way to end up with a list composed of only the Just values,
no Nothings?
Michael
==
import
On 05/23/2011 12:08 PM, Brent Yorgey wrote:
Just a minor quibble: note that
filter (not . isNothing)
is slightly preferable since it does not introduce a frivolous
equality constraint on the type wrapped by the Maybe.
Or even better,
filter isJust
:-)
Cheers,
Greg
Brent Yorgey schrieb:
On Mon, May 23, 2011 at 10:49:55AM -0700, Alexander Solla wrote:
There's a library function for it, but also:
filter ((/=) Nothing)
is readable enough.
Just a minor quibble: note that
filter (not . isNothing)
is slightly preferable since it does not introduce a
Gregory Crosswhite gcr...@phys.washington.edu wrote:
Or even better,
filter isJust
To make it worse again the original function can be generalized in a few
ways. Here is a generalization from the inner Maybe type:
import Data.Foldable as F
catFoldables :: Foldable t = [t a] -
Several libraries (notably Pandoc and Gtk2hs) have very complex Setup.hs
scripts, which import several external libraries. In my experience, these
imports are very fragile, because Cabal does not enforce package visibility
in Setup.hs. For example, a Setup.hs that imports Control.Monad.Trans
On 24/05/2011, at 5:49 AM, Alexander Solla wrote:
There's a library function for it, but also:
filter ((/=) Nothing)
The problem with that in general is that it only
applies to [Maybe t] if Eq t, but you don't
actually _need_ t to support equality.
filter isJust
will do the job, where
Hi haskell-cafe.
I have a package which builds with cabal pretty fine, but there is
namespace issue which disturbs me. The problem is that the package
exports (to the toplevel namespace!) some modules with fairly general
names, like Tests, Basics, Applications. This is probably an oversight
of
On 24 May 2011 14:38, max ulidtko ulid...@gmail.com wrote:
Hi haskell-cafe.
I have a package which builds with cabal pretty fine, but there is
namespace issue which disturbs me. The problem is that the package
exports (to the toplevel namespace!) some modules with fairly general
names, like
On Tue, May 24, 2011 at 00:38, max ulidtko ulid...@gmail.com wrote:
I have a package which builds with cabal pretty fine, but there is
namespace issue which disturbs me. The problem is that the package
exports (to the toplevel namespace!) some modules with fairly general
names, like Tests,
Last I tried, there wasn't native support for OpenGL with gtk, and I need
OpenGL. Then more recently, I heard of some progress in that area, but
requiring lots of hacking to get it all compiling. Any recent news? - Conal
On Mon, May 23, 2011 at 2:33 AM, John Lato jwl...@gmail.com wrote:
Hey everyone,
Okay, this will sound silly, but I ventured into the Scala mailing list
recently and asked an ignorant question on it, and I was shocked when
people reacted not by enlightening me but by jumping on me and reacting
with hostility. I bring this up not to badmouth the Scala
The community plays a large part of why I am using Haskell
professionally. The Haskell ecosystem is first-rate all by itself, but
I would have been dead in the water months ago without the community.
On Mon, May 23, 2011 at 10:10 PM, Gregory Crosswhite
gcr...@phys.washington.edu wrote:
Hey
2011-05-23 22:10 -0700, Gregory Crosswhite:
Hey everyone,
Okay, this will sound silly, but I ventured into the Scala mailing list
recently and asked an ignorant question on it, and I was shocked when
people reacted not by enlightening me but by jumping on me and reacting
with hostility.
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