Hi all,
I'm happy to announce that my Google Summer of Code project proposal,
titled "Extend EclipseFP functionality for Haskell", has been
accepted! This means that I will be working on EclipseFP during the
upcoming months.
For the uninitiated, EclipseFP is a plugin for the Eclipse IDE that
make
On Thu, May 14, 2009 at 10:14, Wolfgang Jeltsch
wrote:
> 4) The identifiers State and StateT are flawed. Something of value State s a
> doesn’t denote a state but a state transformer or however you want to name
> it.
A "state monad", i.e. a monad containing a state? If you use it in a
sentence in
On Thu, May 21, 2009 at 00:54, Michael Mossey wrote:
> I call it "design by negation." When asked to justify his design, the lead
> software architect explains everything that *wouldn't* work. "We couldn't
> have a unique key for every entry because blah blah blah. We couldn't use a
> garbage coll
What comes to my mind is that you could launch your program from
inside GHCi, instead of the other way round. Just write an IO ()
function that spawns a new thread for the window, graphics, input
handling and all that. Call this function from GHCi and your window
will appear. Then write some other
http://hackage.haskell.org/packages/archive/HSH/latest/doc/html/HSH.html
does take me to a page that says
"HSH-2.0.0: Library to mix shell scripting with Haskell programs"
in the blue bar at the top.
Maybe some kind of cache? Did you try flushing your browser cache and
refreshing? Am I missing som
Possible, yes.
Efficient, not really.
> inTwain = foldr (\x (ls, rs) -> if length ls == length rs then (x:ls, rs)
> else (x:(init ls), (last ls):rs)) ([], [])
I have a hunch that everything that reduces a list to a fixed-size
data structure can be expressed as a fold, simply by carrying around
I have been thinking about this same problem a while ago, and found
that HaXml [1] can generate Haskell types from a DTD schema. However,
the code that you need to build HTML from that is quite verbose.
Being no expert in Haskell, I talked to Twan van Laarhoven, who came
up with something [2] that
On Mon, Jun 8, 2009 at 02:04, Iavor Diatchki wrote:
> Hello,
> Here is an update, in case anyone else runs into the same problem.
>
> My understanding, is that the problem was caused by a mistake in the
> "configure" script for the "network" package, which after (correctly)
> detecting that IPv6 fu
On Mon, Jun 8, 2009 at 11:05, Niemeijer, R.A. wrote:
> which, face it, is going to be all of them; I doubt Haskell
> is popular enough yet to be the target of DoS attacks
Second that. I think this is a good case in which some security should
be traded in for usability. And even if a DoS attack occ
On Mon, Jun 8, 2009 at 13:11, Ron de Bruijn wrote:
> Mark Wassell schreef:
>> Have you tried
>> http://hackage.haskell.org/cgi-bin/hackage-scripts/package/pngload ?
> Hi Mark,
>
> I just did:
>
> import Codec.Image.PNG
>
> png_file_to_2d_array file = do
> either_error_string_or_png <- loadPNGFile
On Tue, Jun 9, 2009 at 15:23, michael rice wrote:
> import Data.Map (Map) (fromList,!) ???
> import qualified Data.Map as Map (fromList,!) ???
Because ! is an operator, you need to enclose it in parentheses. Also,
the (Map) in the import is already the list of things you are
importing; you can
I would like to have a go at it. Could you maybe upload the vector
version somewhere?
Thanks,
Thomas
On Thu, Jun 11, 2009 at 13:22, Eugene Kirpichov wrote:
> The idea is pretty cool, but at first sight the batteries look like a
> graphical glitch. Probably some antialiasing or smoothening is
> n
On Fri, Jun 12, 2009 at 11:25, Thomas Davie wrote:
> With various people's ideas taken into account, I've created a new version
> of my attempt:
>
> http://www.cs.kent.ac.uk/people/rpg/tatd2/logo-1.png
> http://www.cs.kent.ac.uk/people/rpg/tatd2/logo-1.svg
>
> I think the yellow/black is easily eno
This runs on MediaWiki, right? How about adding a CAPTCHA for account
registrations?
http://www.mediawiki.org/wiki/Extension:ConfirmEdit
And, more generally:
http://www.mediawiki.org/wiki/Manual:Combating_spam
Cheers,
Thomas
On Fri, Jun 12, 2009 at 18:46, Gwern Branwen wrote:
> -BEGIN PGP
How much output does this generate? Does it matter if you send the
output to /dev/null? This looks as if the bottleneck might well be in
I/O operations, not in the code itself. To find this out, you could
rewrite the code in C and see if that makes a difference?
Thomas
On Sun, Jun 14, 2009 at 20:
On Sun, Jun 14, 2009 at 21:23, Jochem Berndsen wrote:
> Alberto G. Corona wrote:
>> Once more I forgot to send my messages to the haskell cafe list. All the
>> rest of the list which I惴 suscribed to, send the mail replies to the list
>> automatically, but this doesn��. Please, can this be changed?
On Mon, Jun 15, 2009 at 10:24, Ketil Malde wrote:
> Luke Palmer writes:
>
>> Nice work, I love this one. :-)
>
> Yes, very nice.
>
> I do find the lambda and > too fat, but I presume that's the way the
> Haskell logo looks. Also, I think the right edges of the thick part of
> the batteries should
On Sun, Jun 28, 2009 at 15:24, Andrew Coppin wrote:
> I just wrote a small module for dealing with half-integers. (That is, any
> number I/2 where I is an integer. Note that the set of integers is a subset
> of this; Wikipedia seems to reserve "half-integer" for such numbers that are
> *not* intege
On Sun, Jun 28, 2009 at 17:14, michael rice wrote:
> as opposed to an "inferred type"?
There was a thread on haskell-cafe about this a few weeks ago. Here it
is in the archives:
http://www.haskell.org/pipermail/haskell-cafe/2009-May/062012.html
Maybe some post in there might help. Maybe they will
You cannot link statically to a .dll file. Either link statically with
the so-called "import library" (.lib) (there are tools to generate one
from a .dll, I believe), or link statically with a static build of
SQLite, which is also a .lib file.
Hope that helps,
Thomas
On Wed, Jul 1, 2009 at 19:18
I used the State monad to implement a Brainfuck [1] interpreter a few
months ago. It stored the program counter, pointer and the memory of
the machine.
There might have been a different (better?) way, but as I was trying
to learn more about monads, it was an obvious choice.
Thomas
[1] http://www
Are there any kind of hard statistics and analytics that we can base
this discussion upon? There is always room for improvement, but
stumbling around in the dark making blind guesses may not be the best
way to go. Although I personally feel that Lenny's proposed page is an
improvement, statistics c
By the way, the most valuable pixels, right at the top of the page,
are wasted on wiki stuff. Compare
http://www.haskell.org/
with, for example,
http://www.ruby-lang.org/
http://python.org/
If, like the consensus seems to be, the page should be made more
friendly to beginners (who are unlikely to
I ran a little experiment of my own, using a GHC HEAD build of a week
or so ago. Here's a hex dump of my test source, so that we can see
that it's really UTF-8.
$ od -xc Test.hs
000 6f6d 7564 656c 4d20 6961 206e 6877 7265
m o d u l e M a i n w h e r
There are two ways of looking at the mod operator (on integers):
1. As a map from the integers Z to Z/pZ.
Then n mod p is defined as:
n mod p = { k | k in Z, k = n + ip for some i in Z }
Instead of the set, we ususally write its smallest nonnegative
element. And yes, in that sense, Z/0Z gives:
n m
On Sun, Aug 2, 2009 at 12:25, Petr Pudlak wrote:
> Hi all,
>
> I'd like to convince people at our university to pay more attention to
> functional languages, especially Haskell. Their arguments were that
>
> (1) Functional programming is more academic than practical.
Which, even if it were t
On Sat, Aug 22, 2009 at 01:23, staafmeister wrote:
> But in general you have a structure like
>
> first line -- integer specifying the number of testcases (n)
> Then for each testcase
> a line with an integer specifying the number of edges (e)
> a line with e pairs of string s and int p where p is
To everyone involved in the Google Summer of Code program,
I have submitted a GSoC proposal to work on EclipseFP, the Haskell
plugin for Eclipse. The proposal is crossposted to both haskell.org
and the Eclipse Foundation, each in their respective templates. This
is also stated at the top of the pr
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