Re: [Haskell-cafe] iPhone/Android and Haskell [Was: Embedded funcional programming?]
Darrin Chandler wrote: On Sat, Apr 17, 2010 at 08:21:06PM -0700, Jeffrey Scofield wrote: As a side comment, I haven't noticed any reaction in the Haskell/iPhone community about Apple's recent policy change. I've seen some reaction in other language communities, and I'm sure you can imagine what it's like. Understandable sentiments, but not very productive. I recently purchased an Android phone and spent a little time looking around to see if Haskellers were doing anything there, but no luck so far. Has anyone here done anything with Android? I've done a simple app in Java, and some experiments with JRuby. I've not done any thing Android with Haskell, but would love to give it a shot. However, I don't know where to begin. James -- Neurogami - Smart application development http://www.neurogami.com ja...@neurogami.com ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] http://trac.haskell.org down?
Been trying to reach http://trac.haskell.org for most of the morning, but nothing comes up. Seems I'm not alone: http://downforeveryoneorjustme.com/http://trac.haskell.org James -- Neurogami - Smart application development http://www.neurogami.com ja...@neurogami.com ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Cannot rebuild GHC 6.12.1 due to Cabal type conflict
Hey all. I recently wanted to rebuild GHC 6.12.1 from source (from a downloaded tarball). After the first install from that source I went and updated Cabal (from a tarball grabbed from Hackage). When I now try to do a rebuild of GHC, I get this error compiler/main/Packages.lhs:233:63: Couldn't match expected type `InstalledPackageInfo_ String' against inferred type `Cabal-1.8.0.2:Distribution.InstalledPackageInfo.InstalledPackageInfo_ m' Expected type: [InstalledPackageInfo_ String] Inferred type: [Cabal-1.8.0.2:Distribution.InstalledPackageInfo.InstalledPackageInfo_ m] In the second argument of `map', namely `conf' In the first argument of `return', namely `(map installedPackageInfoToPackageConfig conf)' make[1]: *** [compiler/stage1/build/Packages.o] Error 1 make[1]: *** Waiting for unfinished jobs make: *** [all] Error 2 (also here: http://hpaste.org/fastcgi/hpaste.fcgi/view?id=16380#a16380) I'm running the build like this: make distclean sh boot ./configure --enable-shared make -j 2 but (I'm guessing) it's looking at the already-installed Cabal libs and not liking what it's getting. Any ideas on how to get past this? Thanks, James Britt -- www.jamesbritt.com - Playing with Better Toys www.ruby-doc.org - Ruby Help Documentation www.rubystuff.com- The Ruby Store for Ruby Stuff www.neurogami.com- Smart application development ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Howto start a bigger project
Günther Schmidt wrote: Hi all, I'm stuck with a problem where I need serious help from other haskellers, in particular those that participate here on this list. It's a rather big project and I will need to set it up in an organized way, something with a blog, web page or other means. I tried to solve it by myself while asking the occasional question here but that turned out to be ineefective. The problem as such is certainly of interest for just about any programmer who is using Haskell for real world programming too. In short, to get started I'd appreciate some tips how to set this up. Create a project on github.com. It makes it dead easy for people to try out code and submit patches. Do enough work so that the code is useful, even if the implementation is crap. In fact, a crappy implementation may be a good thing; it makes it easier for people to find something to contribute. And then they feel a part of the project. Version 0.0.1 has to work right out of the box, be easy to install, be stupid obvious to use, and have non-zero value. Promises mean nothing. So, in practice, you need to start a really small project that could maybe become big but doesn't have to in order to be valuable right now. I've ended up as a committer on more than a few projects because the code solved a real problem in a simple and good enough way that I did not feel the need to go roll my own. And when I encountered a bug or wanted a feature, it was easy to contribute. But, key to all this, is getting people to feel they have a vested interest in the project succeeding, and that can be tricky. James -- Neurogami - Smart application development http://www.neurogami.com ja...@neurogami.com ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] killer app sought
Mark Wotton wrote: Hi, I've been writing a little binding from Ruby to Haskell called Hubris (http://github.com/mwotton/Hubris) which I think has some potential both for making Haskell web apps easier to write, and also for bringing the more adventurous Ruby programmers into the Haskell community. Code-wise it's coming along nicely, and once 6.12 is out it'll run without modifications at least on Linux (remains to be seen how long it'll take to get the Mac patches into shape). My real problem is marketing: I need a killer app that shows it's easy either to 1. wrap a kickarse Haskell library in a convenient Ruby web app shell 2. speed up a poorly performing Ruby web app I've been badgering the Ruby guys in Sydney that I know on the second point, but either none of them have performance problems, or none of them want to admit it. Yeah, that can happen with some Rubyists. ;) The first is entirely possible - if you only attack the subset of problems where your runtime is dominated by the database and network latency, language performance is moot. Conversely, if that's your worldview, the other problems that could be attacked won't ever come to mind (to monstrously abuse the Sapir-Whorf hypothesis). So, I'm asking you guys. What are some really nice Haskell libraries or apps that could benefit from being shown off in one of the plethora of slick, mature web frameworks that exist in Ruby? Manuel Chakravarty suggested something with vector operations in order to take advantage of his 'accelerate' library (once it gets a GPU backend, of course), and more generally, something taking advantage of Haskell's support for multicore would be cool. (The standard edition of Ruby is still unicore, I believe.) I've been trying to think of a nice back-end app to run via a Ramaze Web front end, to combine the best of Ruby Web dev with the speed and elegance of Haskell. As mentioned, something that demonstrated multi-core-ability out of the box would be sweet. Some thoughts came to mind on image or audio manipulation, though details escape me.Or maybe text analysis. Showing that using Haskell is faster than using Ruby would be nice, but unimpressive, insomuch as people can already do that with C. So, a good example might also play off of the benefit of writing in Haskell instead of C. James Britt -- Neurogami - Smart application development http://www.neurogami.com ja...@neurogami.com ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] INVITATION
Haskell Hall wrote: Haskell Hall is up and running. Haskell Hall is a mailing list, a forum, where you can discuss Haskell, functional programming and anything related, freely and openly with fellow enthusiasts. We welcome people of all abilities and know-how. So, if you fancy a change from what you get on Haskell Cafe send an email to [EMAIL PROTECTED] with the word subscribe in the subject field.The first 10 members will have access to the wine cellar. :-) How does or will Haskell Hall differ? I.e., why would I want to join another list? James ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Re: HApps API Documentation?
Martin Lütke wrote: James Britt james at neurogami.com writes: Are there alternative sites for HAppS API docs? There are two links on http://happs.org/#documentation but both give File not found! messages. Thanks, James Just compile your one version from the HAppS source. Use runghc Setup.hs haddock. OK, I can give that a shot. I'm still curious about my original question, though. Are there alternative online API docs for Happs? You do have have haddock installed, havent you? I didn't. I'm grabbing Alex from darcs now. James ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] HApps API Documentation?
Are there alternative sites for HAppS API docs? There are two links on http://happs.org/#documentation but both give File not found! messages. Thanks, James ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Maintaining the community
Donald Bruce Stewart wrote: As we sit here riding the Haskell wave: http://www.cse.unsw.edu.au/~dons/tmp/cafe.png with nearly 2000 (!) people reading haskell-cafe@, perhaps its time to think some more about how to build and maintain this lovely Haskell community we have. Just yesterday I received an email: I posted it to Haskell-Cafe and received loads of brilliant responses. Wow, those guys are awesome. I'm definitely going to learn Haskell now. Which is *exactly* the kind of (view of the) community we want to build and encourage, so we can keep the Haskell project growing into the future. Hear, hear. I'm a Haskell newbie. I've not posted much, but my copy of The Haskell School of Expression just arrived from Amazon, and I'm stoked. I think the main thing we need to remember is to help train new experts in the community, to be fluent in the culture, ensuring that expertise and a knowledge of the culture diffuses through the new people arriving. All important. I've spent a fair amount of time in the Ruby community. I got started on Ruby around 2001, and found the community welcoming and helpful, even when I was asking what were likely many dopey questions. The general climate was sufficient to make me want to be more involved; I went and started ruby-doc.org to do my share to help the community grow, and tried to stay active on Ruby lists to help others as I had been helped. This was quite different from my experiences when learning other languages. To be fair, I don't really recall to what extent I was using Usenet and discussion groups when learning Perl, PHP, or Java, but I don't think there was the same emphasis on niceness and the promotion of an explicit community culture. I think Haskell has a reputation for being hard, of being a dense, academic, egghead language. In short, it's scary. The more people who try it who can report good responses from the community and code success stories the more people there will be who can help each batch of newcomers. Thanks, James Britt ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
