- Libraries - Haskell.org

Proposal: System.Timeout module for base (Trac #980)
by Peter Simons 02 Mar '07

02 Mar '07

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Re: Control.Monad.Cont documentation
by Andriy Palamarchuk 01 Mar '07

01 Mar '07

Added an example for ContT. Updated source and Haddock output. Andriy --- Andriy Palamarchuk <apa3a(a)yahoo.com> wrote: > Documentation for the Continuation monad. Right now > this module does not have any haddock comments. > > Per Jeff Newbern's gracious permission included > relevant information from his cool tutorial "All > About > Monads" http://www.nomaware.com/monads/, created a > couple of examples. > > The source of the module and haddock output for it > are > attached to the ticket: > http://hackage.haskell.org/trac/ghc/ticket/1169 > > Here is the generated haddock output: > http://hackage.haskell.org/trac/ghc/attachment/ticket/1169/Control-Monad-Co… > > Deadline for the proposal - 2 weeks. > > Questions, comments, suggestions? > Andriy Palamarchuk > > > > ____________________________________________________________________________________ > Yahoo! Music Unlimited > Access over 1 million songs. > http://music.yahoo.com/unlimited > ____________________________________________________________________________________ We won't tell. Get more on shows you hate to love (and love to hate): Yahoo! TV's Guilty Pleasures list. http://tv.yahoo.com/collections/265

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ANNOUNCE: Gtk2Hs version 0.9.11 released
by Duncan Coutts 28 Feb '07

28 Feb '07

Gtk2Hs - A GUI Library for Haskell based on Gtk+ Version 0.9.11 is now available from: http://haskell.org/gtk2hs/download/ The source tarball and an installer for Windows are available. Packages are available for Gentoo and FreeBSD. Packages for various other platforms should become available soon (hopefully including Fedora, Debian and Darwin). Changes since 0.9.10: * works with GHC 6.6 and Gtk+ 2.10.x * new typed tree/list widget API * new OpenGL widget added * new cairo SVG package (for rendering SVG images on cairo surfaces) * new implementation of the Graphics.SOE API * new glade tutorial * many more demo programs (clock, graph, traffic congestion sim, fonts, noughts & crosses, opengl, svg and updated profile viewer and other tree/list demos) * much smaller binaries (thanks to the ghc 'split objs' feature) * many bugs fixed * new functions for working with the threaded RTS * various minor documentation improvements Gtk2Hs feature highlights: * automatic memory management * Unicode support * nearly full coverage of Gtk+ 2.8 API * support for several additional Gtk+/Gnome modules: * Glade visual GUI builder * cairo vector graphics library * SVG rendering for cairo * OpenGL extension (works with HOpenGL) * GConf, Gnome's system for storing app preferences * SourceView, code editor widget with syntax highlighting * the Mozilla browser rendering engine in a widget * an implementation of the Graphics.SOE API * extensive haddock API reference documentation * multi-platform support with native look * LGPL licence Platforms and requirements: * builds from source on Linux, Windows, MacOS X, FreeBSD and Solaris * builds with GHC 6.2 - 6.6 * works with Gtk+ version 2.0 through to 2.10 * SVG support requires librsvg version 2.16 or later Please report all problems to gtk2hs-devel(a)sourceforge.net Contributions and feedback are also most welcome. Windows release notes: The installer expects GHC 6.6 or 6.4.2. Support for GHCi is only available with GHC-6.6. Profiling libs are included (though you do not need to install them if you want to save disk space) The installer now comes bundled with Gtk+ itself so there's no need to download it separately. Hopefully this should also make the installation process a bit more reliable if only by reducing the number of configuration combinations. The windows build does not include the svgcairo, sourceview, gconf or mozembed packages since they introduce rather a large number of dependencies and would make the installer a much bigger download. Duncan (on behalf of the Gtk2Hs team)

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Re: hasktags - small patch
by Claus Reinke 23 Feb '07

23 Feb '07

[cc-ed to libraries, as they seem to be more appropriate for cabal topics] > Some time ago I've tweaked cabal to start ghci with package options > given in the .cabal file. > > Perhaps it might be useful for someone: yes, i'd like to see something like this in cabal. cf also http://www.mail-archive.com/glasgow-haskell-users@haskell.org/msg11101.html claus > module Main where > import Distribution.Simple > import Distribution.Simple.Configure > import Distribution.Simple.LocalBuildInfo > import System > import System.Process > import System.Exit > import Monad > > main= do > args <- getArgs -- check args to launch ghci > when (length args > 0) $ do > when ((args!!0) == "ghci") $ do > lbi <- getPersistBuildConfig > let packageArgs = (concat.concat) [ [" -package ", showPackageId pkg] | pkg <- packageDeps lbi ] > system("ghci " ++ packageArgs) > exitWith ExitSuccess > defaultMain -- fallback to defaultMain > > Then you can use ./setup ghci to start ghci > It is incomplete but should work for default packages.. > > Marc > _______________________________________________ > Glasgow-haskell-users mailing list > Glasgow-haskell-users(a)haskell.org > http://www.haskell.org/mailman/listinfo/glasgow-haskell-users

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Re: [Haskell] Haskell Xlib bindings
by Sven Panne 19 Feb '07

19 Feb '07

[ moved to libraries list ] Am Montag, 5. Februar 2007 00:15 schrieb Duncan Coutts: > [...] Perhaps these days binding xcb might be the way to go for low level > X11 stuff. I had a look and XCB, and it looks quite promising as a "better Xlib". What is not so clear to me is: * X.Org seems to use it as a basis for their Xlib implementation. Is this correct? * What about XFree86? * What about X11 implementations on *BSD, Solaris, AIX, HP-UX, etc.? * Is XCB 100% feature-complete compared to Xlib? I guess that XCB is not widespread enough yet to drop the X11 package now, but I'd like to hear what others think. OTOH, a Haskell binding for XCB can probably be generated automatically to a large degree via XSLT, if I understand things correctly, which would be a big plus. Cheers, S.

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Proposal: System.Timeout module for base
by Peter Simons 19 Feb '07

19 Feb '07

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time package needs a tiny README file
by Bryan O'Sullivan 18 Feb '07

18 Feb '07

Hello, Ashley - There's a bug open against ghc 6.6 regarding the time package, which notes that it doesn't install HsTime.h or HsTimeConfig.h when being installed. If one already has a copy of the time darcs repo, it's still not obvious how to build it. Please add a README with something like the following instructions, as a bit of Googling shows that I am not the first person to have spent a few minutes confused by this: To build the time package, you must have GNU autoconf installed. Run "autoreconf" before the usual Cabal build steps (configure/build/install). There is no need to run the "configure" script; the Cabal build process will do this for you. Thank you for your help, <b

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Where prelude alternatives/ classes and types to get values?
by Marc Weber 17 Feb '07

17 Feb '07

The prelude has some issues such like Map.empty, Sequnce.empty, Set.empty It would be much nicer to use class Empty where empty :: a except of more complicated error messages (especially for newbies) Are there already some proposals? Is this the right place to discuss these topics? I got this idea because I'm currently learning more about webfunctions. Some states (eg counters) are implemented using IORefs. I could imagine a class class ModifyIO m c where modify :: IORef a -> ( a -> a ) -> m c data Old a data New a data OldNew a = OldNew a a; modify f = do a <- readIORef io let new = f a writeIORef io new return $ f old new instance ModifyIO IO (Old a) = modify io f = modify io (\old _ -> Old old) instance ModifyIO IO (New a) = modify io f = modify io (\_ new -> New new) instance ModifyIO IO (OldNew a) = modify io f = modify io OldNew which would lead to code such as ... = do (New count) <- modify ioCounterRef (+1) ... compared to ... = do count <- readIORef ioCounterRef let count = count + 1 writeIORef ioCounterRef count ... Do you think this style is insane? Marc Weber

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Submitting a darcs patch
by Rob Hoelz 15 Feb '07

15 Feb '07

I just made some small changes (I figure smaller would be better for my first patch, and I'm also new to Haskell) to the Xlib bindings, adding support for property events and implementing an XGetAtomName function. Seeing as I'm new to darcs, how do I submit a patch and to whom do I submit it? I've already made the patch with darcs record. Thanks, Rob Hoelz

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Compiling Haskell X11 bindings
by Rob Hoelz 14 Feb '07

14 Feb '07

Hello everyone, I've been trying to improve the Haskell X11 bindings so they're more usable. So I tried to compile with my changes, and here's the output: rob@TheRing ~/programming/src/darcs/X11 $ runhaskell Setup.hs configure <A bunch of output that's ok> configure: creating ./config.status config.status: creating config.mk config.status: creating X11.buildinfo config.status: error: cannot find input file: include/HsX11Config.h.in How can I remedy this? I'm looking forward to seeing my changes in action! Thanks, Rob Hoelz

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