Thanks!
Looks a bit complex to me at the moment, but I'll probably have a look at it
when I have the time.
Tom Hawkins-2 wrote:
On Sun, Feb 14, 2010 at 1:30 AM, Yves Parès limestr...@gmail.com wrote:
I've been interested in using Atom since I saw this:
I've just done the first release of wyvern [1], a small program to
play moves for you on the Dragon Go Server [2], along with point
releases for two supporting libraries.
On DGS, people play many games of go simultaneously, making only one
move per day in each game (about). A commonly
Hello,
I am having difficulties running HGL on Mac OSX, Snow Leopard. Here is what
I've done:
–– 1. Installed X11 for OSX
(About dialog says: The X Window System, XQuartz 2.3.4 (xorg-server
1.4.2-apple45))
–– 2. Got X11 from Hackage – configured, built and installed – however, there
where
Loading package X11-1.5.0.0 ... can't load .so/.DLL for: X11
(dlopen(libX11.dylib, 9): image not found)
try
DYLD_LIBRARY_PATH=/usr/X11R6/lib ghci graphics.hs
http://hackage.haskell.org/trac/ghc/ticket/1019
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Hello,
I've got a problem, in short my haskell code sucks. While it does work
and I do manage to use higher-orderish aspects quite extensively to make
my code more concise it still is nowhere abstract, always concrete and
thus always with lots of boilerplate.
Oh I have gotten better
2010/2/14 Günther Schmidt gue.schm...@web.de:
So fellows, what is the next stop on my road to enlightenment? I really
think I need best to start from scratch. I think I'm sufficiently familiar
now with most of Haskell's technicalities but how do I climb the ladder of
abstraction?
A couple of
* On Sun, Feb 14 2010, Günther Schmidt wrote:
So fellows, what is the next stop on my road to enlightenment? I
really think I need best to start from scratch. I think I'm
sufficiently familiar now with most of Haskell's technicalities but
how do I climb the ladder of abstraction?
Read more
Here's an idea... maybe we should make a small page on the Wiki
explaining what all the various symbols in Haskell mean?
There are a couple which are rare enough that most tutorials don't
mention them that often. And there are of course symbols which mean
different things in different
* Simon Marlow:
In a sense the GC *is* deterministic: it guarantees to collect all the
unreachable garbage. But I expect what you're referring to is the
fact that the garbage remains around for a non-deterministic amount of
time. To me that doesn't seem to be a problem: you could run the GC
I like that idea. When I was first learning Haskell, I remember
spending a non-trivial amount of time trying to figure out what '$'
did. I incorrectly assumed that it was provided by some library. '!'
and '~' would certainly be other good candidates for this kind of a
page. These types of
MightyByte wrote:
I like that idea. When I was first learning Haskell, I remember
spending a non-trivial amount of time trying to figure out what '$'
did. I incorrectly assumed that it was provided by some library.
Technically, it is...
'!'
and '~' would certainly be other good
On Sun, Feb 14, 2010 at 8:39 AM, Andrew Coppin
andrewcop...@btinternet.com wrote:
MightyByte wrote:
I like that idea. When I was first learning Haskell, I remember
spending a non-trivial amount of time trying to figure out what '$'
did. I incorrectly assumed that it was provided by some
On Sun, Feb 14, 2010 at 09:00:14AM -0500, MightyByte wrote:
At any rate, they still don't help for things like '~', so
there's definitely a use for a wiki page like this.
Of course, Hoogle and Hayoo could be modified to show the docs
when such symbols are searched as a special condition.
--
Hi Günther
Promoting a slightly contrary view, I'm not sure that abstraction
should be a goal in itself. Richard Gabriel makes a point of valuing
'habitable' code over abstract code in his 'Patterns of Software' book
(free from his website now that it's out of print). Habitable code
being code
2010/2/14 Florian Weimer f...@deneb.enyo.de:
Most of the time, the concern is about pause times and the lack of
upper bounds on them. With traditional reference counting, this is
still a problem because if the last reference to a large data
structure goes away, you need to free the whole data
On Sun, 14 Feb 2010 14:24:03 +0100, Andrew Coppin
andrewcop...@btinternet.com wrote:
Here's an idea... maybe we should make a small page on the Wiki
explaining what all the various symbols in Haskell mean?
There are a couple which are rare enough that most tutorials don't
mention them
And, I've search the meaning of the symbol ~, but I've found nothing about
this (note that's not easy to search ~ on google ...)
Searching for haskell tilde produces a lot of results and they're
all relevant (on the first page at least).
D
___
Hi All,
I'd been looking for a mechanism to generate C from Haskell as EDSL - to
develop an OS. In the process, I ran into the Barrelfish project (
http://www.barrelfish.org) - They seem to be using Haskell based DSL
generator called Filet-O-Fish - http://www.barrelfish.org/fof_plos09.pdf
It will
i am getting these failures with pandoc, or maybe i am not using
markdown correctly
1. hello world
~
code block failed
~
* hello world
~
code block failed
~
* hello world
clode block failed
hello world
===
~
code block ok
~
Hi,
On Sun, Feb 14, 2010 at 4:44 PM, C K Kashyap ckkash...@gmail.com wrote:
For example, lets say, I wanted to write a EDSL for Linux's network drivers.
Could I use
Filet-O-Fish and generate a EDSL that allows me to write a driver in a
really highlevel manner and then generate the C code for
On Thu, Feb 11, 2010 at 4:28 AM, Limestraël limestr...@gmail.com wrote:
Eventually, I think using cabal during development may be convenient. The
only drawback is that you have to specify each dependency and -- above all
-- every module each time you add one.
Nevertheless, I'm not convinced
Jeremy Shaw wrote:
import Control.Concurrent
import Control.Concurrent.MVar
import System.Posix.Types
data RW = Read | Write
threadWaitReadWrite :: Fd - IO RW
threadWaitReadWrite fd =
do m - newEmptyMVar
rid - forkIO $ threadWaitRead fd putMVar m Read
wid - forkIO $
Henk-Jan van Tuyl wrote:
The symbols that are not specified in a library can be found here:
http://www.haskell.org/haskellwiki/Keywords
Ah, nice. It seems somebody else has already thought of this.
Also, I read this page and discovered something new within about 30
seconds. (Pattern
On 14 February 2010 16:02, Henk-Jan van Tuyl hjgt...@chello.nl wrote:
The symbols that are not specified in a library can be found here:
http://www.haskell.org/haskellwiki/Keywords
Hoogle used to show links to this page, when a keyword was searched, but not
anymore.
In section 5 ! on this
Finally, it is the array subscript operator:
let x = arr ! 10
Shouldn't this be
let x = arr !! 10
!! is the list subscript. Look in Data.Array.IArray for (!). Or Data.Map.
There's still no consensus on typeclasses for collections, so these
are all separate functions. Has anyone taken a
Quoting Jake Wheat jakewheatm...@googlemail.com:
On 14 February 2010 16:02, Henk-Jan van Tuyl hjgt...@chello.nl wrote:
Finally, it is the array subscript operator:
let x = arr ! 10
Shouldn't this be
let x = arr !! 10
(!) is for arrays, (!!) is for lists.
~d
On 14 February 2010 22:11, Evan Laforge qdun...@gmail.com wrote:
Finally, it is the array subscript operator:
let x = arr ! 10
Shouldn't this be
let x = arr !! 10
!! is the list subscript. Look in Data.Array.IArray for (!). Or Data.Map.
There's still no consensus on typeclasses for
On 14 February 2010 22:11, Evan Laforge qdun...@gmail.com wrote:
There's still no consensus on typeclasses for collections, so these
are all separate functions. Has anyone taken a shot at a set of
AT-using classes for the standard collections?
The standard collections have different shapes
On Feb 14, 2010, at 4:38 AM, Günther Schmidt wrote:
I've got a problem, in short my haskell code sucks. While it does
work and I do manage to use higher-orderish aspects quite
extensively to make my code more concise it still is nowhere
abstract, always concrete and thus always with lots
On Sun, Feb 14, 2010 at 2:22 PM, Stephen Tetley
stephen.tet...@gmail.com wrote:
On 14 February 2010 22:11, Evan Laforge qdun...@gmail.com wrote:
There's still no consensus on typeclasses for collections, so these
are all separate functions. Has anyone taken a shot at a set of
AT-using
Hi Evan
Singleton (aka wrap) would be nice - isn't it called Pointed in the
typeclassopedia but not otherwise existent? I suppose its missing by
historical accident rather than design.
I frequently use Semigroup (append but no zero) - there is one on
Hackage without any instances:
Stephen Tetley wrote:
Hi Evan
Singleton (aka wrap) would be nice - isn't it called Pointed in the
typeclassopedia but not otherwise existent? I suppose its missing by
historical accident rather than design.
I frequently use Semigroup (append but no zero) - there is one on
Hackage without
I'm no fan of (!!) on lists or other containers where it isn't O(1),
but lookup/member are a bit more promising. However are there any
useful derived operations or constructions that can be defined only in
terms of a Lookup type class? For comparison, Monoid has mconcat as a
derived op and
Alexander Solla wrote:
On Jan 27, 2010, at 4:57 PM, Conor McBride wrote:
Yes, the separation is not clear in Haskell. (I consider this
unfortunate.) I was thinking of Paul Levy's call-by-push-value
calculus, where the distinction is clear, but perhaps not as fluid as
one might like.
What,
Well I just noticed that the boilerplate part consists of this:
Import data by selecting fields from a table, feed them into some sort
of internal data structure for later querying, times 12. All this
involves quite a bit of boilerplate.
Yeah, I guess I could abstract here a little.
Günther
Michael Lesniak wrote:
elegance of Haskell. Whether Haskell becomes an easy choice for
commercial work or remains a boutique language depends on how easy it
is to build today's applications.
Do you (or anyone reading this thread) know of some kind of wishlist
of missing features and/or
Hi,
I tried to install happstack via cabal install happstack on my WinXP
system. While installation progress, my anti-virus software (Avira
AntiVir) warned me about dll_hsc_make.exe and files_hsc_make.exe to be a
Trojan horse called TR/Dropper.Gen. It's a bit confusing to get a
virus alert
http://johnmacfarlane.net/pandoc/README.html#delimited-code-blocks
Like regular code blocks, delimited code blocks must be separated from
surrounding text by blank lines.
goodluck
walter
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Hi Maciej,
Several open source projects suffered from false positives.
Usually you sent the file to the company having written your Virus
detection application for review. It may be a Virus. However it's very
unlikely. If you're in doubt you should compile from source and also
check the source
On Mon, Feb 15, 2010 at 11:28 AM, Marc Weber marco-owe...@gmx.de wrote:
unlikely. If you're in doubt you should compile from source and also
check the source which was used to compile ghc .. etc. I want to say if
you really want to be secure the amount of work is infinity.
Hello,
2010/2/14, Günther Schmidt gue.schm...@web.de:
Hello,
I've got a problem, in short my haskell code sucks. While it does work
and I do manage to use higher-orderish aspects quite extensively to make
my code more concise it still is nowhere abstract, always concrete and
thus always
Hello,
I've created a simple Mandelbrot set generator, using HGL, the source is
viewable at:
http://pastebin.dqd.cz/cUmg/
1. The problem is, that it is very slow. It is obvious that what takes the most
time is the mandel function computation. I have no idea, how it can be
improved.
2. What
Thanks for reply – another issue is with ghc:
$ ghc --make graphics.hs -lHSrts -lSystemStubs
(the only way which I found to compile correctly on OSX)
will compile okay and will run okay, but the program runs slowly and consumes
only 15 % of processor in average. In GHCI, it consumes easily 100
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