Re: [Haskell-cafe] can't build module with ffi 'wrapper' by cabal (or ghc): unknown symbol
On Wed, 29 Jun 2005 22:05:49 +0400 /Evgeny/ /Chukreev/ [EMAIL PROTECTED] wrote me: EC gcc src/Codec/Mhash_stub.c -o ... EC /usr/bin/ar qv dist/build/libHSHMhash-0.1.a dist/build/src/Codec/Mhash.o EC /usr/bin/ar: creating dist/build/libHSHMhash-0.1.a EC a - dist/build/src/Codec/Mhash.o (why mhash_stub.o did not archived?) Does no answer to my question mean that there is no-one who knows what kind of bug it is (ghc/cabal/mine) or it is the fact that nobody cares (even the developers of ghc/cabal)? Without answer I can't continue developing that wrapper for mhash library. -- ... WBR, Evgeny Chukreev ... ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Re: haskell parser for java bytecode?
Hi there, keeping out of the previous tiff, I'd just like to mention that I, too, am interested in such a project - I don't require a parser for Java bytecode, but I think I'd be a good experience and at least it would get me to know the JVM a bit better... maybe :) By the way, there once was some discussion about having Haskell actually -target- the JVM (I think, it was on the Glasgow Haskell Users list). That might as well be an interesting thing to do. Best regards, Frank-Andre Riess ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] can't build module with ffi 'wrapper' by cabal (or ghc): unknown symbol
On 7/4/05, Evgeny Chukreev [EMAIL PROTECTED] wrote: On Wed, 29 Jun 2005 22:05:49 +0400 /Evgeny/ /Chukreev/ [EMAIL PROTECTED] wrote me: EC gcc src/Codec/Mhash_stub.c -o ... EC /usr/bin/ar qv dist/build/libHSHMhash-0.1.a dist/build/src/Codec/Mhash.o EC /usr/bin/ar: creating dist/build/libHSHMhash-0.1.a EC a - dist/build/src/Codec/Mhash.o (why mhash_stub.o did not archived?) Does no answer to my question mean that there is no-one who knows what kind of bug it is (ghc/cabal/mine) or it is the fact that nobody cares (even the developers of ghc/cabal)? Without answer I can't continue developing that wrapper for mhash library. The problem lies in GHC. $fptools/ghc/compiler/main/DriverPipeline.hs:514 to be exact. You can link 'dist/build/WrapperMod.o' to 'dist/build/Your/Hierarchy/WrapperMod.o' as a dirty fix. Perhaps copying it after builds with a Cabal hook would be cleaner. -- Friendly, Lemmih ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] matrix computations based on the GSL
Henning Thielemann wrote: I'm uncertain about how who want to put the different kinds of multiplication into one method, even with multi-parameter type classes. You need instances (*) :: Matrix - Matrix - Matrix (*) :: RowVector - Matrix - RowVector (*) :: Matrix - ColumnVector - ColumnVector (*) :: RowVector - ColumnVector - Scalar (*) :: ColumnVector - RowVector - Matrix (*) :: Scalar - RowVector - RowVector (*) :: RowVector - Scalar - RowVector (*) :: Scalar - ColumnVector - ColumnVector (*) :: ColumnVector - Scalar - ColumnVector but you have to make sure that it is not possible to write an expression which needs (*) :: Matrix - RowVector - RowVector Further you need transpose :: RowVector - ColumnVector transpose :: ColumnVector - RowVector transpose :: Matrix - Matrix and you must forbid, say transpose :: RowVector - RowVector Of course if they are all of type Matrix this problem disappears. What is the difference between a 1xN matrix and a vector? Please explain... Keean. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] matrix computations based on the GSL
David Roundy wrote: In short, especially since the folks doing the work (not me) seem to want plain old octave-style matrix operations, it makes sense to actually do that. *Then* someone can implement an ultra-uber-tensor library on top of that, if they like. And I would be interested in a nice tensor library... it's just that matrices need to be the starting point, since they're where most of the interesting algorithms are (that is, the ones that are interesting to me, such as diagonalization, svd, matrix multiplication, etc). This is a really good idea. I would like a Matrix library soon, not in 6 years time. Slice it up into managable pieces and keep it simple! Keean. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] matrix computations based on the GSL
On Tue, 5 Jul 2005, Keean Schupke wrote: David Roundy wrote: In short, especially since the folks doing the work (not me) seem to want plain old octave-style matrix operations, it makes sense to actually do that. *Then* someone can implement an ultra-uber-tensor library on top of that, if they like. And I would be interested in a nice tensor library... it's just that matrices need to be the starting point, since they're where most of the interesting algorithms are (that is, the ones that are interesting to me, such as diagonalization, svd, matrix multiplication, etc). This is a really good idea. I would like a Matrix library soon, not in 6 years time. Slice it up into managable pieces and keep it simple! As I said, _that_ already exists: MatLab, HaskellDSP (with some simple new definitions for infix operators) ... ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] matrix computations based on the GSL
On Tue, 5 Jul 2005, Keean Schupke wrote: Henning Thielemann wrote: I'm uncertain about how who want to put the different kinds of multiplication into one method, even with multi-parameter type classes. You need instances (*) :: Matrix - Matrix - Matrix (*) :: RowVector - Matrix - RowVector (*) :: Matrix - ColumnVector - ColumnVector (*) :: RowVector - ColumnVector - Scalar (*) :: ColumnVector - RowVector - Matrix (*) :: Scalar - RowVector - RowVector (*) :: RowVector - Scalar - RowVector (*) :: Scalar - ColumnVector - ColumnVector (*) :: ColumnVector - Scalar - ColumnVector but you have to make sure that it is not possible to write an expression which needs (*) :: Matrix - RowVector - RowVector This was my reply to Jacques Carette who suggested to distinguish row and column vectors by their _type_. His revised suggestion was to use phantom types. Then the types changes to (*) :: Matrix - Matrix - Matrix (*) :: Vector Row - Matrix - Vector Row (*) :: Matrix - Vector Column - Vector Column (*) :: Vector Row - Vector Column - Scalar ... but the problem remains ... Further you need transpose :: RowVector - ColumnVector transpose :: ColumnVector - RowVector transpose :: Matrix - Matrix and you must forbid, say transpose :: RowVector - RowVector Of course if they are all of type Matrix this problem disappears. All type problems disappear when we switch to exclusive String representation. 8-] What is the difference between a 1xN matrix and a vector? Please explain... My objections to making everything a matrix were the objections I sketched for MatLab. The example, again: If you write some common expression like transpose x * a * x then both the human reader and the compiler don't know whether x is a true matrix or if it simulates a column or a row vector. It may be that 'x' is a row vector and 'a' a 1x1 matrix, then the expression denotes a square matrix of the size of the vector simulated by 'x'. It may be that 'x' is a column vector and 'a' a square matrix. Certainly in most cases I want the latter one and I want to have a scalar as a result. But if everything is a matrix then I have to check at run-time if the result is a 1x1 matrix and then I have to extract the only element from this matrix. If I omit the 1x1 test mistakes can remain undiscovered. I blame the common notation x^T * A * x for this trouble since the alternative notation x, A*x can be immediately transcribed into computer language code while retaining strong distinction between a vector and a matrix type. More examples? More theory? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Fork execve
Hello! Is there some way how to fork a process in haskell? And excuting an another proces, waiting until it exit and colecting his stdout? Matej 'Yin' Gagyi PS: I'm sorry for my English! ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Fork execve
On Tue, 5 Jul 2005, yin wrote: Is there some way how to fork a process in haskell? And excuting an another proces, waiting until it exit and colecting his stdout? Yes, but it depends on -- your Haskell environment (ghc?) -- your platform (UNIX?) If it's ghc and UNIX, see http://www.haskell.org/ghc/docs/latest/html/libraries/base/System.Process.html Or if you would rather use low level POSIX functions directly, see the Posix.IO and Posix.Process pages. The effect of these functions should be as described in the respective man pages for the C functions (though with a few gratuitous API modifications like a [1..n] argv where the C function takes [0..n].) For the Process vs. Command distinction, Command uses the UNIX shell to interpret a command, where Process would execute it directly. If you are going to compute the command parameters, it's much easier to use the Process version, than to check the shell command input data for shell punctuation that would have unintended results. If you're on another platform or using another Haskell implementation, it still might be worth a try, I just haven't tried it myself. Donn Cave, [EMAIL PROTECTED] ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] matrix computations based on the GSL
On 7/5/05, Henning Thielemann [EMAIL PROTECTED] wrote: The example, again: If you write some common expression like transpose x * a * x then both the human reader and the compiler don't know whether x is a true matrix or if it simulates a column or a row vector. But since a, by definition (question), is a 1xN matrix, what's the ambiguity exactly? Michael ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] can't build module with ffi 'wrapper' by cabal (or ghc): unknown symbol
Evgeny Chukreev [EMAIL PROTECTED] writes: On Wed, 29 Jun 2005 22:05:49 +0400 /Evgeny/ /Chukreev/ [EMAIL PROTECTED] wrote me: EC gcc src/Codec/Mhash_stub.c -o ... EC /usr/bin/ar qv dist/build/libHSHMhash-0.1.a dist/build/src/Codec/Mhash.o EC /usr/bin/ar: creating dist/build/libHSHMhash-0.1.a EC a - dist/build/src/Codec/Mhash.o (why mhash_stub.o did not archived?) Does no answer to my question mean that there is no-one who knows what kind of bug it is (ghc/cabal/mine) or it is the fact that nobody cares (even the developers of ghc/cabal)? You posted to the wrong place. I don't follow this list as closely as [EMAIL PROTECTED] It would also help if you can describe your problem and only paste relevant details of your compiler interaction. Which version of Cabal are you using? Handling of _stub files is new in versions 1.0.1, which are not yet released, but you can get it from CVS / darcs or from the latest tarballs on the web page. peace, isaac ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Cabal with Alex and and Happy
Brian Smith [EMAIL PROTECTED] writes: Is there an example of how to build a Cabal package that has a lexer generated with Alex and a parser generated with Happy? As far as I can tell, the way to do this is to add Other-Modules: Module.Name.Of.Parser.y Module.Name.Of.Lexer.x to each executable/library stanza. But, when I try this, I get: No, they should just be Module.Name.Of.Parser and Module.Name.Of.Lexer. Could not find module `GHC.Exts': it is a member of package base-1.0, which is hidden The generated parser code contains: But your real problem is answered by the other replies on this thread. peace, isaac ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
