Re: [Haskell-cafe] Re: Unable to install packages

2010-11-30 Thread Ketil Malde
Thanks for the clarification, the SICP article was something I feel I should have known, but did not. It seems to me that while there are *three* ways to install stuff: apt-get install, cabal install --global, and cabal install --user, there are just *two* ways things get installed, globally and

[Haskell-cafe] Re: Manatee Video.

2010-11-30 Thread steffen
Hi Andy, Can you please do something about the sound track? Loads of people are not able to view your video, because the used content/sound track is not available in every country... meaning youtube prohibits viewing your video. On 28 Nov., 17:30, Andy Stewart lazycat.mana...@gmail.com wrote:

Re: [Haskell-cafe] GHC 7.0.1 developer challenges

2010-11-30 Thread Ryan Ingram
On Mon, Nov 29, 2010 at 12:36 AM, Simon Peyton-Jones simo...@microsoft.com wrote: Do you have an alternative to suggest? After all, the previous situation wasn't good either. I suggest that we should be able to specify RTS options at compile/link time, or as pragmas in the Main module. --

[Haskell-cafe] Re: Bifold: a simultaneous foldr and foldl

2010-11-30 Thread Larry Evans
On 11/29/10 21:41, Noah Easterly wrote: Somebody suggested I post this here if I wanted feedback. So I was thinking about the ReverseState monad I saw mentioned on r/haskell a couple days ago, and playing around with the concept of information flowing two directions when I came up with this

Re: [Haskell-cafe] Manatee Video.

2010-11-30 Thread Andy Stewart
Hi steffen, I'm uploading new video without sound track, i will post link when i upload finish. Thanks, -- Andy steffen steffen.sier...@googlemail.com writes: Hi Andy, Can you please do something about the sound track? Loads of people are not able to view your video, because the used

[Haskell-cafe] Is there a tutorial interpreter to teach haskell?

2010-11-30 Thread Larry Evans
By tutorial interpreter, I means something like an expert system having a list of rules and than a problem which is solved by using those list of rules. The tutorial means the trace of the problem state before and after each rule is applied along with which parts of the rule are matched with

Re: [Haskell-cafe] Bifold: a simultaneous foldr and foldl

2010-11-30 Thread Noah Easterly
On Tue, Nov 30, 2010 at 9:37 AM, Larry Evans cppljev...@suddenlink.netwrote: suggested to me that bifold might be similar to the function, Q, of section 12.5 equation 1) on p. 15 of: http://www.thocp.net/biographies/papers/backus_turingaward_lecture.pdf Now Q takes just 1 argument, a

Re: [Haskell-cafe] Manatee Video.

2010-11-30 Thread Andy Stewart
steffen steffen.sier...@googlemail.com writes: Hi Andy, Can you please do something about the sound track? Loads of people are not able to view your video, because the used content/sound track is not available in every country... meaning youtube prohibits viewing your video. I will found

Re: [Haskell-cafe] GHC 7.0.1 developer challenges

2010-11-30 Thread John D. Ramsdell
On Tue, Nov 30, 2010 at 9:24 AM, Ryan Ingram ryani.s...@gmail.com wrote: I suggest that we should be able to specify RTS options at compile/link time, or as pragmas in the Main module. So if I wrote a really good, stable Haskell program, and made it available in binary form, people ten years

[Haskell-cafe] Where are all the Taiwanese Haskellers?

2010-11-30 Thread Pasqualino Titto Assini
Hello, I am going to Taiwan with my family for about five weeks (I am Italian, my wife is Taiwanese and we have two kids) and I wondered if there was any Taiwanese Haskeller that would be interested in meeting for a chat about Haskell, Life and Everything else, maybe in front of a nice cup of

[Haskell-cafe] regex libraries: matching operators (=~) and (=~~) are not methods

2010-11-30 Thread José Romildo Malaquias
Hello. When learning how to use the many regular expression libraries for Haskell, I noticed that the interface API from the regex-base package introduces several high level operations that are abstracted from the implementations (backends). This is done by means of classes. For instance, there

[Haskell-cafe] Test

2010-11-30 Thread Ian Lynagh
A1 ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Test

2010-11-30 Thread Miguel Mitrofanov
Missed. On 30 Nov 2010, at 23:47, Ian Lynagh wrote: A1 ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list

Re: [Haskell-cafe] Is there a tutorial interpreter to teach haskell?

2010-11-30 Thread Noah Easterly
On Tue, Nov 30, 2010 at 12:08 PM, Larry Evans cppljev...@suddenlink.netwrote: so now I must manually figure out what the a and b in the ap declaration correspond to in the return(:) type: m( a - b ) __ _ _

Re: [Haskell-cafe] GHC 7.0.1 developer challenges

2010-11-30 Thread Donn Cave
Quoth Ryan Ingram ryani.s...@gmail.com, I suggest that we should be able to specify RTS options at compile/link time, or as pragmas in the Main module. It would be good for me in any case if I could specify the value of an option at compile time, though I suppose you mean to specify which

Re: [Haskell-cafe] Manatee Video.

2010-11-30 Thread steffen
these links don't work either... But there is an alternative video link to youko (http://v.youku.com/ v_show/id_XMjI2MDMzODI4.html) on the hackage page which works fine. Looks interesting. All those tabs and layout makes me wonder if manatee can become a window manager of it's own. Say combining

Re: [Haskell-cafe] GHC 7.0.1 developer challenges

2010-11-30 Thread David Virebayre
2010/11/30 Ryan Ingram ryani.s...@gmail.com On Mon, Nov 29, 2010 at 12:36 AM, Simon Peyton-Jones simo...@microsoft.com wrote: Do you have an alternative to suggest? After all, the previous situation wasn't good either. I suggest that we should be able to specify RTS options at

[Haskell-cafe] ANN: HaLVM 1.0: the Haskell Lightweight Virtual Machine

2010-11-30 Thread Adam Wick
Galois, Inc. is pleased to announce the immediate release of the Haskell Lightweight Virtual Machine (or HaLVM), version 1.0. The HaLVM is a port of the GHC runtime system to the Xen hypervisor, allowing programmers to create Haskell programs that run directly on Xen's bare metal. Internally,

Re: [Haskell-cafe] Is there a tutorial interpreter to teach haskell?

2010-11-30 Thread Stephen Tetley
Andy Gill developed HERA which sounds somewhat similar to what you are asking, but I don't know that it would be particularly beginner friendly and I think it was static - i.e. the reduction rules were applied to program source code rather than within an interactive evaluation of a running

Re: [Haskell-cafe] ANN: HaLVM 1.0: the Haskell Lightweight Virtual Machine

2010-11-30 Thread Iustin Pop
On Tue, Nov 30, 2010 at 02:16:07PM -0800, Adam Wick wrote: Galois, Inc. is pleased to announce the immediate release of the Haskell Lightweight Virtual Machine (or HaLVM), version 1.0. The HaLVM is a port of the GHC runtime system to the Xen hypervisor, allowing programmers to create Haskell

Re: [Haskell-cafe] Manatee Video.

2010-11-30 Thread Andy Stewart
steffen steffen.sier...@googlemail.com writes: these links don't work either... But there is an alternative video link to youko (http://v.youku.com/ v_show/id_XMjI2MDMzODI4.html) on the hackage page which works fine. That's video is not clear, so you can't see detail of my operation. I'm

Re: [Haskell-cafe] Conditional compilation for different versions of GHC?

2010-11-30 Thread Jason Dagit
On Sat, Nov 27, 2010 at 9:59 AM, Jinjing Wang nfjinj...@gmail.com wrote: Thanks Michael, So the user should use `cabal install --flags -ghc7 package-name` to install the package, if I'm not mistaken? Will it work if the package is installed as a dependency? Will the flag environment be

Re: [Haskell-cafe] ANN: HaLVM 1.0: the Haskell Lightweight Virtual Machine

2010-11-30 Thread Jason
On Tue, Nov 30, 2010 at 02:16:07PM -0800, Adam Wick wrote: Galois, Inc. is pleased to announce the immediate release of the Haskell Lightweight Virtual Machine (or HaLVM), version 1.0. The HaLVM is a port of the GHC runtime system to the Xen hypervisor, allowing programmers to create

Re: [Haskell-cafe] GHC 7.0.1 developer challenges

2010-11-30 Thread Sterling Clover
On Tue, Nov 30, 2010 at 9:24 AM, Ryan Ingram ryani.s...@gmail.com wrote: On Mon, Nov 29, 2010 at 12:36 AM, Simon Peyton-Jones simo...@microsoft.com wrote: Do you have an alternative to suggest?  After all, the previous situation wasn't good either. I suggest that we should be able to

Re: [Haskell-cafe] Conditional compilation for different versions of GHC?

2010-11-30 Thread Thomas Schilling
I think a nicer way to solve that issue is to use Cabal's MIN_VERSION macros. 1. Add CPP to your extensions. This will cause cabal to auto-generate a file with MIN_VERSION_pkg macros for each pkg in build-depends. 2. GHC 6.12.* comes with template-haskell 2.4, so to test for that use: #ifdef

[Haskell-cafe] [ANNOUNCE] A general data-flow framework

2010-11-30 Thread Mitar
Hi! I have just published my library which provides a general data-flow framework: http://hackage.haskell.org/package/Etage Sadly it requires current GHC HEAD branch because of this: http://hackage.haskell.org/trac/ghc/ticket/1769 Short description: A general data-flow framework featuring

Re: [Haskell-cafe] Printing of asynchronous exceptions to stderr

2010-11-30 Thread Mitar
Hi! On Thu, Nov 18, 2010 at 2:19 PM, Simon Marlow marlo...@gmail.com wrote: then it isn't uninterruptible, because the timeout can interrupt it.  If you can tolerate a timeout exception, then you can tolerate other kinds of async exception too. Yes, but semantics are different. I want to

Re: [Haskell-cafe] Conditional compilation for different versions of GHC?

2010-11-30 Thread Michael Snoyman
On Wed, Dec 1, 2010 at 4:07 AM, Thomas Schilling nomin...@googlemail.com wrote: I think a nicer way to solve that issue is to use Cabal's MIN_VERSION macros.  1. Add CPP to your extensions.  This will cause cabal to auto-generate a file with MIN_VERSION_pkg macros for each pkg in

[Haskell-cafe] Most images broken on haskellwiki pages

2010-11-30 Thread Eugene Kirpichov
Hello. I looked at a couple pages of mine http://www.haskell.org/haskellwiki/Splot , http://www.haskell.org/haskellwiki/Timeplot , and at a couple of random pages http://haskell.org/haskellwiki/Special:Random - and looks like the vast majority of images are not displaying. What's wrong? Does it