On Thu, Dec 23, 2010 at 2:01 PM, Mark Lentczner wrote:
>
> On Dec 22, 2010, at 9:29 PM, Magicloud Magiclouds wrote:
>> Thus under all situation (ascii, UTF-8, or even
>> UTF-32), my program always send 4 bytes through the network. Is that
>> OK?
>
> Generally, no.
>
> Haskell strings are sequences
On Dec 22, 2010, at 9:29 PM, Magicloud Magiclouds wrote:
> Thus under all situation (ascii, UTF-8, or even
> UTF-32), my program always send 4 bytes through the network. Is that
> OK?
Generally, no.
Haskell strings are sequences of Unicode characters. Each character has an
integral code point v
Cabal-dev is now capable of launching ghci with the project's package
database and local modules (if the package under development exposes a
library). For example:
# First, invoke cabal-dev install the package to populate the
# package database:
$ cabal-dev install
.
Hi,
Recently, I am reading ssh hackage
(http://hackage.haskell.org/package/ssh). When at the part of deal
with string, I got confused. I am not sure if this is a bug for the
hackage, or I am just misunderstanding.
An ascii char takes a Word8. So this works (LBS stands for
Data.ByteString.Lazy):
Thanks for the tip, Ozgur. It worked for me. Is this what you had in mind, Ryan?
Michael
==
import Control.Monad.State.Lazy
import Control.Monad
import System.Random
type GeneratorState = State StdGen
data Craps a = Roll a | Win a | Lose a deriving (Show)
genRandomR :: Random a =>
Yeah, I know this has been discussed a number of times, but I have
some concrete questions I haven't seen asked before. And the "parsec
3 is now as fast as parsec 2" thing I've seen around doesn't seem to
be true for me.
I have an app that does a lot of parsing of small expressions. It's
current
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On 12/17/10 06:22 , Arnaud Bailly wrote:
> Thanks for your answers. I am a little bit surprised, I thought
> timestamps were on the milliseconds scale.
POSIX timestamps are seconds.
- --
brandon s. allbery [linux,solaris,freebsd,perl] allb.
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On 12/15/10 02:36 , Roman Cheplyaka wrote:
> Regarding the rationale, I'm not so sure and I'd like to hear an
> explanation from someone competent. But I assume it has something
> to do with the fact that if you supply a 'do' argument, you cannot
> sup
see also:
http://hackage.haskell.org/packages/archive/mtl/latest/doc/html/Control-Monad-State-Lazy.html#v:state
On 22 December 2010 20:02, Ryan Ingram wrote:
> Interesting. In that case,
>
> state f = StateT $ \s -> Identity (f s)
>
> allows "state" to replace "State" in that code.
>
Ozgur
___
On Thu, 23 Dec 2010, Henning Thielemann wrote:
On Wed, 22 Dec 2010, Eugene Kirpichov wrote:
It defines types like {{Int,Word}{16,32,64},Double,Float}{LE,BE} (for
example Int32BE) etc. with a corresponding Storable instance.
How about type constructors LittleEndian and BigEndian?
newtype Li
On Sat, Dec 4, 2010 at 2:08 PM, Serguey Zefirov wrote:
> Why TypeRep does have equality and doesn't have ordering?
>
> It would be good to have that.
Yes, I have wanted that too. It would make maps from types to values
possible/efficient. There is a very critical path in jhc that use
type-indexed
On Wed, 22 Dec 2010, Eugene Kirpichov wrote:
Hi cafe,
I've released "storable-endian"
http://hackage.haskell.org/package/storable-endian
It defines types like {{Int,Word}{16,32,64},Double,Float}{LE,BE} (for
example Int32BE) etc. with a corresponding Storable instance.
It is needed for binary
On Wed, 22 Dec 2010, gutti wrote:
question 1. u see the two commented lines I tried to get ur original line
running, but didn't know how to specify f
What 'f' ? Do you mean
matrixfunction f x y = liftMatrix2 (zipVectorWith f) x y
?
## Code
import Numeric.LinearAlgebra
import G
On 22/12/2010 14:48, Artyom Shalkhakov wrote:
> ..Do you want to prove a property of
> a function formally, using some kind of formal logic?
I am aware that functional languages do not do proofs at term level, but
the motivation for my question is to get a precise reason why this is
so. The replie
On 23 December 2010 00:09, Andrew Coppin wrote:
>
> Presumably the only way to do that would be to build one. (?) As I
> understand it, apt-get and similar tools are designed to 100% prevent you
> having any choice whatsoever over the version numbers of stuff that gets
> installed. On the other ha
On Tue, Dec 14, 2010 at 10:31 AM, Pierre-Etienne Meunier
wrote:
> Is there something like an identity type, transparent to the type-checker, in
> haskell ?
> For instance, I'm defining an interval arithmetic, with polynomials,
> matrices, and all that... defined with intervals. The types are :
Hi Henning,
You definitly caught me on that little Germanism :-)
About Your comments - a lot to learn and take in, but it really helps. -
Thanks a lot.
I just manged to get the Matrix masking running code looks like (code A see
below). Two quick questions:
question 1. u see the two commented
Patai, I read your paper on Elerea. It wasn't easy :), but I think I got the
picture.
So I would have 2 questions :
I made a simple function which turns an infinite list into a signal :
fromList :: [a] -> SignalGen (Signal a)
fromList xs =
stateful xs tail >>= memo . fmap head
1) It does what
Interesting. In that case,
state f = StateT $ \s -> Identity (f s)
allows "state" to replace "State" in that code.
On Wed, Dec 22, 2010 at 4:56 AM, Daniel Fischer
wrote:
> On Wednesday 22 December 2010 12:03:01, Ryan Ingram wrote:
>> Huh, that's weird, I just copy and pasted this into a new fi
On 22 December 2010 16:51, Daniel Fischer
wrote:
> On Wednesday 22 December 2010 16:54:04, Aaron Gray wrote:
> > Missing Parsec library :-
> >
> > scheme.o(.text+0x4fa):fake: undefined reference to
> > `parseczm2zi1zi0zi0_TextziParserCombinatorsziParsecziCombinator_skipMany
> >1_closure' scheme.o(
On Wed, Dec 22, 2010 at 5:09 AM, Andrew Coppin
wrote:
> On 22/12/2010 11:08 AM, Eric Kow wrote:
>
>> Andrew,
>>
>> Thanks for your report. Indeed, please direct future reports
>> to darcs-users or b...@darcs.net
>>
>
> That would require me to sign up to yet another mailing list just to report
> o
On 22 December 2010 16:47, Antoine Latter wrote:
> ghc doesn't, by default, go searching for packages to link in to the
> resulatant executable..
>
> If you try 'ghc --make scheme.hs' your example will work better.
Are great, thanks a lot.
> You can also specify what to link manually, but --m
On 14/12/2010 08:35, Isaac Dupree wrote:
On 12/14/10 03:13, John Smith wrote:
I would like to formally propose that Monad become a subclass of
Applicative, with a call for consensus by 1 February. The change is
described on the wiki at
http://haskell.org/haskellwiki/Functor-Applicative-Monad_Pro
On Wednesday 22 December 2010 16:54:04, Aaron Gray wrote:
> Missing Parsec library :-
>
> scheme.o(.text+0x4fa):fake: undefined reference to
> `parseczm2zi1zi0zi0_TextziParserCombinatorsziParsecziCombinator_skipMany
>1_closure' scheme.o(.text+0x501):fake: undefined reference to
> `parseczm2zi1zi0zi
On Wed, 22 Dec 2010 13:22:07 +0100, David Virebayre
wrote:
Statistics from "A tour of the Haskell Monad functions" (on my site),
after
15.351 pageviews:
I find it surprising that nobody using google chrome ever browsed your
site.
That is indeed strange; below statistics for the same
ghc doesn't, by default, go searching for packages to link in to the
resulatant executable..
If you try 'ghc --make scheme.hs' your example will work better.
You can also specify what to link manually, but --make works pretty
well most of the time.
In ghc version 7 '--make' is the default, but u
On 22 December 2010 16:27, Antoine Latter wrote:
> What commands did you enter to produce this error?
>
ghc scheme.hs
I am still getting this on the 2010 2.0.0 release.
Aaron
> Ahanks,
> Antoine
>
> On Wed, Dec 22, 2010 at 9:54 AM, Aaron Gray
> wrote:
> > Missing Parsec library :-
> > sche
On 22 December 2010 16:41, Don Stewart wrote:
> aaronngray.lists:
> >Could someone please point me at a copy of the latest Haskell platform
> or
> >a working GHC please.
> >Many thanks in advance,
>
> The links on haskell.org/platform should work (there was a domain
> change, so you'l
aaronngray.lists:
>Could someone please point me at a copy of the latest Haskell platform or
>a working GHC please.
>Many thanks in advance,
The links on haskell.org/platform should work (there was a domain
change, so you'll no longer see lambda.galois.com links).
-- Don
What commands did you enter to produce this error?
Ahanks,
Antoine
On Wed, Dec 22, 2010 at 9:54 AM, Aaron Gray wrote:
> Missing Parsec library :-
> scheme.o(.text+0x4fa):fake: undefined reference to
> `parseczm2zi1zi0zi0_TextziParserCombinatorsziParsecziCombinator_skipMany1_closure'
> scheme.o(.
Maybe this one:
http://hackage.haskell.org/platform/2010.2.0.0/HaskellPlatform-2010.2.0.0-setup.exe
/J
On 22 December 2010 17:15, Aaron Gray wrote:
> Could someone please point me at a copy of the latest Haskell platform or a
> working GHC please.
> Many thanks in advance,
> Aaron
>
> __
Could someone please point me at a copy of the latest Haskell platform or a
working GHC please.
Many thanks in advance,
Aaron
___
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
Missing Parsec library :-
scheme.o(.text+0x4fa):fake: undefined reference to
`parseczm2zi1zi0zi0_TextziParserCombinatorsziParsecziCombinator_skipMany1_closure'
scheme.o(.text+0x501):fake: undefined reference to
`parseczm2zi1zi0zi0_TextziPaserCombinatorsziParsecziChar_space_closure'
scheme.o(.text+
Windows Haskell Platform download link goes nowhere :-
http://hackage.haskell.org/platform/windows.html
The "Download Haskell for Windows" is broken :-
http://lambda.galois.com/hp-tmp/2010.2.0.0/HaskellPlatform-2010.2.0.0-setup.exe
Aaron
___
Hask
Hi cafe,
I've released "storable-endian"
http://hackage.haskell.org/package/storable-endian
It defines types like {{Int,Word}{16,32,64},Double,Float}{LE,BE} (for
example Int32BE) etc. with a corresponding Storable instance.
It is needed for binary interoperability with libraries or network
proto
Hi everyone,
I've been working on [0] Haskell bindings for [1] libqd for [2]
double-double and quad-double arithmetic, and have been struggling to
implement [3] RealFloat, in particular [4] decodeFloat, mostly because
of its postcondition but also some issues relating to variable precision:
On 22/12/2010 11:08 AM, Eric Kow wrote:
Andrew,
Thanks for your report. Indeed, please direct future reports
to darcs-users or b...@darcs.net
That would require me to sign up to yet another mailing list just to
report one bug. And given that we're talking about a prebuilt binary
being trivia
On Wednesday 22 December 2010 12:03:01, Ryan Ingram wrote:
> Huh, that's weird, I just copy and pasted this into a new file and it
> worked for me.
As a guess, you have mtl-1.*?
In mtl-2.*, State s is made a type synonym for StateT s Identity, so
there's no longer a data constructor State.
_
> Statistics from "A tour of the Haskell Monad functions" (on my site), after
> 15.351 pageviews:
I find it surprising that nobody using google chrome ever browsed your site.
___
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/
Andrew,
Thanks for your report. Indeed, please direct future reports
to darcs-users or b...@darcs.net
> > darcs: bug at src/URL.hs:246 compiled Sep 12 2010 20:24:56
> > Another possible bug in URL.waitNextUrl: curl_multi_perform() - no running
> > handles
> > See http://wiki.darcs.net/BugTracker
Huh, that's weird, I just copy and pasted this into a new file and it worked
for me.
I did prepend the line
module RandTest where
-- ryan
On Tue, Dec 21, 2010 at 6:43 PM, michael rice wrote:
> I changed your die function to rollDie in function roll2Dice (I assume
> that's what you meant) bu
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