[Haskell-cafe] Re: Thinking about what's missing in our library coverage

alexander.dunlap: > >          o pandoc — markdown, reStructuredText, HTML, LaTeX, ConTeXt, > > Docbook, OpenDocument, ODT, RTF, MediaWiki, groff > > No. Pandoc is too actively developed to go into the HP. It's also much > more of an end-user application than a "standard library" - it's > applica

[Haskell-cafe] Re: Thinking about what's missing in our library coverage

On Mon, Aug 3, 2009 at 4:44 PM, Don Stewart wrote: > > Following Simon M's advice, I look over the typical "batteries" > categories, using Python as input: > >    http://docs.python.org/library/index.html > > The following things were missing from the current Platform. There are many. > How would y

[Haskell-cafe] Haskell interface files: Why used? What about same data in object files?

Hi, I am trying to understand the design of the Haskell interface files. Why are they a separate file rather than having the same data in the object file generated by the compiler? (Naively, it seems to me this would work also. Am I missing something?) Thanks. Howard B. Golden Northridge, Cal

[Haskell-cafe] C2HS issues on Hackage

Hi all, I've written a Yaml library built on top of libyaml (the same C library at the core of Python's yaml library). All is well on my local system and my server; I'm currently using it in production. However, the build is failing on Hackage with the following build log: http://hackage.haskell.o

Re: [Haskell-cafe] [Haskell Cafe] Troubles with StateT and Parsec

Hi Bryan, GHC 6.10.1, Parsec 3.0.0 and type signatures are right from the code: they are actually real (except the ones with the ). I see now that it is really a better idea to use internal Parser state to collect the data I need to carry through, so in any case thank you I've sent two letters on

Re: [Haskell-cafe] Re: Proposal: TypeDirectedNameResolution

Heinrich Apfelmus schrieb: > Note that there are alternative solution for this particular problem. > For instance, a version of qualified with different semantics will do; > something like this > >import Data.List >import sometimes qualified Data.Map as Map Isn't that quite the same as

Re: [Haskell-cafe] Re: Proposal: TypeDirectedNameResolution

Heinrich Apfelmus schrieb: > Sure, overloading is useful. But to avoid headache in a polymorphic > language, I'd prefer a principled approach to it. Hence, I'm convinced > that there should be only one mechanism for overloading in Haskell; > which is type classes at the moment. > > It appears tha

Fwd: [Haskell-cafe] funct.prog. vs logic prog., practical Haskell

The middle road could be Curry , sorry, this Curry , a functional-logic language. I know that curry has gained a lot of interest from prolog programmers. There are compilers from Curry to Prolog. It is a haskell 98 imple

Re: [Haskell-cafe] Re: Cyclic data declarations

I ran into exactly the same problem while working on my own toy language :) I used a fixed point datatype to solve it as well. This is really the best way, as it lets your expression (or statment) type be a member of functor/foldable/traversable, which is super handy. I made a graph module that le

[Haskell-cafe] Re: ANN: yst 0.2.1

+++ John MacFarlane [Aug 03 09 13:23 ]: > +++ Michael Snoyman [Aug 03 09 22:20 ]: > >Hey John, > > > >I noticed that your code is using the Syck library for Yaml. How were you > >able to get it to deal with Unicode characters? I just wrote a new yaml > >library based on libyaml if

Re: [Haskell-cafe] Re: Simple quirk in behavior of `mod`

Matthias Görgens schrieb: >> Round-to-even means x.5 gets rounded to x if x is even and x+1 if x is >> odd. This is sometimes known as banker's rounding. > > OK. That's slightly unusual indeed. Modula-3 makes it too. Accidentally, I recently had a case where this rounding mode was really bad. I

[Haskell-cafe] Re: ANN: yst 0.2.1

+++ Michael Snoyman [Aug 03 09 22:20 ]: >Hey John, > >I noticed that your code is using the Syck library for Yaml. How were you >able to get it to deal with Unicode characters? I just wrote a new yaml >library based on libyaml if you want to give it a shot (yaml on hackage). >I

Re: [Haskell-cafe] Writing a pnm file

On Mon, Aug 3, 2009 at 11:17 AM, CK Kashyap wrote: > Thanks Sebastian, > Array/accumArray sounds like what I am looking for. > > Int -> ( a -> a ) -> [a] -> [a] > approach, would it not be expensive on memory as well? Or is it just speed? > Well memory will be garbage collected fairly quickly so

Re: [Haskell-cafe] ANN: yst 0.2.1

Excerpts from John MacFarlane's message of Mon Aug 03 03:05:00 +0200 2009: > I'm pleased to announce the release of yst, now available on HackageDB. Great! I've used it for a web site of mine today with success. -- Nicolas Pouillard http://nicolaspouillard.fr

Re: [Haskell-cafe] [Haskell Cafe] Troubles with StateT and Parsec

On Mon, Aug 3, 2009 at 11:46 AM, Paul Sujkov wrote: > 2) too many lifts in the code. I have only one function that really affects > state, but code is filled with lifts from StateT to underlying Parser You do know you can do this, right? do x <- get put (x + 1) lift $ do etc e

Re: [Haskell-cafe] [Haskell Cafe] Troubles with StateT and Parsec

On Mon, Aug 3, 2009 at 10:46 AM, Paul Sujkov wrote: > parseSyslog :: StateT Integer Parser TimeStamp > parseString :: StateT Integer Parser LogString > > and the following code: > parseString = do [...] > Without real code to look at, it's impossible to properly debug the errors in your pseudoc

Re: [Haskell-cafe] Hackage and version control

Robin Green schrieb: > Yes, and darcs repos can also be hosted on patch-tag.com. > community.haskell.org requires you to wait for a volunteer to review > every new project request. Although, you don't need to make a > project request if you only want a 1-developer repository. And by the > way, it

Re: [Haskell-cafe] Re: ANN: yst 0.2.1

Hey John, I noticed that your code is using the Syck library for Yaml. How were you able to get it to deal with Unicode characters? I just wrote a new yaml library based on libyaml if you want to give it a shot (yaml on hackage). It doesn't support aliases, but is otherwise feature complete. Mich

Re: [Haskell-cafe] [Haskell Cafe] Troubles with StateT and Parsec

Hi Paul, the expression (lift parse $ parseSyslog "" message) has the same meaning as (lift parse (parseSyslog "" message)), so you are indeed applying lift to two arguments, while it expects one. Probably you forgot the $ after lift? Best regards, Daniel Paul Sujkov schrieb: Hi haskelle

[Haskell-cafe] [Haskell Cafe] Troubles with StateT and Parsec

Hi haskellers, I have a few problems using monad transformers. I have such two functions: parseSyslog :: StateT Integer Parser TimeStamp parseString :: StateT Integer Parser LogString and the following code: parseString = do -- string parse here, all in the form of lift $ stamp <- l

[Haskell-cafe] Re: ANN: yst 0.2.1

Thanks. I'll put a note to this effect in the README. John +++ Jinjing Wang [Aug 03 09 18:17 ]: > It's possible to serve the generated site with maid, in case apache is > not available: > > cabal update > cabal install maid > > yst create testsite > cd testsite > yst > > cd site > maid > > no

Re: [Haskell-cafe] ANNOUNCE: The Haskell Platform 2009.2.0.2

Hi Alecs, On Mon, Aug 3, 2009 at 1:27 AM, Alecs King wrote: > Thanks for the hard work. > > But there's a problem of the source tarball.  scripts/build.sh skips > building already-installed pkgs -- but scripts/install.sh does not skip > installing them.  So 'make install' fails (err: "The ${PKG}/S

[Haskell-cafe] Re: FastCGI error handling

On Mon, Aug 3, 2009 at 4:32 PM, Victor Nazarov wrote: > I've been trying to write some simple web application in haskell using > FastCGI, HDBC and HStringTemplate. I've got stuck with the following > problem. > [snip] > > main :: IO () > -- main = runFastCGIConcurrent' forkIO 10 (handleErrors test)

[Haskell-cafe] FastCGI error handling

I've been trying to write some simple web application in haskell using FastCGI, HDBC and HStringTemplate. I've got stuck with the following problem. HDBC throws some exceptions and I wanted them to be caught and logged. The code was: -- Main.hs module Main (main) where ... import Control.Concurr

Re: [Haskell-cafe] ANN: yst 0.2.1

It's possible to serve the generated site with maid, in case apache is not available: cabal update cabal install maid yst create testsite cd testsite yst cd site maid now goto http://localhost:3000/ On Mon, Aug 3, 2009 at 9:05 AM, John MacFarlane wrote: > I'm pleased to announce the release of

Re: [Haskell-cafe] Writing a pnm file

Thanks Sebastian, Array/accumArray sounds like what I am looking for. Int -> ( a -> a ) -> [a] -> [a] approach, would it not be expensive on memory as well? Or is it just speed? Regards, Kashyap From: Sebastian Sylvan To: CK Kashyap Cc: haskell-cafe@haskell.

Re: [Haskell-cafe] Writing a pnm file

On Mon, Aug 3, 2009 at 6:38 AM, CK Kashyap wrote: > Thanks Sebastian, > ppm module is indeed very useful. So, I guess my question then just boils > down to, how can I write a function to mimic the setPixel function -> > > Basically, a blank white image would look like this (as per ppm module) >

Re: [Haskell-cafe] ANN: yst 0.2.1

I had a play with this yesterday and thought it looked very useful (like all of John MacFarlane's tools). I'm probably going to use it for a site I'm working on. -Rob ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailm

Re: [Haskell-cafe] haskell code pretty printer ?

Hi Paul, > is there a pretty printer for haskell code somewhere ? I've googled and > caballisted for this without success. I've written some small script > using Language.Haskell.Pretty and Language.Haskell.Parser but the result > isn't that 'pretty'. I mean, it outputs readable code but > superco