Roma'n Gonza'lez wrote
how can one compose a list of enumeratees, is it even possible?
It is possible. Composition of enumeratees is interesting because
-- there are several, distinct and useful ways of doing it,
-- one of the composition methods, shell-like pipelining, requires
Hi there,
I am using the toJson = id way, which doesn't seem to cause other problem.
Thank you.
On Mon, Oct 3, 2011 at 11:18 PM, Steffen Schuldenzucker
sschuldenzuc...@uni-bonn.de wrote:
On 10/03/2011 10:42 PM, Magicloud Magiclouds wrote:
Hi,
I have a function:
post :: (ToJson p,
David Barbour wrote:
Heinrich Apfelmus wrote:
Even then, events and behaviors are one abstraction level too low. In my
opinion, you are better off with a library/approach geared directly towards
incremental computations.
I believe behaviors are precisely the 'right' abstraction if the goal is
Hi all,
In this definition from the Parsec library:
parse :: (Stream s Identity t) = Parsec s () a - SourceName -
s - Either ParseError aparse p = runP p ()
what's the significance of `Identity t'?
(`t' isn't used anywhere.)
Thanks,
-db
___
On Fri, Oct 7, 2011 at 2:46 PM, Brandon Moore brandon_m_mo...@yahoo.com wrote:
Margnus Carlsson did something monadic several years ago.
http://dl.acm.org/citation.cfm?doid=581478.581482
Perhaps there is an implementation on Hackage or on his website.
This stuff also goes by the moniker
If I have this right, Stream is a monad transformer.
Stream s m t means that it parses 's', is stacked with monad 'm' and has a
result of type 't'
So Identity is a monad, the simplest monad, defined as such:
newtype Indentity t = Identity { runIdentity :: t }
It's the identity monad, that does
Wow... my bad. Stream is in no way a monad transformer.
I really should read before speaking...
Stream s m t is such as An instance of Stream has stream type s, underlying
monad m and token type t determined by the stream (
Hallo Café,
Is there a package that allows parsing Text with parsec, or do you have to
switch to attoparsec-text or convert your Text to a ByteString?
Thanks!
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On Sat, Oct 8, 2011 at 12:37 PM, Yves Parès limestr...@gmail.com wrote:
Hallo Café,
Is there a package that allows parsing Text with parsec, or do you have to
switch to attoparsec-text or convert your Text to a ByteString?
I haven't tested it, but this declaration should work:
instance
Parsec is a monadic combinator library that is well-documented, simple
to use, and produces good error messages.
This is a minor point release over Parsec 3.1.1.
The changes in this release are:
From Roman Cheplyaka:
- 'lookAhead' no longer counts as 'consuming input', even when it succeeds.
-
Dear all,
I would like to collect contributions for the 21st edition of the
Haskell Communities Activities Report
http://www.haskell.org/haskellwiki/Haskell_Communities_and_Activities_Report
Hi all,
I'm trying to use the State Monad to help implement a digital filter:
17 newtype Filter e a = F {
18 runFilter :: a - EitherT e (State FilterState) a
19 } deriving (Monad, MonadState FilterState)
but I'm getting these compiler errors:
Filter.hs:19:14:
Can't make a derived
On Sat, Oct 8, 2011 at 4:28 PM, Captain Freako capn.fre...@gmail.comwrote:
17 newtype Filter e a = F {
* 18 runFilter :: EitherT e (State FilterState) a
** * 19 } deriving (Monad, MonadState FilterState)
it compiles, but I can't figure out how I'd feed the input to the filter,
in
Hi.
See the following for the recent announcement:
http://permalink.gmane.org/gmane.comp.lang.haskell.general/18972
On 8 October 2011 18:37, Yves Parès limestr...@gmail.com wrote:
Is there a package that allows parsing Text with parsec, ...
HTH,
Ozgur
http://hackage.haskell.org/package/knob
This is a small package which allows you to create memory-backed
handles. I found it as a pattern in a few of my test suites, so I
spent a day or so polishing it up before posting it to the internet.
Feel free to play around with it and tell me about any
On Sat, Oct 08, 2011 at 04:28:34PM -0700, Captain Freako wrote:
Hi all,
I'm trying to use the State Monad to help implement a digital
filter:
(a - EitherT e (State FilterState) a) is definitely not monadic.
There is an 'a' in a negative position (to the left of an odd number
of arrows) so it
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