ivan.miljenovic:
The latest version of Matthew Sackman's Haskell bindings to Graphviz
[1] are now available on Hackage [2]. The reason there's a new
release only two weeks after the previous one is that I've made some
extensions to it (hence why I'm writing the announcement) that Matthew
has
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On Sat, 20 Sep 2008 23:38:16 -0700
Don Stewart [EMAIL PROTECTED] wrote:
And by now you know where which distro has it:
http://aur.archlinux.org/packages.php?ID=18343
I'm sorry, Don, but you're late... Gentoo had it last night (as soon
Excerpts from Andrew Coppin's message of Sun Sep 21 02:44:10 -0500 2008:
1. How is putting something into a Cabal package different from just
handing somebody the source code and telling them to run ghc --make?
Cabal can handle things for you like when your package depends on
external data
andrewcoppin:
Ivan Lazar Miljenovic wrote:
On Sat, 20 Sep 2008 23:38:16 -0700
Don Stewart [EMAIL PROTECTED] wrote:
And by now you know where which distro has it:
http://aur.archlinux.org/packages.php?ID=18343
I'm sorry, Don, but you're late... Gentoo had it last night
Hello Duncan,
Saturday, September 20, 2008, 7:37:08 PM, you wrote:
http://haskell.org/opensparc/
the page says that you still search for a student
how community server may be used to measure performance? i'm
interested in doing some benchmarks but afaiu this needs exclusive
access for some
Excerpts from Rafal Kolanski's message of Sun Sep 21 07:28:37 -0500 2008:
The best I can find is withImageSurfaceFromPNG, but I can't
make it work.
Why not? Seems to me all you need to do is:
withImageSurfaceFromPNG blah.png $ \surface - do
...
Lots of code is written this way (create a
Austin Seipp wrote:
Excerpts from Rafal Kolanski's message of Sun Sep 21 07:28:37 -0500 2008:
The best I can find is withImageSurfaceFromPNG, but I can't
make it work.
Why not? Seems to me all you need to do is:
withImageSurfaceFromPNG blah.png $ \surface - do
...
Lots of code is
I finally came up with a solution that suits my context. For those
interested, I'm supplying it here.
Safely get a surface containing your .png image (note that the surface
has to be freed when you're done with it using surfaceFinish)
imageSurfaceCreateFromPNG :: FilePath - IO Surface
Austin Seipp wrote:
Cabal can handle things for you like when your package depends on
external data files; when cabal compiles the code it autogenerates a
module which you import that will give you the path name to where-ever
it is installed, which is nifty in case you for example are uploading
Hello Rafal,
Sunday, September 21, 2008, 5:43:14 PM, you wrote:
withImageSurfaceFromPNG file $ \png - do
w - renderWith png $ imageSurfaceGetWidth png
h - renderWith png $ imageSurfaceGetHeight png
this is very idiomatic Haskell, consider it as a sort of RAII. you may
Bulat Ziganshin wrote:
afair, Render is a super-IO monad so you can just lift any IO
operation to Render:
x - liftIO$ imageSurfaceCreateFromPNG file
You are indeed correct.
I feel really silly now, using unsafePerformIO in the IO monad. D'oh!
Thank you very much!
Rafal Kolanski.
On Sat, Sep 20, 2008 at 8:17 PM, Don Stewart [EMAIL PROTECTED] wrote:
Wonderful. Thanks Oleg, I'll be studying these on the trip up to
Victoria. See you there!
Something similar is available in binary-strict[1], although there I
have (versions of) IE_Done, IE_Cont and (additionally) IE_Fail,
Alternately, just go with a map initially with default values. Then
parse the command line args into a second map (especially if they're
all of a format like -argname argvalue). Then lookup your args file
with the command line map, and failing that the default map. Then
read the args file
And there it is!
Hugs98 is now available for installation on the iphone/ipod touch.
It is being served through the community sources at cydia, one the most
official unofficial installers for pwnaged iphone/ipods. That means that
if you have cydia already installed, if you look for hugs98 in the
Sorry. In a hurry, and I don't have a lot of time to read the
message, so if I'm offering a lot of info you already have, I
apologize. The best thing to do is to allocate either a pixmap or
Gtk.DrawingArea -- you can then use widgetGetDrawable to get the
drawing context from it and newGC to take
On Sat, Sep 20, 2008 at 11:03:41PM +0100, Duncan Coutts wrote:
On Sat, 2008-09-20 at 23:50 +0300, Roman Cheplyaka wrote:
* Duncan Coutts [EMAIL PROTECTED] [2008-09-20 16:37:08+0100]
If you want to follow the progress we will be using the existing ghc
development mailing list:
Delphi is usable. If you're a single hobbiest programmer, use whatever
gets the job done. But as far as a career goes, I'd say even Haskell has
better prospects than Delphi.
So even Haskell is better? Ouch!
Still, in a bank-handed kind of way, I guess that means Haskell isn't as
dead as
Here's a whack at regex-dna:
http://haskell.org/haskellwiki/Shootout/Parallel/RegexDNA
only modest speedup (memory bw bound?). A regex engine that could
run several machines concurrently in one pass would prob be a big win.
Tim Newsham
http://www.thenewsh.com/~newsham/
I hang out on another forum that is populated by various kinds of
computer geeks. There's a fair few programmers in there, as well as
nerds of every degree. And yet, every time I post anything written in
Haskell, everybody complains that it looks like line noise.
What do normal programmers
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Andrew Coppin wrote:
Delphi is usable. If you're a single hobbiest programmer, use whatever
gets the job done. But as far as a career goes, I'd say even Haskell has
better prospects than Delphi.
So even Haskell is better? Ouch!
Oh come on...
On Sun, 21 Sep 2008, Andrew Coppin wrote:
Actually, none of these things were mentioned. The things people have
*actually* complained to me about are:
- Haskell expressions are difficult to parse.
This is partly an it's not braces, semicolons and function(application)
complaint, though not
Hi.
Sorry if I use the mailing list for this, but in the documentation of
Control.Monad.RWS (and the other Control.Monad.* modules), the link
http://www.cse.ogi.edu/~mpj/ is broken.
Manlio Perillo
___
Haskell-Cafe mailing list
Jefferson Heard wrote:
Sorry. In a hurry, and I don't have a lot of time to read the
message, so if I'm offering a lot of info you already have, I
apologize. The best thing to do is to allocate either a pixmap or
Gtk.DrawingArea -- you can then use widgetGetDrawable to get the
drawing
Hi,
I'm a big fan of literate haskell, especially Bird-style, but there's
one behavior that I find rather annoying: the requirement that code be
preceded and followed by a blank line.
Quoth the Report:
To capture some cases where one omits an by mistake, it is an
error for a program line to
Philippa Cowderoy wrote:
On Sun, 21 Sep 2008, Andrew Coppin wrote:
Actually, none of these things were mentioned. The things people have
*actually* complained to me about are:
- Haskell expressions are difficult to parse.
This is partly an it's not braces, semicolons and
Hi Chris,
thanks for the updated example. Compiling works now. But when I try to
run it I alway get error messages like
[input0 is not in the data,input1 is not in the data]
Regards,
Martin.
Chris Eidhof schrieb:
Hey Martin,
On 19 sep 2008, at 04:14, Martin Huschenbett wrote:
I found a
Sorry if I use the mailing list for this, but in the documentation of
Control.Monad.RWS (and the other Control.Monad.* modules), the link
http://www.cse.ogi.edu/~mpj/ http://www.cse.ogi.edu/%7Empj/ is broken.
If you're trying to find the correct link, perhaps it's this:
Sean Leather ha scritto:
Sorry if I use the mailing list for this, but in the documentation
of Control.Monad.RWS (and the other Control.Monad.* modules), the link
http://www.cse.ogi.edu/~mpj/ http://www.cse.ogi.edu/%7Empj/ is broken.
If you're trying to find the correct link,
I posted a snippet of code which included the phrase
mapM_ (\(n,v) - putStrLn $ [ ++ show n ++ ] = ++ show v) (zip [0..] vs)
Don't do that, then?-)
mapM_ putStrLn $
map (\(n,v) - [ ++ show n ++ ] = ++ show v)
(zip [0..] vs)
-
mapM_ putStrLn $
map (\(n,v) - [ ++ show n ++ ]
3. Pandoc, via markdown, is a very interesting alternative to latex.
Right now you can write a block of code like this:
~~~
fact :: Integer - Integer
fact 0 = 1
fact n = n * fact (n-1)
~~~
except that that won't work, precisely because you must have a blank
line before and after
Andrew Coppin wrote:
Idiomatic Haskell seems to consist *only* of single-letter variable
names. When did you last see a pattern like (customer:customers)? No,
it'd be (c:cs), which isn't very self-documenting. Ditto for type
variables by the way. (Map k v, anyone?) It also seems to be
I read from many reviews and shootouts that cell phones sold in Japan
are more diverse, advanced, and user-friendly than cell phones sold in
the US.
So I bought one, but to my dismay, both the offline manual and the
on-screen menu are line noise.
Then I found a web dictionary to translate
On Sun, Sep 21, 2008 at 4:02 PM, Sterling Clover [EMAIL PROTECTED] wrote:
Alternately, just go with a map initially with default values. Then parse
the command line args into a second map (especially if they're all of a
format like -argname argvalue). Then lookup your args file with the command
I'm not a Haskell expert but here the solution to your problem that I can
think of.
import Data.List
prettyStr :: Int - String - IO ()
prettyStr maxlen str = do
putStr (\ ++ head brokenStr)
mapM_ (\str - putStr (\\\n\\ ++ str)) (tail brokenStr)
putStr \\n
where brokenStr = map
Erlang's equivalent of [m..n] is lists:seq(M, N),
which is currently defined to raise an exception when N M.
In particular, lists:seq(1, N) returns a list of length N
when N 0, but not when N = 0.
I'm currently arguing that lists:seq(1, 0) should be [],
not an exception. Oddly enough, I'm
G'day all.
Quoting Richard A. O'Keefe [EMAIL PROTECTED]:
I'm currently arguing that lists:seq(1, 0) should be [],
not an exception. Oddly enough, I'm being beaten over the
head with Haskell, of all things.
[...]
Does anyone remember why the definition of enumFromTo is the way it is?
I
Ed, thanks for your code. However,
I need to use something that fits
inside the whole pretty-print engine.
I would like to call parseModule
in some string of Haskell code and
get it nicely typed, with those big
strings inside.
Best,
Maurício
I'm not a Haskell expert but here the solution to
A quick glance at the code reveals that there's an instance of Pretty
like such:
instance Pretty HsLiteral where
pretty (HsInt i)= integer i
pretty (HsChar c) = text (show c)
pretty (HsString s) = text (show s)
pretty (HsFrac r) = double
In Haskell,
The sequence enumFromTo e1 e3 is the list [e1,e1+1,e1+2,...e3].
The list is empty if e1 e3.
I like it, since it means that things like [n .. n + length m - 1]
work as expected when m is []. Or say 'map (array!) [bsearch x ..
bsearch y - 1]'.
Tangent: Of course, I would prefer
Andrew Coppin wrote:
I hang out on another forum that is populated by various kinds of
computer geeks. There's a fair few programmers in there, as well as
nerds of every degree. And yet, every time I post anything written in
Haskell, everybody complains that it looks like line noise.
On Sun, Sep 21, 2008 at 7:49 PM, wren ng thornton [EMAIL PROTECTED] wrote:
We inherited our use of spaces for function application from Lisp and
friends, so foo bar baz looks perfectly natural to functionalists. But to
those used to seeing foo(bar, baz) the meaning attached to the spaces is
Paulo Tanimoto wrote:
[1] I don't think it's that common to add a by accident.
By intention, probably. But by accident it is a lot more common than you
might think. Accidents like corrupting the linebreaks or line wrapping
in a file are quite prevalent when exchanging files across different
[EMAIL PROTECTED] wrote:
Having said that, I don't know of a good reason why [5,5..5] is an
infinte list of 5's.
I'm sure you know *why* it's an infinite list[1], but as for why that's
useful I can't say. It has the feel of a bug in implementation, though
it is ...consistent.
As for the
G'day.
Quoting wren ng thornton [EMAIL PROTECTED]:
I'm sure you know *why* it's an infinite list[1], but as for why that's
useful I can't say. It has the feel of a bug in implementation, though
it is ...consistent.
Right. I have no problem with [5,5..5] being logically an anamorphism,
but
Hi John,
On Sun, Sep 21, 2008 at 3:33 PM, John MacFarlane [EMAIL PROTECTED] wrote:
Note: I've changed pandoc in the repository so that it no longer
shows these blank lines. The next point release will incorporate this
change, making it easier to use pandoc for literate haskell. Note also
that
Hello Wren,
On Sun, Sep 21, 2008 at 10:02 PM, wren ng thornton [EMAIL PROTECTED] wrote:
By intention, probably. But by accident it is a lot more common than you
might think. Accidents like corrupting the linebreaks or line wrapping in a
file are quite prevalent when exchanging files across
Quoth Andrew Coppin [EMAIL PROTECTED]:
...
| As one experienced C++ programmer put it, there is no clear flow from
| left to right or right to left. Personally I found that a little ironic
| comming from the language that gave us
|
| while (*x++ = *y++) { }
|
| which is every bit as
Thanks to those guys who've submitted parallel programs to the language
benchmarks game, we're climbing up the rankings, now in 3rd, and ahead
of C :)
http://shootout.alioth.debian.org/u64q/benchmark.php?test=alllang=all
Just one or two more parallel programs required...
Submit them here,
48 matches
Mail list logo
