Patrick Brannan brannans...@gmail.com writes:
Prelude :module Database.HDBC Database.HDBC.PostgreSQL
module `Database.HDBC.PostgreSQL' is not loaded
I wonder if I haven't seen this when I'm in the package's top directory,
that is, the current directory contains Database/HDBC/PostgreSQL.hs
I'll see if I can't gloss over some of the stuff Ryan Ingram already covered.
On Friday 09 October 2009 9:11:30 am pat browne wrote:
2) Types depending on types called parametric and type-indexed types
The above distinction in types (and values) depending on types has to do with
operations
---
Haskell Weekly News
http://sequence.complete.org/hwn/20091010
Issue 134 - October 10, 2009
---
Welcome to issue 134 of HWN, a newsletter covering
It seems the applicative do is almost identical to the form ML and
Scheme has had since the beginning. Perhaps that semantic similarity
might inform the syntactic debate.
do a - f
g
b - h
pure $ foo a b
into this:
(\a b - pure $ foo a b) * (f * g * h)
This form, although very
Excerpts from oleg's message of Sat Oct 10 11:36:44 +0200 2009:
It seems the applicative do is almost identical to the form ML and
Scheme has had since the beginning. Perhaps that semantic similarity
might inform the syntactic debate.
do a - f
g
b - h
pure $ foo a b
I get a bunch of messages like mkUsageInfo: internal name?
WritebackCmd{tc a1eZY} while transforming my program using Template
Haskell.
It displayed for every data type and for every constructor - I
generate some instances for my data types.
___
Hi,
I want to use Vim with Haskell. Therefore ctags generation is really useful.
The TagList plugin for Vim reads the ctags info from the command line
instead of from the file. I could not figure out how to make ghci :ctags or
hasktasks to print the ctags info to the command line. Is there a way
On Fri, 2009-10-09 at 14:56 -0500, Patrick Brannan wrote:
Hello,
I'm getting back into Haskell after an absence of a few years. I'm in
the process of trying to connect to postgresql with hdbc-postgresql on
a Windows XP box.
Seemingly, things installed without a problem, but at the
On Fri, 2009-10-09 at 12:22 -0700, Bryan O'Sullivan wrote:
On Fri, Oct 9, 2009 at 7:25 AM, Gregory Collins
g...@gregorycollins.net wrote:
There's been an open ticket for months; personally I think
this is a job
for the C preprocessor, but nobody's written
The TagList plugin for Vim reads the ctags info from the command line
instead of from the file. I could not figure out how to make ghci :ctags or
hasktasks to print the ctags info to the command line. Is there a way to
do that? Any hints?
Hmm...
some shell magic:
mkfifo foo
cat foo echo
Hi,
I've added two extensions to the Vec package: Vec-Transform and Vec-Boolean.
These two packages are more or less essential when programming GPipe programs,
but can also be useful for other applications as well.
* Vec-Transform provides some 4x4 transform matrices such as perspective
I don't know if this counts but how about
import Control.Applicative
import Control.Monad
import Random
import Data.List
main'' i j = replicateM j $ maximum' $ (replicateM i . randomRIO $ (0,10^9))
maximum' = foldl1' max
t = main'' (10^4) 5
2009/10/9 mf-hcafe-15c311...@etc-network.de:
Hi
On Thu, 2009-10-08 at 17:28 +0200, Bernd Brassel wrote:
Hi folks,
I am trying to integrate my own preprocessor into a cabal build
process. But there are several points that I get stuck with. Could
someone help me, please?
A simplification of my problem:
I have files Abc.foo and each
Yes, you should not do this in IO. That requires the entire
computation to finish before the result can be used.
Not really the entire computation though... whnf, no?
main = do
let thunks :: IO [Int]
thunks = (sequence . replicate (10^6) $ (randomRIO (0,10^9)))
putStrLn . show . head =
also, looking at the following, it does seem to me that it is sequence
that is too strict, and not IO that is to blame, as the Maybe monad
has the same behavior:
t5IO, t6IO :: IO Int
t5Maybe, t6Maybe :: Maybe Int
t5 = return . head = sequence [return 1, undefined]
t6 = return . head = return
That did the trick. Everything works perfectly now. Thank you.
On Sat, Oct 10, 2009 at 8:04 AM, Duncan Coutts
duncan.cou...@googlemail.com wrote:
On Fri, 2009-10-09 at 14:56 -0500, Patrick Brannan wrote:
Hello,
I'm getting back into Haskell after an absence of a few years. I'm in
the process
On 2009-10-09, at 7:53 PM, John A. De Goes wrote:
The vast majority of applications being built today are web apps.
I'm not convinced this is the case. There are still a great many
enterprise desktop apps and mobile apps being built, and the selection
bias towards internet-based
Robert Atkey wrote:
A deep embedding of a parsing DSL (really a context-sensitive grammar
DSL) would look something like the following. I think I saw something
like this in the Agda2 code somewhere, but I stumbled across it when I
was trying to work out what free applicative functors were.
Suppose we implement type-level naturals as so:
data Zero
data Succ a
Then, we can reflect the type-level naturals into a GADT as so (not
sure if ``reflect'' is the right terminology here):
data Nat :: * - * where
Zero :: Nat Zero
Succ :: Nat a - Nat (Succ a)
Using type families, we can
I say competition, but.. at the moment I'm only aware of a single
Haskell-tan, namely the one at
http://www.reddit.com/r/programming/comments/9ss7n/haskell%E3%82%BF%E3%83%B3_%E7%B5%B5/.
This cannot stand. Haskell needs an anthropomorphized personification,
like any other modern language. Anyway,
Just a note: Haskell and 'tan' in one sentence, combined with some
girlish flavour, makes me think about Audrey TANg.
On 10 Oct 2009, at 23:02, Svein Ove Aas wrote:
I say competition, but.. at the moment I'm only aware of a single
Haskell-tan, namely the one at
Apparently they like what they see, and they want it to:
http://kskky.info/wiki/STM.NETInFramework4
(I notice that it relies on the user manually annotating anything that
isn't safe to revert... This makes me nervous.)
___
Haskell-Cafe mailing list
On Fri, Oct 09, 2009 at 05:48:15PM -0600, Luke Palmer wrote:
To: mf-hcafe-15c311...@etc-network.de
Cc:
From: Luke Palmer lrpal...@gmail.com
Date: Fri, 9 Oct 2009 17:48:15 -0600
Subject: Re: [Haskell-cafe] How do I get this done in constant mem?
On Fri, Oct 9, 2009 at 2:05 PM,
On Sat, Oct 10, 2009 at 09:33:52AM -0700, Thomas Hartman wrote:
To: Luke Palmer lrpal...@gmail.com
Cc: mf-hcafe-15c311...@etc-network.de, haskell-cafe@haskell.org
From: Thomas Hartman tphya...@gmail.com
Date: Sat, 10 Oct 2009 09:33:52 -0700
Subject: Re: [Haskell-cafe] How do I get this done
(I notice that it relies on the user manually annotating anything that isn't
safe to revert... This makes me nervous.)
So due to impurity everything that isn't explicitly annotated is
implicitly 'unsafeIOToSTM'?
___
Haskell-Cafe mailing list
Thomas DuBuisson wrote:
(I notice that it relies on the user manually annotating anything that isn't
safe to revert... This makes me nervous.)
So due to impurity everything that isn't explicitly annotated is
implicitly 'unsafeIOToSTM'?
It seems that instead of marking the handful of
brad.larsen:
John,
On Thu, Oct 8, 2009 at 3:20 PM, John A. De Goes j...@n-brain.net wrote:
[...]
JVM is cross-platform, and contains sufficient typing information to
permit one to write something like, import foreign jvm
java.list.Collection, and have typed access to the whole class and
Am Samstag 10 Oktober 2009 22:14:38 schrieb mf-hcafe-15c311...@etc-network.de:
On Sat, Oct 10, 2009 at 09:33:52AM -0700, Thomas Hartman wrote:
To: Luke Palmer lrpal...@gmail.com
Cc: mf-hcafe-15c311...@etc-network.de, haskell-cafe@haskell.org
From: Thomas Hartman tphya...@gmail.com
Date:
On Sat, Oct 10, 2009 at 5:11 PM, Don Stewart d...@galois.com wrote:
brad.larsen:
John,
On Thu, Oct 8, 2009 at 3:20 PM, John A. De Goes j...@n-brain.net wrote:
[...]
JVM is cross-platform, and contains sufficient typing information to
permit one to write something like, import foreign jvm
brad.larsen:
On Sat, Oct 10, 2009 at 5:11 PM, Don Stewart d...@galois.com wrote:
brad.larsen:
John,
On Thu, Oct 8, 2009 at 3:20 PM, John A. De Goes j...@n-brain.net wrote:
[...]
JVM is cross-platform, and contains sufficient typing information to
permit one to write something
On Tue, Oct 6, 2009 at 11:41 AM, Arne Dehli Halvorsen
arne@gmail.com wrote:
This may be a little off-topic, but if someone could help me, I'd be
grateful.
I am trying to get to a working gtk2hs environment in MacOSX Snow Leopard
I have a Macbook Pro 2.1 with Snow Leopard.
While I had
31 matches
Mail list logo
