[Haskell-cafe] GSOC Proposal 2012 : HDBC

2012-04-03 Thread pranjal pandit
Hi, I would like to work on improving the HDBC as a GSOC project 2012. I have a previous working experience with Django and its ORM and I had a look at Amnesia (http://amnesia.sourceforge.net/user_manual/manual.html) which is a SQL database interface for Erlang. Few of the features of both

Re: [Haskell-cafe] Conduits: Is Source a valid instance of Monad?

2012-04-03 Thread Paul Liu
Is there any follow up on this? I was wondering what is the best way to sequence a number of sources together. Anybody gave a further thought on this? Regards, Paul Liu On Tue, Dec 27, 2011 at 3:45 PM, Aristid Breitkreuz arist...@googlemail.com wrote: Hi all, As you may have noticed, Michael

Re: [Haskell-cafe] Fail-back monad

2012-04-03 Thread Alberto G. Corona
Thaks Oleg for your clarification. I thoutgh on the use or ErrorT or something similar but the fact is that i need many bacPoints, not just one. That is, The user can go many pages back in the navigation pressing many times te back buttton.,. My code has a failure detection in each backPoint , so

Re: [Haskell-cafe] Fail-back monad

2012-04-03 Thread Alberto G. Corona
But, on my side, BackT [BackPoint 1] and BackT [NoBack 1] can be made indistinguishable outside the code where the monad is defined. Probably the effect required is not possible without breaking the law 2012/3/31 Ross Paterson r...@soi.city.ac.uk: On Wed, Mar 28, 2012 at 01:34:29AM +0100,

Re: [Haskell-cafe] Conduits: Is Source a valid instance of Monad?

2012-04-03 Thread yi huang
On Wed, Apr 4, 2012 at 4:48 AM, Paul Liu nine...@gmail.com wrote: Is there any follow up on this? I was wondering what is the best way to sequence a number of sources together. Anybody gave a further thought on this? I believe sequence sources together can already be done by `Monoid`

Re: [Haskell-cafe] ANNOUNCE: fast-tags-0.0.1

2012-04-03 Thread Evan Laforge
I recently uploaded fast-tags-0.0.3. The main thing is that all the performance problems I was able to find have been fixed---hopefully will no longer be mistaken as an April Fools joke! Here's copy and paste from the hackage description: Changes since 0.0.2: Lots of speed ups, especially when

[Haskell-cafe] thread killed

2012-04-03 Thread tsuraan
What sorts of things can cause a thread to get an asynchronous thread killed exception? I've been seeing rare, inexplicable thread killed messages in my Snap handlers for a long time, but they aren't from Snap's timeout code. I recently upgraded to ghc 7.4.1, and that caused the kills to happen