> "Jeff" == Jeff Wheeler writes:
Jeff> I installed Gtk2Hs on a similar machine earlier tonight,
Jeff> with much success, even with Yi.
Jeff> I did not use MacPorts, and instead followed the
Jeff> instructions on the HaskellWiki [1] under "Using the GTK+ OS
Jeff> X Framewo
Vasili I. Galchin wrote:
> vigalc...@ubuntu:~/FTP$ darcs get http://code.haskell.org/leksah
> Invalid repository: http://code.haskell.org/leksah
>
> darcs failed: Failed to download URL
> http://code.haskell.org/leksah/_darcs/inventory : HTTP error (404?)
>
> I did a google on "HTTP 404" => not
On Sun, 2009-04-05 at 07:12 +0200, Bertram Felgenhauer wrote:
> This looks like the quartz backend was disabled in the cairo C library,
> not like a gtk2hs problem. I don't know how ports work, but
>
> http://trac.macports.org/browser/trunk/dports/graphics/cairo/Portfile
>
> defines a 'quartz'
vigalc...@ubuntu:~/FTP$ darcs get http://code.haskell.org/leksah
Invalid repository: http://code.haskell.org/leksah
darcs failed: Failed to download URL
http://code.haskell.org/leksah/_darcs/inventory : HTTP error (404?)
I did a google on "HTTP 404" => not found why?
Kind regards, Vasili
Jeff Heard wrote:
> I tried to get yi to run on my Mac earlier and I get the following errors:
>
> dyld: lazy symbol binding failed: Symbol not found:
> _cairo_quartz_font_face_create_for_atsu_font_id
> Referenced from: /opt/local/lib/libpangocairo-1.0.0.dylib
> Expected in: /opt/local/lib/lib
---
Haskell Weekly News
http://sequence.complete.org/hwn/20090405
Issue 112 - April 05, 2009
---
Welcome to issue 112 of HWN, a newsletter covering dev
Thanks, guys! This one works perfectly.
I was monkeying with similar logic but wasn't sure about syntax.
Michael
--- On Sat, 4/4/09, Andrew Wagner wrote:
From: Andrew Wagner
Subject: Re: [Haskell-cafe] Combining sequences
To: "michael rice"
Cc: haskell-cafe@haskell.org
Date: Saturday, Apri
Henning Thielemann writes:
> On Wed, 1 Apr 2009, Don Stewart wrote:
>
>> bugfact:
>>> Rumor goes that this is very difficult to do with Darcs. Is this correct?
>>
>>darcs unpull
>
> Be careful - you cannot revert this! If you want to unpull patches,
> that were not distributed so far, you sho
Here's a pretty straightforward approach:
combine [] ys = ys
combine xs [] = xs
combine (x:xs) (y:ys) | x <= y = x : combine xs (y:ys)
| otherwise = y : combine (x:xs) ys
On Sat, Apr 4, 2009 at 8:40 PM, michael rice wrote:
> Is there a simple way to combine two
Is there a simple way to combine two sequences that are in ascending order into
a single sequence that's also in ascending order? An example would be the
squares [1,4,9,16,25..] combined with the cubes [1,8,27,64,125..] to form
[1,1,4,8,9,16,25,27..].
Michael
_
On Thu, 2 Apr 2009, Bjorn Buckwalter wrote:
I'm pleased to announce the initial release of the Haskell fad
library, developed by Barak A. Pearlmutter and Jeffrey Mark Siskind.
Fad provides Forward Automatic Differentiation (AD) for functions
polymorphic over instances of 'Num'. There have been
On Fri, 3 Apr 2009, Jeff Heard wrote:
Jurgen... I have one more question, or rather request... I'm running
under Ubuntu, and I get inconsistencies with packages that I build and
install via Leksah not showing up when I configure other packages that
depend on them. Then I notice that you're us
On Wed, 1 Apr 2009, Don Stewart wrote:
bugfact:
Rumor goes that this is very difficult to do with Darcs. Is this correct?
darcs unpull
Be careful - you cannot revert this! If you want to unpull patches, that
were not distributed so far, you should better call 'darcs get' to get a
copy
brad clawsie wrote:
> does anyone have a .editrc they can provide that allows ghci to be used
> on freebsd?
>
> i'm not looking for anything fancy, just backspace not being broken etc
You could try to cabal install ghci-haskeline and see if that works better.
Cheers
Ben
cristiano.paris:
> On Sat, Apr 4, 2009 at 10:21 PM, Bulat Ziganshin
> wrote:
> > Hello Cristiano,
> > ...
> > there was a large thread a few months ago and many peoples voted for
> > excluding any OS-specific packages at all since this decreases
> > portability of code developed by Hoogle users :)
On Sat, Apr 4, 2009 at 10:21 PM, Bulat Ziganshin
wrote:
> Hello Cristiano,
> ...
> there was a large thread a few months ago and many peoples voted for
> excluding any OS-specific packages at all since this decreases
> portability of code developed by Hoogle users :)))
Nice shot :D
So how do I f
Hello Cristiano,
Sunday, April 5, 2009, 12:05:02 AM, you wrote:
> Is it me or the above package is not included in Hoogle?
afair, Neil, being windows user, includes only packages available for
his own system
there was a large thread a few months ago and many peoples voted for
excluding any OS-s
I tried to get yi to run on my Mac earlier and I get the following errors:
dyld: lazy symbol binding failed: Symbol not found:
_cairo_quartz_font_face_create_for_atsu_font_id
Referenced from: /opt/local/lib/libpangocairo-1.0.0.dylib
Expected in: /opt/local/lib/libcairo.2.dylib
dyld: Symbol no
Is it me or the above package is not included in Hoogle?
Cristiano
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On Sat, Apr 4, 2009 at 12:15 PM, Jason Dagit wrote:
> I think people might be able to help you, but I think we need the
> exact error message. Unfortunately, "won't link" is a bit too vague
> to make any suggestions.
Nevermind my message. I see you sent the error in a different thread.
Jason
Hi Jeff,
On Sat, Apr 4, 2009 at 10:57 AM, Jeff Heard wrote:
> The instructions in the leksah manuals seem to work for doing a
> straight-up ports install of gtk2hs. I've never managed to get it to
> install without compiling manually, but this worked
>
> $ sudo port install gtk2 cairo librsvg li
I tried installing leskah on OS X using the x11 version of gtk2hs
(because I use gtkglext a lot in my work, and need it, therefore the
quartz build won't work for me) I get these errors. Is this leksah
specific or is this a more general problem with gtk2hs?
Linking dist/build/leksah/leksah ...
l
The instructions in the leksah manuals seem to work for doing a
straight-up ports install of gtk2hs. I've never managed to get it to
install without compiling manually, but this worked
$ sudo port install gtk2 cairo librsvg libglade2 gtksourceview2
gtkglext gtk-chtheme gtk2-clearlooks
$ sudo port
Thanks Claus,
Indeed the problem was that I was using the Strict state monad, with
lazy state it does the right thing when run through testP. I will try
and get back to this thread if I manage the derivation which "proves"
(or at least supports) that the two versions are equivalent.
2009/4/4
Copied there.
On Sat, Apr 4, 2009 at 1:30 PM, Thomas Hartman wrote:
> Johannes,
>
> You'll have a better response if you post to the happs list.
>
> Have you had a look at tutorial.happstack.com?
>
> Thomas.
>
> 2009/4/4 Johannes Waldmann :
> > Hi, I'm thinking of using happstack for a simple
Johannes,
You'll have a better response if you post to the happs list.
Have you had a look at tutorial.happstack.com?
Thomas.
2009/4/4 Johannes Waldmann :
> Hi, I'm thinking of using happstack for a simple
> online registration system. [ Customer gives
> Name and Address and registers for
Indeed. I recommend upgrading to GHC 6.10.2, all the weird floating point
FFI bugs I encountered with GHC 6.10.1 seem to be resolved now.
On Sat, Apr 4, 2009 at 12:10 PM, Bulat Ziganshin
wrote:
> Hello wren,
>
> Saturday, April 4, 2009, 2:51:39 AM, you wrote:
>
> > On GHC 6.10 the use of -fvia-C h
Indeed. I recommend upgrading to GHC 6.10.2, all the weird floating point
FFI bugs I encountered with GHC 6.10.1 seem to be resolved now.
On Sat, Apr 4, 2009 at 12:10 PM, Bulat Ziganshin
wrote:
> Hello wren,
>
> Saturday, April 4, 2009, 2:51:39 AM, you wrote:
>
> > On GHC 6.10 the use of -fvia-C h
Indeed. I recommend upgrading to GHC 6.10.2, all the weird floating point
FFI bugs I encountered with GHC 6.10.1 seem to be resolved now.
On Sat, Apr 4, 2009 at 12:10 PM, Bulat Ziganshin
wrote:
> Hello wren,
>
> Saturday, April 4, 2009, 2:51:39 AM, you wrote:
>
> > On GHC 6.10 the use of -fvia-C h
Hi
> You can always do
>
> {-# INLINE short #-}
> short =
> C.veryLongFunctionNameThatIReallyDoNotWantToTypeOutEveryTimeIUseIt
The INLINE pragma is not necessary, if an optimising compiler fails to
inline that then it's not very good.
However, you might want to consider the (evil) monomorphism
r
Am Samstag 04 April 2009 17:33:55 schrieb Manlio Perillo:
> Hi.
>
> Haskell 98 allows import alias:
> import qualified VeryLongModuleName as C
>
> however it does not allow aliasing for imported names
> import NormalModule (veryLongFunctionName as C)
>
>
> what is the rational?
> IMHO thi
On Saturday 04 April 2009, Manlio Perillo wrote:
> Hi.
>
> Haskell 98 allows import alias:
> import qualified VeryLongModuleName as C
>
> however it does not allow aliasing for imported names
> import NormalModule (veryLongFunctionName as C)
>
>
> what is the rational?
> IMHO this can be
Hi.
Haskell 98 allows import alias:
import qualified VeryLongModuleName as C
however it does not allow aliasing for imported names
import NormalModule (veryLongFunctionName as C)
what is the rational?
IMHO this can be very useful in some cases.
Thanks Manlio
___
Dmitry V'yal schrieb:
Greetings. I'm trying to render some glyphs from ttf font to svg
image using gtk2hs cairo binding. Since I can find nothing appropriate
in gtk2hs API, I decided to draw outlines with bezier curves myself.
But how to get them out of font? As far as I know, freetype lib
Hi, I'm thinking of using happstack for a simple
online registration system. [ Customer gives
Name and Address and registers for certain workshops.
Then the app server should just produce a bill.
(Payment is handled through a different channel.)
The "store owner" needs to get some overview of
regis
A Haskell binding to Freetype2 is indeed missing. Would be nice to have.
On Sat, Apr 4, 2009 at 4:08 PM, Jeff Heard wrote:
> Yes, the FTGL library, but it uses FTGL on the backend and not
> freetype directly. You might be able to get the flyph shapes from
> Pango...
>
> On Sat, Apr 4, 2009 at 12:
Yes, the FTGL library, but it uses FTGL on the backend and not
freetype directly. You might be able to get the flyph shapes from
Pango...
On Sat, Apr 4, 2009 at 12:59 PM, Dmitry V'yal wrote:
> Greetings. I'm trying to render some glyphs from ttf font to svg
> image using gtk2hs cairo bind
Hi Jeremy,
thanks for that.
I had come across it before but I think I'd prefer a more light-weight
approach.
Günther
Jeremy Shaw schrieb:
> At Sat, 04 Apr 2009 15:40:56 +0200,
> Günther Schmidt wrote:
>
>> But I hope to be able to use an DSL from which I can automatically
>> generate SQL-St
On Saturday 04 April 2009 14:02:48 Peter Verswyvelen wrote:
> > On Sat, Apr 4, 2009 at 12:42 PM, Jon Harrop wrote:
> >> For comparison:
> >>
> >> Haskell hash table: 44s
> >> Haskell map: 7s
> >> F# hash table: 0.7s
>
> So how does F# IntMap version compares to Haskell's IntMap?
F#
Greetings. I'm trying to render some glyphs from ttf font to svg image using
gtk2hs cairo binding. Since I can find nothing appropriate in gtk2hs API, I
decided to draw outlines with bezier curves myself. But how to get them out of
font? As far as I know, freetype library is capable of extract
At Sat, 04 Apr 2009 15:40:56 +0200,
Günther Schmidt wrote:
> But I hope to be able to use an DSL from which I can automatically
> generate SQL-Strings instead of writing the SQL statements literally.
>
> Has anyone else taken a similar approach?
HaskellDB has an DSL for generating SQL strings.
Hi,
I tried to solve some large data processing solely in Haskell so I could
avoid lots of eventually very long and complex SQL statements.
Unfortunately, as was to be expected, that approach doesn't scale.
So I do need an SQL backend.
But I hope to be able to use an DSL from which I can aut
So how does F# IntMap version compares to Haskell's IntMap?
On Sat, Apr 4, 2009 at 2:58 PM, Peter Verswyvelen wrote:
> On Sat, Apr 4, 2009 at 12:42 PM, Jon Harrop wrote:
>
>> For comparison:
>>
>> Haskell hash table: 44s
>> Haskell map: 7s
>> F# hash table: 0.7s
>
>
> Ouch! That's
On Sat, Apr 4, 2009 at 12:42 PM, Jon Harrop wrote:
> For comparison:
>
> Haskell hash table: 44s
> Haskell map: 7s
> F# hash table: 0.7s
Ouch! That's pretty insane.
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On Thursday 26 March 2009 15:39:12 Manlio Perillo wrote:
> I also tried with Data.HashTable:
> http://hpaste.org/fastcgi/hpaste.fcgi/view?id=2902
>
> but memory usage is 703 MB, and execution time is about 4.5 times slower!
This is due to a perf bug in GHC's GC implementation that causes it to
tr
takeListSt' = evalState . foldr k (return []) . map (State . splitAt)
where k m m'= cutNull $ do x<-m; xs<-m'; return (x:xs)
cutNull m = do s<-get; if null s then return [] else m
|Not only is ths not that elegant anymore,
As I was saying, sequence/mapM with early cutout i
Hello wren,
Saturday, April 4, 2009, 2:51:39 AM, you wrote:
> On GHC 6.10 the use of -fvia-C had to be disabled because it conflicts
> with the FFI (version 0.12.0.0 still used it, which is fine on GHC 6.8).
> I'm still investigating the use of -fasm and getting proper benchmarking
> numbers. Con
Kannan Goundan wrote:
> I'm writing a parser with Parsec. In the input language, elements of a
> sequence
> are separated by commas:
>
>[1, 2, 3]
>
> However, instead of a comma, you can also use an EOL:
>
> [1, 2
> 3]
>
> Anywhere else, EOL is considered ignorable whitespace. So it'
Kannan Goundan wrote:
I've implemented this functionality in a hand-written parser (basically a hack
that keeps track of whether the last read token was preceded by an EOL,
without making EOL itself a token). Does anybody have ideas about how to
do this with Parsec?
You can do exactly the same
> takeListSt' = evalState . foldr k (return []) . map (State . splitAt)
> where k m m'= cutNull $ do x<-m; xs<-m'; return (x:xs)
> cutNull m = do s<-get; if null s then return [] else m
Not only is ths not that elegant anymore, I think it *still* has a
bug, stack overflow again
Michael Roth wrote:
Hello list,
maybe I'm just stupid, I'm trying to do something like this:
Ciao Michael,
As an alternative solution to Creighton's:
import Control.Monad.List
foobar :: ListT IO Int
foobar = do
a <- ListT . return $ [1,2,3]
b <- ListT . return $ [4,5
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