On May 17, 2009, at 02:32 , Vasili I. Galchin wrote:
I am confused between Haskell as delineated in the Haskell
Report VS ghc "pragmas" which extend Haskell beyond the Haskell
Report. I am sure I am not the first to ask. Caveat: on my part, I
am not against innovation/extensions, but I
Hello,
I am confused between Haskell as delineated in the Haskell Report VS
ghc "pragmas" which extend Haskell beyond the Haskell Report. I am sure I am
not the first to ask. Caveat: on my part, I am not against
innovation/extensions, but I don't like to see language "bloat". This is not
a ne
---
Haskell Weekly News
http://sequence.complete.org/hwn/20090516
Issue 118 - May 16, 2009
---
Welcome to issue 118 of HWN, a newsletter covering
You need to import Data.Map in any file you use Map in.
Which version of Parsec are you using? Versions before 3.0.0 do not
have a module called Text.Parsec, the module is
Text.ParserCombinators.Parsec (or something like that).
Alex
On Sat, May 16, 2009 at 5:03 PM, Vasili I. Galchin wrote:
> ye
yeah I do ghc can't find the "Map" constructor ..
also in another module Parsec is being used ... I have parsec as a dependecy
in my cabal file and I also have an "import Text.Parsec" but ghc "could not
find module Text.Parsec". ???
Thanks, Vasili
On Sat, May 16, 2009 at 6:57 PM, A
You need to include the "containers" package in your cabal file.
Alex
On Sat, May 16, 2009 at 4:44 PM, Vasili I. Galchin wrote:
> Yevgeni,
>
> I am specifying "base" as a Cabal dependency ... dumb question ... I
> have forgotten whether I need to import Data.Map also?
>
> Vasili
>
> On Sat
Yevgeni,
I am specifying "base" as a Cabal dependency ... dumb question ... I
have forgotten whether I need to import Data.Map also?
Vasili
On Sat, May 16, 2009 at 1:05 AM, Eugene Kirpichov wrote:
> It's Data.Map. It's in the base package.
>
> 2009/5/16 Vasili I. Galchin :
> > Hello,
> >
I'd like to get the scenegraph package
(http://hackage.haskell.org/cgi-bin/hackage-scripts/package/scenegraph)
to work, but am encountering linkage errors.
I installed scenegraph 0.1.0.1 for ghc-6.10.1 on Fedora 10 Linux.
# runghc Setup configure --prefix=/opt
# runghc Setup build
# runghc Setup i
HMap/HMapOut. This makes
the code simpler, and the type signatures more complex -- type families would
help a lot here, I think.
Feedback welcome! You can find my darcs tree at:
http://mysite.verizon.net/vzewxzuh/sitebuildercontent/sitebuilderfiles/haskelldb-hlist-20090516.tar.gz
It also req
>
> We don't seem to have a binding to any of the foreign language libs for
> very large graphs.
>
> Do you know of any stand-out libraries in this regard worth binding?
When I looked in to this last year, the best I could find was the boost
library. It depends very heavily on template meta-progra
thestonetable:
> Hey,
>
> Besides fgl, are there any graph libraries in Haskell that are still
> maintained? Are there other papers (or books) besides Erwig's that I
> could use to understand how graph algorithms have been implemented in
> functional languages?
> Has anything even been publis
Bulat Ziganshin wrote:
Hello Belka,
Saturday, May 16, 2009, 9:22:54 PM, you wrote:
I'm trying to learn Haskell typeclasses, - about how to use them, - but
am i correctly understood that you've started learning type classes
with multi-parameter ones? this may be a bit too brave, especially fo
Hey,
Besides fgl, are there any graph libraries in Haskell that are still
maintained? Are there other papers (or books) besides Erwig's that I
could use to understand how graph algorithms have been implemented in
functional languages?
Has anything even been published on the topic since Erwig'
Hi Deniz,
Deniz Dogan wrote:
So, basically I'd like some sort of folding functionality for these
data types, without having to hack the lexer/parser myself
(parameterising the data types), because as I said they're being
generated by BNFC.
What exactly do you mean by folding functionality? F
Hello Belka,
Saturday, May 16, 2009, 9:22:54 PM, you wrote:
> I'm trying to learn Haskell typeclasses, - about how to use them, - but
am i correctly understood that you've started learning type classes
with multi-parameter ones? this may be a bit too brave, especially for
a woman :D
i suggest y
Hello, cafe visitors!
I'm trying to learn Haskell typeclasses, - about how to use them, - but
can't handle some conceptiual problems, which confuses me a lot. I took one
real problem (ErrorInfo gragual gathering), to tackle it in my studies: I
have a class of situations: there is an object, and i
On Thu, May 14, 2009 at 10:25 AM, Bryan O'Sullivan wrote:
> On Thu, May 14, 2009 at 10:18 AM, Bryan O'Sullivan
> wrote:
>>
>> If one of you has the time to dig into this and send a patch that corrects
>> the problem, I'd welcome the help. As I'm sure you can tell, I developed
>> text-icu on Unix,
Am Montag, 11. Mai 2009 12:04:07 schrieb Neil Brown:
> [...] So possible additions to your type-class list are Foldable and maybe
> Traversable (no harm, although I'd have to reach further for an example
> for this). I guess the tricky decision might be whether to provide a
> Num instance (again,
Hi all,
In my app, there is one part which has a rather complicated GUI logic,
it involves n drop downs with n choices each.
Whenever the current selection in one of the drop downs changes by user
interaction, the other (n-1) drop downs need to be notified and their
item list need to possibl
On Friday 15 May 2009 06:52:29 David Leimbach wrote:
> I actually need little endian encoding... wondering if anyone else hit this
> with Data.Binary. (because I'm working with Bell Lab's 9P protocol which
> does encode things on the network in little-endian order).
> Anyone got some "tricks" for t
On 16 May 2009, at 03:54, wren ng thornton wrote:
Conor McBride wrote:
Rumblings about funny termination behaviour, equality
for functions, and the complexity of unification (which
isn't the proposal anyway)
But unification is what you get by adding non-linearity.
Hang on a minute: we're s
On Fri, May 15, 2009 at 11:10 PM, yu yang wrote:
> Does anyone have an idea how to use an instance to list all the functions of
> type? Thank you!
Perhaps :i inside of ghci?
Jason
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