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Today's Topics:
1. Re: matrix vector product (Brent Yorgey)
2. error (kolli kolli)
3. Re: error (David Place)
4. Re: error (Gary)
5. Re: error (Brent Yorgey)
6. Leipzig (Germany) Haskell Workshop 7 October - Program and
Registration (Janis Voigtl?nder)
7. Disappearing Module Problem (Michael Craig)
8. Re: Disappearing Module Problem (Michael Craig)
9. Re: Disappearing Module Problem (Antoine Latter)
----------------------------------------------------------------------
Message: 1
Date: Mon, 12 Sep 2011 12:34:24 -0400
From: Brent Yorgey <[email protected]>
Subject: Re: [Haskell-beginners] matrix vector product
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii
On Mon, Sep 12, 2011 at 08:58:16AM -0600, kolli kolli wrote:
> Hi,
>
> I am new to haskell.I want help regarding the basic matrix vector
> multiplication...I dunno how to take vector,how to define it.
>
> On Mon, Sep 12, 2011 at 6:08 AM, Brent Yorgey <[email protected]>wrote:
>
> > On Sun, Sep 11, 2011 at 09:30:00PM -0600, kolli kolli wrote:
> > > Hi,
> > > Can anyone help me with the matrix vector product?
> >
> > You will have to be much more specific. What exactly do you need help
> > with?
> >
> > -Brent
Please send replies to the whole mailing list rather than to
individual people who respond.
I am afraid you are still not being specific enough for anyone to help
you. Are you trying to implement your own matrix-vector
multiplication? If so, why? Is it an assignment for a class? Or are
you just trying to do it to learn something? What have you already
tried? Or are you just looking for a Haskell package which implements
matrix-vector multiplication?
-Brent
------------------------------
Message: 2
Date: Mon, 12 Sep 2011 11:02:53 -0600
From: kolli kolli <[email protected]>
Subject: [Haskell-beginners] error
To: [email protected]
Message-ID:
<cae7d9k7wdqdhlmnj85lbejq+_-y5rjhjhcpz5et69fjkm+h...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
when i am implementing my matrx vector product i am importing
data.vector.its showing me an error
Could not find module `Data.Vector':
Use -v to see a list of the files searched for.
do i need to install any packages.if so, can you guide me how to install
those packages
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Message: 3
Date: Mon, 12 Sep 2011 13:10:08 -0400
From: David Place <[email protected]>
Subject: Re: [Haskell-beginners] error
To: kolli kolli <[email protected]>
Cc: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
You questions make me wonder which introductory book you are using if any.
You will not get very far without one.
> http://www.haskell.org/haskellwiki/Learning_Haskell
I recommend this one.
> http://learnyouahaskell.com/
____________________
David Place
Owner, Panpipes Ho! LLC
http://panpipesho.com
[email protected]
On Sep 12, 2011, at 1:02 PM, kolli kolli wrote:
> when i am implementing my matrx vector product i am importing data.vector.its
> showing me an error
>
> Could not find module `Data.Vector':
> Use -v to see a list of the files searched for.
> do i need to install any packages.if so, can you guide me how to install
> those packages
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://www.haskell.org/mailman/listinfo/beginners
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Message: 4
Date: Mon, 12 Sep 2011 19:17:31 +0200
From: Gary <[email protected]>
Subject: Re: [Haskell-beginners] error
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
a great source of information is:
http://holumbus.fh-wedel.de/hayoo
you can look for function names or type signatures and I found
'Data.Vector' there.
The first entry on the left side shows you a description and the name of
that package in blue. In this case 'vector'.
With the program 'cabal' you can install haskell packages: 'cabal
install vector'
Dependiencies should be resolved automatically.
On 09/12/2011 07:02 PM, kolli kolli wrote:
> when i am implementing my matrx vector product i am importing
> data.vector.its showing me an error
>
> Could not find module `Data.Vector':
> Use -v to see a list of the files searched for.
> do i need to install any packages.if so, can you guide me how to
> install those packages
>
>
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://www.haskell.org/mailman/listinfo/beginners
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Message: 5
Date: Mon, 12 Sep 2011 13:34:01 -0400
From: Brent Yorgey <[email protected]>
Subject: Re: [Haskell-beginners] error
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii
On Mon, Sep 12, 2011 at 11:02:53AM -0600, kolli kolli wrote:
> when i am implementing my matrx vector product i am importing
> data.vector.its showing me an error
>
> Could not find module `Data.Vector':
> Use -v to see a list of the files searched for.
> do i need to install any packages.if so, can you guide me how to install
> those packages
As someone else already pointed out, Data.Vector can be found in the
vector package. However, note that the vector package is a
sophisticated implementation designed to be used in code that needs
high performance. I do not recommend it to someone just starting out
with Haskell. It also does not support matrices. If you are just
trying to learn some Haskell, I would suggest first trying to
implement matrix-vector product using the types
type Vector a = [a]
type Matrix a = [Vector a]
-Brent
------------------------------
Message: 6
Date: Mon, 12 Sep 2011 22:15:05 +0200
From: Janis Voigtl?nder <[email protected]>
Subject: [Haskell-beginners] Leipzig (Germany) Haskell Workshop 7
October - Program and Registration
To: Haskell <[email protected]>, [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Dear all,
On Friday, 7th October, this year's "Haskell in Leipzig" meeting takes
place with tutorials (for Haskell beginners, for Scala beginners, on
parallel Haskell) and exciting talks.
A special emphasis this year is on parallel programming, with a tutorial
by Andres L?h (Well-Typed) and a talk by Kevin Hammond (University of
St. Andrews, Scotland; talk in English).
More information on the website (with program and registration form):
http://portal.imn.htwk-leipzig.de/events/hal6-haskell-workshop
Best,
Janis.
--
Jun.-Prof. Dr. Janis Voigtl?nder
http://www.iai.uni-bonn.de/~jv/
mailto:[email protected]
------------------------------
Message: 7
Date: Mon, 12 Sep 2011 16:34:30 -0400
From: Michael Craig <[email protected]>
Subject: [Haskell-beginners] Disappearing Module Problem
To: [email protected]
Message-ID:
<caha9zafbp+kobm68cdvgpb5862uq9vpb9j-l1+217665whx...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
I'm trying to install aeson and http-enumerator on an otherwise fresh
installation of ghc 7.2 on OS X 10.7. I was inspired by beastaugh's gist on
getting cabal-install running on Lion: https://gist.github.com/1169332.
I can install either aeson or http-enumerator and it'll work fine. However,
as soon as I install the second one the first one disappears. The files are
all there in .cabal/lib, but ghc can't find the module.
Any ideas?
Mike S Craig
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Message: 8
Date: Mon, 12 Sep 2011 16:43:18 -0400
From: Michael Craig <[email protected]>
Subject: Re: [Haskell-beginners] Disappearing Module Problem
To: [email protected]
Message-ID:
<caha9zaha+qs6a9k8yibhrtzdgjbr_qbgzv-uztemz-iqxp-...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Update: I can install other packages (mongoDB, for example), without ghc
losing previous ones. That is, the problem seems to be specific to aeson and
http-enumerator.
Mike S Craig
(908) 328 8030
On Mon, Sep 12, 2011 at 4:34 PM, Michael Craig <[email protected]> wrote:
> I'm trying to install aeson and http-enumerator on an otherwise fresh
> installation of ghc 7.2 on OS X 10.7. I was inspired by beastaugh's gist on
> getting cabal-install running on Lion: https://gist.github.com/1169332.
>
> I can install either aeson or http-enumerator and it'll work fine. However,
> as soon as I install the second one the first one disappears. The files are
> all there in .cabal/lib, but ghc can't find the module.
>
> Any ideas?
>
>
> Mike S Craig
>
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Message: 9
Date: Mon, 12 Sep 2011 15:46:25 -0500
From: Antoine Latter <[email protected]>
Subject: Re: [Haskell-beginners] Disappearing Module Problem
To: Michael Craig <[email protected]>
Cc: [email protected]
Message-ID:
<cakjsnqfehu9geeeniugbcmjljiw72q_2k4x4jr+pja54fte...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
On Mon, Sep 12, 2011 at 3:34 PM, Michael Craig <[email protected]> wrote:
> I'm trying to install aeson and http-enumerator on an otherwise fresh
> installation of ghc 7.2 on OS X 10.7. I was inspired by beastaugh's gist on
> getting cabal-install running on Lion:?https://gist.github.com/1169332.
> I can install either aeson or http-enumerator and it'll work fine. However,
> as soon as I install the second one the first one disappears. The files are
> all there in .cabal/lib, but ghc can't find the module.
> Any ideas?
>
What command are you using to install these, specifically?
What does the following do:
> cabal install aeson http-enumerator
Thanks,
Antoine
> Mike S Craig
>
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://www.haskell.org/mailman/listinfo/beginners
>
>
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