[Haskell-cafe] Coding Standards (Coding Conventions)
I wonder if there are any Coding Standards or Coding Conventions for Haskell. Does anybody know something about it? Kind regards, Philipp Volgger ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Random idea
For me it gives: 1 + 1 Maybe you meant: . v But the rest of the commands seems working ;) Andrew Coppin schrieb: Rodrigo Queiro wrote: http://lambdabot.codersbase.com/ Wait, what the hell...? 1 + 1 /usr/lib/ghc-6.4.2/package.conf: openFile: does not exist (No such file or directory) ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Problems with Hs-Plugins
I tried following very simple program: module Main where import System.Eval.Haskell main = do i - eval 1 + 6 :: Int [] :: IO (Maybe Int) if isJust i then putStrLn (show (fromJust i)) else return () I compile it with ghc -c Main.hs and everything seems fine. When I run it with ghc Main.o I get following message: Main.o(.text+0x48):fake: undefined reference to `AltDataziTypeable_zdfTypeableInt_closure' Main.o(.text+0x4d):fake: undefined reference to `SystemziEvalziHaskell_eval_closure' Main.o(.text+0x36f):fake: undefined reference to `__stginit_SystemziEvalziHaskell_' Main.o(.rodata+0x0):fake: undefined reference to `SystemziEvalziHaskell_eval_closure' Main.o(.rodata+0x4):fake: undefined reference to `AltDataziTypeable_zdfTypeableInt_closure' collect2: ld returned 1 exit status When I run it with runhaskell Main I get: GHCi runtime linker: fatal error: I found a duplicate definition for symbol _GHCziWord_fromEnum1_closure whilst processing object file c:/ghc/ghc-6-4-2/ghc-6.4.2/HSbase1.o This could be caused by: * Loading two different object files which export the same symbol * Specifying the same object file twice on the GHCi command line * An incorrect `package.conf' entry, causing some object to be loaded twice. GHCi cannot safely continue in this situation. Exiting now. Sorry. So I did probably something totally wrong, but what? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Is Hs-Plugins dead?
Is Hs-Plugins still under develeopment; is there still somebody who is updating it? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] FIT for Haskell
Who wrote FIT for Haskell on http://darcs.haskell.org/FIT/? Does anybody know if the version is stable? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] IDE support
What IDE support is available for Haskell (Visuall Haskell, EclipseFP), anything else? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Installation of hs-plugins
I now used GHC 6.4 and mingw ( MSYS-1.0.11 ). Now it is possible to configure, build and install it. But on running the test ( out of a email from the list, source code see below) it crashes again without any information. I compiled the Test1.hs with ghc -c Test1.hs. Bayley, Alistair wrote: From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Philipp Volgger could somebody please tell me how hs-plugins has to be installed. I tried it with hs-plguin 1.0rc1 and I was unable to build it. I did runhaskell Setup.lhs configure runhaskell Setup.lhs build (Crash without any information) I tried it wiht GHC 6.4, 6.4.1 and 6.6. I am using Windows XP with SP2. I'm pretty sure you need to install under some kind of bash shell. I used mingw on WinXP, but I think it can be done with cygwin. I'd recommend mingw if you don't have either installed. Note that hs-plugins doesn't work with ghc-6.6 yet on Windows, so stick with 6.4.1 if you can. Alistair * Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person(s) or entity to which it is addressed. Any review, retransmission, dissemination, or taking of any action in reliance upon this information by persons or entities other than the intended recipient(s) is prohibited. If you received this in error, please contact the sender and delete the material from any computer. * Test: module Test1 where test1 = putStrLn test1 module Main where import Prelude hiding (catch) import Control.Exception import Data.List import System.Environment import System.Plugins instance Show (LoadStatus a) where show (LoadFailure errors) = LoadFailure - ++ (concat (intersperse \n errors)) show (LoadSuccess m p) = LoadSuccess main = do a - getArgs let modName = case a of (n:_) - n _ - Test1 let modPath = ./ ++ modName ++ .o let method = test1 fc - catch (load modPath [] [] method) (\e - return (LoadFailure [Dynamic loader returned: ++ show e])) case fc of LoadFailure errors - do fail (concat (intersperse \n errors)) LoadSuccess modul proc - do let p :: IO (); p = proc proc ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Installation of hs-plugins
Hello everybody, could somebody please tell me how hs-plugins has to be installed. I tried it with hs-plguin 1.0rc1 and I was unable to build it. I did runhaskell Setup.lhs configure runhaskell Setup.lhs build (Crash without any information) I tried it wiht GHC 6.4, 6.4.1 and 6.6. I am using Windows XP with SP2. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Function call by string
Hello everybody! Can me somebody say how I can call a function by string? Thus I want to have a function that has as argument a string (name of a function to call) and then tries to call that function, a kind of: functionCall :: String - [String] - RetVal functionCall functionName arguments = ... Thanks ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Function call by string
Well, the Haskell files are not the problem, they don't have to be built automatically. The point is that I want to call functions in a Haskell function if I get their names as strings. Isn't there any possibilty to do that? Eventually the interpreter reads also the console in to execute the input. Maybe it will be the best to look there (interpreter code of GHCi) Thank you :) Lennart Augustsson schrieb: It sounds like you need to generate some kind of Haskell stubs given the Java signatures. On Apr 8, 2007, at 11:16 , Philipp Volgger wrote: Well my problem is the following. I try to make Haskell work with FIT for Java. I would like to have a 1-to-1 corresondence between the Java methods and the functions in the corresponding module in Haskell, thus they would have to have the same name and arguments/parameters. From Java I could then run the Haskell Code (by a Server), but I would like to have the possiblity to name the module, the functionname and so on. Lennart Augustsson schrieb: In general, you can't do that. You can only do it if you restrict the functions that can be called somehow, e.g., by having a list of callable functions and their names. Why do you want to do this? Perhaps there is a more Haskelly solution to your problem. -- Lennart On Apr 8, 2007, at 11:01 , Philipp Volgger wrote: Hello everybody! Can me somebody say how I can call a function by string? Thus I want to have a function that has as argument a string (name of a function to call) and then tries to call that function, a kind of: functionCall :: String - [String] - RetVal functionCall functionName arguments = ... Thanks ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
