Hello,
I am interested in applying for GSoC-2012 with the Haskell community.
(I think I've told that to quite a number of people already, sorry for
the duplicate.) I'm currently digging my way towards
http://hackage.haskell.org/trac/ghc/ticket/4213 . However, instead of
focusing on a single
Message: 6
Date: Sun, 12 Feb 2012 01:47:40 -0500
From: wren ng thornton w...@freegeek.org
Subject: Re: [Haskell-cafe] ANN: stm-conduit-0.2.1
To: Haskell Cafe haskell-cafe@haskell.org
Message-ID: 4f37608c.3090...@freegeek.org
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On
Hello, everyone!
I'm pleased to finally announce the fb package, a Haskell-only package
that provides bindings to Facebook's API. This package is sponsored
by my employer, which will soon enough be able to become the copyright
holder of all of our open source contributions.
I'm using ghci + hmatrix and a few other packages as a Haskell based
replacement for Matlab, everything works well so far in terms of available
functionality. However, I have encountered an issue when running in ghci on
x86_64 systems - calls into functions that in turn call gsl functions will
Hello,
I have a program which I believe can benefit from concurrency. But I
am wondering if the mechanisms I need already exist somewhere on
Hackage.
Here is a sketch of my program, in literate Haskell:
module Problem where
import Control.Monad ( forM_ )
The producer produces values. It
Quoth =?ISO-8859-1?Q?Yves_Par=E8s?= yves.pa...@gmail.com,
You mean I have to use a type like StablePtr (IORef Stuff)?
Because there I can only peek (deRefStablePtr) the pointer, not poke it.
I take it I should return to C a StablePtr to the new value if I don't want
to use IORefs...
Yes ...
I've merged and pushed the changes to the stable branch on GitHub. If
someone could verify that it works fine on Windows, I'll make another
release.
In addition to running whatever program you're interested in, also run:
cabal clean
autoreconf
cabal configure --enable-tests
cabal build
cabal
Did as requested and everything seems to work fine. Test suite also passes:
Test Cases Total
Passed 10 10
Failed 0 0
Total 10 10
Test suite simple: PASS
2012/2/13 Johan Tibell johan.tib...@gmail.com
I've merged and pushed the changes to the stable
We are happy to open registration to all. If you're interested in checking
out some neat talks or hacking on cool Haskell projects, reserve your spot
today!
http://www.haskell.org/haskellwiki/DHD_UHac
We are still looking for speakers for the Dutch HUG Day. Please consider
sharing your latest
Version 2.3.0.11 released.
On Mon, Feb 13, 2012 at 9:58 AM, Holger Reinhardt hreinha...@gmail.comwrote:
Did as requested and everything seems to work fine. Test suite also passes:
Test Cases Total
Passed 10 10
Failed 0 0
Total 10 10
Test suite
Dear Ivan,
A great explanation you have provided! It is very clear. Thank you so much!
(You Haskell folks are so willing to help.) Wish there was something I knew
that would be useful to you.
Thank you.
Sincerely,
Richard E. Adams
Applications Developer
Las Vegas Valley Water District
Conduits [1] can help solve this problem, and recently I added a package
[2] onto Hackage to get exactly the type of concurrency that you're looking
for.
[1] http://hackage.haskell.org/package/conduit-0.2.1
[2] http://hackage.haskell.org/package/stm-conduit
On Mon, Feb 13, 2012 at 10:12 AM, Roel
Resending as the last message got held for moderation:
On Mon, Feb 13, 2012 at 10:18 AM, Johan Tibell johan.tib...@gmail.comwrote:
Version 2.3.0.11 released.
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Hello,
I've been trying to get in touch with the maintainer (CC'd) about
the xattr package for about a month. There are quite a few memory
leaks (among other issues) for which I have a patch (see [1]). I
would like to push the new version to Hackage, but the etiquette
for taking over a package is
Hi Sergiu,
Thanks you for your interest in that proposal. I rushed it off a year
ago. Since then we have made a lot of improvements to Persistent and
the library forms a basic building block for most Yesod users and
other Haskellers. Persistent offers a level of type-safety and
convenience not
Could someone with more knowledge of the project please update
http://www.haskell.org/haskellwiki/Web/Databases_and_Persistence, to
reflect the move from happstack-state to acid-state?
Thanks,
Tom
On 2/11/12, dag.odenh...@gmail.com dag.odenh...@gmail.com wrote:
On 10 February 2012 23:09,
With respect, I don't think that Persistent is a natural choice
as the go-to tool for Haskell users, simply because it requires
knowledge of a lot of Yesod-EDSL syntax.
The set of users with persistent data needs seems a very
different set than that of those who are familiar with Yesod,
Actually, Persistent is fully usable without any special syntax, DSLs,
or Template Haskell. In fact, Persistent itself has no
template-haskell dependencies, specifically so that it can be built on
ghc-iphone. Additionally, the Persistent DSL syntax is completely
separate from any other Yesod DSL
It seems that all tutorials and resources for Persistent use Template
Haskell along with several Yesod specifics.
But, I could be wrong, or new tutorials could be written.
Tom
On 2/13/12, Michael Snoyman mich...@snoyman.com wrote:
Actually, Persistent is fully usable without any special
On 13 February 2012 20:19, Tom Murphy amin...@gmail.com wrote:
Could someone with more knowledge of the project please update
http://www.haskell.org/haskellwiki/Web/Databases_and_Persistence, to
reflect the move from happstack-state to acid-state?
Good idea; I added acid-state to that page
Persistent is a database abstraction layer with no dependencies on
Yesod. Those that need a persistence layer have the same needs to
interface with the database in a type-safe way, regardless of whether
their program presents a web interface.
Have you tried using Persistent? We have never heard a
I have quiet a lot of experience in the business of web services
strongly backed by data stores, in a company that allowed me to apply
a technologies such as RubyOnRails, DataMapper, PostgreSQL, Redis, Riak,
HappStack and Snap. Greg, with no offense intended, I will share with
the café a
On Mon, Feb 13, 2012 at 9:01 PM, Greg Weber g...@gregweber.info wrote:
Thanks you for your interest in that proposal. I rushed it off a year
ago. Since then we have made a lot of improvements to Persistent and
the library forms a basic building block for most Yesod users and
other Haskellers.
On 2/13/12, Paul R paul.r...@gmail.com wrote:
[...]
Abstraction over high level data stores is one of
the worst idea in software engineering.
The most proeminent example is probably PostgreSQL, which is an
incredibly strong product with high SQL power. But as soon as you access
it through
On Mon, Feb 13, 2012 at 9:53 PM, Paul R paul.r...@gmail.com wrote:
So Sergiu, my POV is that universal data stores is at best a glue
targeting small projects, so that they can be hacked quickly. They offer
a set of features that, by design, is the greatest common divisor of the
backends,
For one, I am adverse to DSL based on quasi-quotation. Not because
I find the syntax hard - to be honnest it is often the opposite, with
DSL designed with ease of use in mind - but because of the volatile
nature of languages without specification, be them basic DSL. It is
quiet hard to settle on a
Hi all:
I'm conducting a poll on Haskellers.com to assess the community importance
of GHC External Core. Here's the link: http://www.haskellers.com/poll/7
Thanks,
James Fisher
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On 2/13/12, Sergiu Ivanov unlimitedscol...@gmail.com wrote:
[...]
a stable, flexible, and
easy-to-work-with, already existing storage interface should allow
Haskell programmers to focus less on IO and more on the purely
functional logic.
+1 - Very exciting!
Tom
The most proeminent example is probably PostgreSQL, which is an
incredibly strong product with high SQL power. But as soon as you access
it through the ActiveRecord or Persistent API, it gets turned into
a very limited store, with the SQL power of SQLITE or MongoDB.
Tom Limited /= Worst,
To clarify and expand, the motivation behind this poll is that in a ticket
on the External Core feature of
GHChttp://hackage.haskell.org/trac/ghc/ticket/5844,
SPJ wrote: I wonder who uses External Core?
I'm working on that ticket and an answer to that question would be useful.
In particular, the
You make it sound like your options are use the crippled abstraction
layer or use the full-powered database layer. You're leaving out
two very important points:
1. There's a reason the abstraction layer exists: it can be clumsy to
go directly to the full-powered database for simple stuff.
2. You
Paul, I appreciate your experience and you might find it interesting
that I have come to similar conclusions from my own experience!
As Tom commented though, just because something is limited does not
mean it is bad for every project. There are many small scale projects
that do just fine with
Mailing list thread split!
The GSoC seems like it should have its own list thread, so I'm moving
this other discussion:
On 2/13/12, Paul R paul.r...@gmail.com wrote:
The most proeminent example is probably PostgreSQL, which is an
incredibly strong product with high SQL power. But as soon as you
On Mon, Feb 13, 2012 at 12:08 PM, James Fisher jameshfis...@gmail.com wrote:
Hi all:
I'm conducting a poll on Haskellers.com to assess the community importance
of GHC External Core. Here's the link: http://www.haskellers.com/poll/7
Is this the same or different than what you get with the
Johan Tibell wrote:
Here's a heads-up that this year's Google of Code is kicking off. My
experience from the last few years is that we can maximize the output we
get from GSoC by being proactive and writing down semi-detailed
explanations of what kind of projects we'd like to see, instead of
Hello Michael,
From Persistent documentation :
Persistent follows the guiding principles of type safety and concise,
declarative syntax. Some other nice features are:
* Database-agnostic. There is first class support for PostgreSQL,
SQLite and MongoDB, with experimental CouchDB and
On Mon, Feb 13, 2012 at 9:01 PM, Jason Dagit dag...@gmail.com wrote:
Is this the same or different than what you get with the -fext-core
command?
The very same.
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On Mon, Feb 13, 2012 at 1:24 PM, James Fisher jameshfis...@gmail.com wrote:
On Mon, Feb 13, 2012 at 9:01 PM, Jason Dagit dag...@gmail.com wrote:
Is this the same or different than what you get with the -fext-core
command?
The very same.
In that case, I'll fill out the survey, but let me
Deian Stefan haskell-c...@deian.net writes:
I've been trying to get in touch with the maintainer (CC'd) about
the xattr package for about a month. There are quite a few memory
leaks (among other issues) for which I have a patch (see [1]). I
would like to push the new version to Hackage, but
On Mon, Feb 13, 2012 at 1:10 PM, Heinrich Apfelmus
apfel...@quantentunnel.de wrote:
What's the time frame for project proposals? I have two ideas in my head
that I think are unusually cool. To make a successful SOC project, they
need a bit of preparation on my part, though, so I'm wondering
Hello,
On Mon, Feb 13, 2012 at 11:10 PM, Heinrich Apfelmus
apfel...@quantentunnel.de wrote:
What's the time frame for project proposals? I have two ideas in my head
that I think are unusually cool. To make a successful SOC project, they need
a bit of preparation on my part, though, so I'm
* James Fisher jameshfis...@gmail.com [2012-02-13 21:24:26+]
On Mon, Feb 13, 2012 at 9:01 PM, Jason Dagit dag...@gmail.com wrote:
Is this the same or different than what you get with the -fext-core
command?
The very same.
Oh. I usually use -ddump-simpl. Are they different for the
This proposal is vague and we would need to work with you to narrow
things down a bit.
Yes, that would be cool :-) Since I'm not familiar with Persistence at
all (unfortunately :-( ), do you have some suggestions for me to start
with?
I've found this http://www.yesodweb.com/book/persistent
On 02/13/2012 09:36 PM, Michael Snoyman wrote:
You make it sound like your options are use the crippled abstraction
layer or use the full-powered database layer. You're leaving out
two very important points:
1. There's a reason the abstraction layer exists: it can be clumsy to
go directly to
Other than changing the status myself, how do I get a priority
attached to my GSoC proposal?
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On Mon, Feb 13, 2012 at 3:20 PM, Greg Weber g...@gregweber.info wrote:
Other than changing the status myself, how do I get a priority
attached to my GSoC proposal?
What priorities are you referring to?
-- Johan
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Hey all,
Those of you who follow the Haskell subreddit no doubt saw today's post
regarding the status of Hackage 2. As has been said many times in the
past, the primary blocker at this point to the adoption of Hackage 2
appears to be the lack of an administrator.
It seems to me this is a poor
http://hackage.haskell.org/trac/summer-of-code/report/1
There is a column 'Priority'. And there are now several unrated proposals.
On Mon, Feb 13, 2012 at 3:40 PM, Johan Tibell johan.tib...@gmail.com wrote:
On Mon, Feb 13, 2012 at 3:20 PM, Greg Weber g...@gregweber.info wrote:
Other than
Awesome!
I am willing to assist with any Happstack related technical problems or
questions that arise in trying to get this deployed.
- jeremy
On Mon, Feb 13, 2012 at 5:44 PM, Ben Gamari bgamari.f...@gmail.com wrote:
Hey all,
Those of you who follow the Haskell subreddit no doubt saw
It's usually the (potential) mentors who do the rating. I know we did that
two years ago; can't remember last year, though.
On 13 February 2012 23:45, Greg Weber g...@gregweber.info wrote:
http://hackage.haskell.org/trac/summer-of-code/report/1
There is a column 'Priority'. And there are now
Yes. I rated some myself and left a motivation for my rating and waited for
someone to disagree. :) In general I was just trying to help students out
by pushing down proposals that (in my experience) where too hard to
complete in a summer or that were too narrow to benefit a larger portion of
the
On Mon, Feb 13, 2012 at 3:44 PM, Ben Gamari bgamari.f...@gmail.com wrote:
Hey all,
Those of you who follow the Haskell subreddit no doubt saw today's post
regarding the status of Hackage 2. As has been said many times in the
past, the primary blocker at this point to the adoption of Hackage 2
On Mon, Feb 13, 2012 at 11:44:18PM +, Ben Gamari wrote:
Those of you who follow the Haskell subreddit no doubt saw today's post
regarding the status of Hackage 2. As has been said many times in the
past, the primary blocker at this point to the adoption of Hackage 2
appears to be the lack
On 02/13/2012 06:44 PM, Ben Gamari wrote:
I currently have a running installation on my personal machine and
things seem to be working as they should. On the whole, installation was
quite trivial, so it seems likely that the project is indeed at a point
where it can take real use (although a
Hi Ben,
On 13 February 2012 23:44, Ben Gamari bgamari.f...@gmail.com wrote:
Hey all,
Those of you who follow the Haskell subreddit no doubt saw today's post
regarding the status of Hackage 2. As has been said many times in the
past, the primary blocker at this point to the adoption of
On 14 February 2012 01:53, Duncan Coutts duncan.cou...@googlemail.com wrote:
Hi Ben,
On 13 February 2012 23:44, Ben Gamari bgamari.f...@gmail.com wrote:
Hey all,
Those of you who follow the Haskell subreddit no doubt saw today's post
regarding the status of Hackage 2. As has been said many
On Mon, Feb 13, 2012 at 5:44 PM, Ben Gamari bgamari.f...@gmail.com wrote:
Hey all,
Those of you who follow the Haskell subreddit no doubt saw today's post
regarding the status of Hackage 2. As has been said many times in the
past, the primary blocker at this point to the adoption of Hackage 2
On Mon, Feb 13, 2012 at 10:17 PM, Antoine Latter aslat...@gmail.com wrote:
On Mon, Feb 13, 2012 at 5:44 PM, Ben Gamari bgamari.f...@gmail.com wrote:
Hey all,
Those of you who follow the Haskell subreddit no doubt saw today's post
regarding the status of Hackage 2. As has been said many times
On 12-02-13 10:12 AM, Roel van Dijk wrote:
Hello,
I have a program which I believe can benefit from concurrency. But I
am wondering if the mechanisms I need already exist somewhere on
Hackage.
You can try monad-coroutine. Here is an incomplete transcription of
your code:
import
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