Hi Chris,
thanks for insightful links. At the first glance, I think the main
difference is that machines and iteratees process streams of data, while
catamorphisms work on general recursive data structures. (I used count +
sum in the example, which could lead to the impression that it's list
Roman, this is interesting. Is this arrow generalization in some library
already? And does it have a name?
Best regards,
Petr Pudlak
2013/1/27 Roman Cheplyaka r...@ro-che.info
* Petr P petr@gmail.com [2013-01-26 23:03:51+0100]
Dear Haskellers,
I read some stuff about attribute
I'm not able to access the cabal manual today: links to my local copy and
links to the copy at haskell.org result in a 404.
I'm running the Haskell Platform, 2012.4.0.0, 64-bit, OS X 10.8.2. On my
first attempt this morning, I loaded file:///Library/Haskell/doc/start.html
in my browser and
On Jan 27, 2013 8:46 AM, alexander.vershi...@gmail.com wrote:
Sat, Jan 26, 2013 at 12:21:02PM +0600, s9gf4...@gmail.com wrote
According to the documentation, SQLite stores whatever you give it,
paying very little heed to the declared type. If you get SQLite to
*compare* two numbers, it
Do you mean the Cabal User Guide?
http://www.haskell.org/cabal/users-guide/
On Sun, Jan 27, 2013 at 1:07 PM, Richard Cobbe co...@ccs.neu.edu wrote:
I'm not able to access the cabal manual today: links to my local copy and
links to the copy at haskell.org result in a 404.
I'm running the
On Sun, Jan 27, 2013 at 03:47:38PM -0200, Felipe Almeida Lessa wrote:
Do you mean the Cabal User Guide?
http://www.haskell.org/cabal/users-guide/
Yes, that's it, and I'm in the process of downloading a copy now (so I can
work without a WiFi connection).
I'm still curious about why there's a
On Sun, Jan 27, 2013 at 01:48:06PM -0500, Richard Cobbe wrote:
On Sun, Jan 27, 2013 at 03:47:38PM -0200, Felipe Almeida Lessa wrote:
Do you mean the Cabal User Guide?
http://www.haskell.org/cabal/users-guide/
Yes, that's it, and I'm in the process of downloading a copy now (so I can
work
You have applied the so-called banana-split theorem, as described e.g. in
http://www.cs.ox.ac.uk/jeremy.gibbons/publications/acmmpc-calcfp.pdf
Indeed you are right in noticing the correspondence between AG's and
catamorphims; actually I see AG's as a domain specific language for
constructing
Hi,
Is it possible to generate different instances for newtypes and
datatypes using GHC.Generics?
Roman
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Hi Roman,
Yes, the automatic derivation of Generic instances does not see through
newtypes.
Cheers,
Pedro
On Sun, Jan 27, 2013 at 8:17 PM, Roman Cheplyaka r...@ro-che.info wrote:
Hi,
Is it possible to generate different instances for newtypes and
datatypes using GHC.Generics?
Roman
Sorry, I wasn't clear. What I want is somehow to find out whether the
type under consideration is declared using data or newtype.
Is it possible?
Roman
* José Pedro Magalhães j...@cs.uu.nl [2013-01-27 20:29:52+]
Hi Roman,
Yes, the automatic derivation of Generic instances does not see
Ah, no. But that would be easy to add to the Datatype
classhttp://hackage.haskell.org/packages/archive/base/4.6.0.0/doc/html/GHC-Generics.html#g:3,
I think. Perhaps
open a feature request?
Cheers,
Pedro
On Sun, Jan 27, 2013 at 8:34 PM, Roman Cheplyaka r...@ro-che.info wrote:
Sorry, I wasn't
Sure. Should it go to the GHC bug tracker?
Roman
* José Pedro Magalhães j...@cs.uu.nl [2013-01-27 20:36:54+]
Ah, no. But that would be easy to add to the Datatype
classhttp://hackage.haskell.org/packages/archive/base/4.6.0.0/doc/html/GHC-Generics.html#g:3,
I think. Perhaps
open a feature
Hi Eric,
In a previous project, I chose vty over ncurses:
- you can write your own event loop, and hence handle different
event sources.
- more liberal license (BSD3 versus GPL)
Tim
On 26/01/13 19:24, Erik de Castro Lopo wrote:
Hi all,
I am in the process of writing a Haskell
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