Tillmann,
Thank you for your detailed reply. It was a real eye opener. I
hadn't seen anything like that before.
It seems that your ShapeClass is very similar to, and plays the same
role as, the Class ShapeC from my example. I wonder if that was how
haskellers implemented shared functions
Hi!
Is there a way to disable throwing BlockedIndefinitelyOnMVar
exceptions? Because I am doing small program where I do not care if
some threads block. As at the end user will have to interrupt the
program anyway.
Mitar
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Good catch, that was most definitely a space leak in pool. I've
uploaded version 0.0.1.1, would you mind testing?
Thanks,
Michael
On Thu, Mar 31, 2011 at 2:52 AM, Ertugrul Soeylemez e...@ertes.de wrote:
Hello Michael, hello fellow Haskellers,
there seems to be a space leak in either 'pool',
Hi all,
I have a package[1] which uses some system libraries (Qt to be
precise). On Linux (and I'm hoping Mac), it's able to use pkg-config
to determine which libraries are necessary and where to find all the
files. On Windows, I've been less than successful using pkg-config.
However, I *was*
I am only a sophomore and haven't taken any course in Computational Physics. So
what I would like will be to take a library or program with some excellent
documentation and use it as a base for learning about computational physics
and Haskell. This is one of the things I plan to do in
John Millikin jmilli...@gmail.com writes:
OSX's chief weirdness is that its GUI programs swap ':' and '/' when
displaying filenames.
A remnant from the bad old days of MacOS 10, where : was the path
separator, and / was a perfectly good character to use in filenames.
-- | Try to decode a
On 31 March 2011 09:13, Ketil Malde ke...@malde.org wrote:
-- | Try to decode a FilePath to Text, using the current locale encoding. If
-- the filepath is invalid in the current locale, it is decoded as ASCII and
-- any non-ASCII bytes are replaced with a placeholder.
Why not map them to
Message: 15
Date: Mon, 28 Mar 2011 21:31:39 +0400
From: Michael A Baikov pa...@bk.ru
Subject: [Haskell-cafe] Iteratee, ghc 6.12/7.0 strange behaviour -
epollControl: permission denied (Operation not permitted)
To: haskell-cafe@haskell.org
Message-ID:
I don't know if there's a way to disable it, but you can wrap all your
spawned threads with an exception handler that catches BlockedIndefinitelyOnMVar
and ignores it. If the thread blocks indefinitely, it's as good as dead,
so there won't be any difference in behavior.
Cheers,
Edward
Am 31.03.2011 05:59, schrieb Felipe Almeida Lessa:
On Wed, Mar 30, 2011 at 2:39 PM, Gilberto Garciagiba@gmail.com wrote:
fkSum :: Int - [Int] - Int
fkSum a [] = 0
fkSum a (b) = foldl (+) 0 (filter (\x - isMultiple x b) [1..a])
Daniel Fischer and Yves Parès gave you good suggestions
I find this behaviour a little annoying. Sometimes I *want* the thread
to block indefinitely! I.e. I want it to block until it receives a
KillThread exception. Is there a better way to accomplish that without
waiting on an MVar which will never fill? As a workaround what I've
been doing lately is
On 31/03/11 11:03, Gregory Collins wrote:
I'm guessing the trigger condition for
BlockedIndefinitelyOnMVar is blocked and mvar refcount == 1
It's not simply a reference count (the thread that's blocked forever can
hold multiple references to the MVar and it's still blocked
indefinitely).
On Thursday 31 March 2011 11:45:00, Christian Maeder wrote:
Since we don't have a function sum' in the Prelude (should we have it?)
I think we should.
I wonder what happens if you just use sum. Will the sum (based on
sum' so without -DUSE_REPORT_PRELUDE) be strict enough?
I don't know
Message: 7
Date: Tue, 29 Mar 2011 22:39:12 -0400
From: wren ng thornton w...@freegeek.org
Subject: Re: [Haskell-cafe] ANNOUNCE: enumerator 0.4.8
To: haskell-cafe@haskell.org
Message-ID: 4d9297d0.7060...@freegeek.org
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 3/29/11
thanks for pointing out the openshake implementation.
when i remember correctly neil mitchell mentioned s.th. at the haskell
implementors workshop about making shake available sometimes later.
it's a bit sad to see that shake is completely off the table since it
really looked good.
after all...a
On Thu, Mar 31, 2011 at 10:54 AM, Azeem -ul-Hasan aze...@live.com wrote:
I am only a sophomore and haven't taken any course in Computational Physics.
So what I would like will be to take a library or program with some
excellent documentation and use it as a base for learning about
Just to be sure, because I am not quite familiar with the dark hairy
internals of GHC:
Of course, given a type signature that allows strictness to be inferred.
You mean a signature with no type variables and types that are know to GHC
as being strict?
(Like Int - Int - Int instead of (Num a) =
On 11-03-30 05:29 PM, Mathijs Kwik wrote:
Hi all,
I'm playing around a bit with arrows (more specifically, something
like a CPS style streamprocessor as described in Generalising Monads
to Arrows by John Hughes).
I had struggled with the same problem a year ago, and I concluded it
was
On 31 March 2011 12:44, oliver mueller oliver.muel...@gmail.com wrote:
it's a bit sad to see that shake is completely off the table since it
really looked good.
I think Neil has had trouble getting permission to release the code,
which is why I wrote openshake.
maybe openshake can fill in
Parallel Haskell Digest
===
Edition 1
2011-03-31
http://www.well-typed.com/blog/52
Hello Haskellers!
If you're in the mood for a HWN chaser, I'd like to introduce the first
Parallel Haskell Digest, a newsletter aiming to show off all the work
that's going on using parallelism
On Thursday 31 March 2011 14:27:59, Yves Parès wrote:
Just to be sure, because I am not quite familiar with the dark hairy
internals of GHC:
Of course, given a type signature that allows strictness to be
inferred.
You mean a signature with no type variables and types that are know to
From: Gregory Collins g...@gregorycollins.net
Sent: Thu, March 31, 2011 5:03:09 AM
I find this behaviour a little annoying. Sometimes I *want* the thread
to block indefinitely! I.e. I want it to block until it receives a
KillThread exception. Is there a better way to accomplish that
On Mar 30, 2011, at 5:29 PM, Mathijs Kwik wrote:
So loop really doesn't seem to help here, but I couldn't find another
way either to feed outputs back into the system.
What I need is:
Either A B ~ Either C B - A ~ C
Does such a thing exist?
Based on your description, it sounds to me like you
Hi all,
I'm looking to start a Haskell user group in St. Louis, MO. Anyone
Haskellers or people interested in learning Haskell around these
parts?
-deech
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On Thu, Mar 31, 2011 at 11:01 AM, Matthew Steele mdste...@alum.mit.edu wrote:
On Mar 30, 2011, at 5:29 PM, Mathijs Kwik wrote:
So loop really doesn't seem to help here, but I couldn't find another
way either to feed outputs back into the system.
What I need is:
Either A B ~ Either C B - A ~
It works fine up to the point when makefdCallback tries to use
GHC.Conc.threadWaitRead on fd
So my example is simplifed in to this:
import System.Posix.IO
import GHC.Conc
main = do
fd - openFd /etc/passwd ReadOnly Nothing defaultFileFlags
threadWaitRead fd-- the big bang
On Thu, Mar 31, 2011 at 11:19 AM, Michael A Baikov pa...@bk.ru wrote:
import System.Posix.IO
import GHC.Conc
main = do
fd - openFd /etc/passwd ReadOnly Nothing defaultFileFlags
threadWaitRead fd-- the big bang happens right here.
closeFd fd
There were a couple of bugs in
I am running 7.0.3.
-Original Message-
On Thu, Mar 31, 2011 at 11:19 AM, Michael A Baikov pa...@bk.ru wrote:
import System.Posix.IO
import GHC.Conc
main = do
fd - openFd /etc/passwd ReadOnly Nothing defaultFileFlags
threadWaitRead fd-- the big bang happens
Hi!
On Thu, Mar 31, 2011 at 4:37 PM, Brandon Moore
brandon_m_mo...@yahoo.com wrote:
If you plan to send an exception, you must have the ThreadId saved elsewhere,
which should prevent the BlockedIndefinitelyOnMVar exception.
But this behavior is something they wish to remove in future versions
- Original Message
From: Mitar mmi...@gmail.com
To: Brandon Moore brandon_m_mo...@yahoo.com
Cc: Gregory Collins g...@gregorycollins.net; Edward Z. Yang
ezy...@mit.edu;
Haskell Cafe haskell-cafe@haskell.org
Sent: Thu, March 31, 2011 2:06:31 PM
Subject: Re: [Haskell-cafe]
On Thu, Mar 17, 2011 at 11:14 PM, Andrew Coppin
andrewcop...@btinternet.com wrote:
Right. So somebody else came up with an idea similar to mine, but since
nobody could agree on anything more than a rough idea, nothing actually
got
done...(?)
Well, I also got the sense that it would be more
On Thu, Mar 31, 2011 at 7:29 AM, Daniel Fischer
daniel.is.fisc...@googlemail.com wrote:
Err, terminology problem here.
Strictly speaking, a function is strict iff
f _|_ = _|_
while we are talking here about evaluation strategies, so we should better
have spoken of eager vs. deferred
On 31/03/2011, at 9:13 PM, Ketil Malde wrote:
John Millikin jmilli...@gmail.com writes:
OSX's chief weirdness is that its GUI programs swap ':' and '/' when
displaying filenames.
A remnant from the bad old days of MacOS 10, where : was the path
separator, and / was a perfectly good
Hello cafe,
Let me announce a maintenance command of Haskell cabal packages.
http://www.mew.org/~kazu/proj/cab/en/
cab is a MacPorts-like maintenance command of Haskell cabal
packages. Some part of this program is a wrapper to ghc-pkg and
cabal.
If you are always confused due to
On 1 April 2011 10:48, Kazu Yamamoto k...@iij.ad.jp wrote:
Hello cafe,
Let me announce a maintenance command of Haskell cabal packages.
http://www.mew.org/~kazu/proj/cab/en/
cab is a MacPorts-like maintenance command of Haskell cabal
packages. Some part of this program is a
whoah, it has uninstall!!! awesome!
It just unregisters libraries not delete them actually. But I guess it
is enough for you.
The cabal-delete command does delete libraries and I'm planning to
integrate cab and cabal-delete. But the author of cabal-delete
is now suffering from the Tsunami in
On Thu, Mar 31, 2011 at 7:07 PM, Kazu Yamamoto k...@iij.ad.jp wrote:
whoah, it has uninstall!!! awesome!
It just unregisters libraries not delete them actually. But I guess it
is enough for you.
The cabal-delete command does delete libraries and I'm planning to
integrate cab and
Hello,
Have you read this?
http://www.reddit.com/r/haskell/related/f3ykj/
psa_use_cabaldev_to_solve_dependency_problems/
I did know this page. I will read it later. Thank you.
cabal-dev is a wrapper around cabal. It creates the directory
cabal-dev in your current directory when you run
On Thu, Mar 31, 2011 at 7:19 PM, Kazu Yamamoto k...@iij.ad.jp wrote:
cabal-dev is a wrapper around cabal. It creates the directory
cabal-dev in your current directory when you run commands.
Yes, I know. But when I typed cabal-devel install on a package
directory, nothing happened.
Can you
Hello,
cabal-dev is a wrapper around cabal. It creates the directory
cabal-dev in your current directory when you run commands.
Yes, I know. But when I typed cabal-devel install on a package
directory, nothing happened.
Can you give a specific example? Surely *something* happened :)
I
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