igouy2:
>
> parallel, regex-posix, regex-pcre are now installed and the current
> compile errors are caused by the programs not the absence of required
> libraries -
>
> http://shootout.alioth.debian.org/u64q/program.php?test=binarytrees&lang=ghc&id=2#log
>
> http://shootout.alioth.debian.org/u6
--- On Wed, 6/9/10, Don Stewart wrote:
-snip-
> > Now how do we get those regex-dna and binary-trees
> programs to compile?
> >
> > http://shootout.alioth.debian.org/u32/measurements.php?lang=ghc
> >
>
> binary-trees:
> Could not find module
> `Control.Parallel.Strategies':
>
>
On Fri, Jun 11, 2010 at 08:12:43PM -0500, Antoine Latter wrote:
> > 1) Which extensions are required to make the code compile.
>
> OverlappingInstances (of course), and IncoherrentInstances, since
> neither instance is more specific than the other.
Well, I guess it can't be compiled at all :(
On Friday, June 11, 2010, Felipe Lessa wrote:
> On Sat, Jun 12, 2010 at 12:13:14AM +0200, Dupont Corentin wrote:
>> Thanks all, it works fine (see below).
>>
>> I lamentably try to make the same for show:
>> > showTypeable :: (Typeable a) => a -> String
>> > showTypeable x = case cast x of
>> >
On Sat, Jun 12, 2010 at 12:13:14AM +0200, Dupont Corentin wrote:
> Thanks all, it works fine (see below).
>
> I lamentably try to make the same for show:
> > showTypeable :: (Typeable a) => a -> String
> > showTypeable x = case cast x of
> > Just x' -> show x'
> >
Thanks all, it works fine (see below).
I lamentably try to make the same for show:
> showTypeable :: (Typeable a) => a -> String
> showTypeable x = case cast x of
> Just x' -> show x'
> Nothing -> ""
Because it really upsets me to add this show constraint
--- On Thu, 6/10/10, Louis Wasserman wrote:
> Date: Thursday, June 10, 2010, 1:32 AM
> Yeah, Control.Parallel would be nice to have. Heck, ideally I could get
> the whole Haskell Platform, which would be a reasonable comparison to
> the huge Java and C++ libraries accessible to those languag
On Thu, 2010-06-10 at 21:21 +0100, Ben Millwood wrote:
> On Thu, Jun 10, 2010 at 8:57 PM, Maciej Piechotka
> wrote:
> >
> > Error monad seems not to be a semantic solution as we exit on success
> > not failure.
> >
>
> Which is really why the Either monad should not necessarily have Error
> asso
Hi,
I've been working on a (de)serialization package from/to XML (using
SYB) and wondering if anyone feels like giving me a quick code review
before I upload it to hackagedb.
The source code can be found at http://github.com/finnsson/Text.XML.Generic
It is *heavily* inspired by Text.JSON.Generic
On Fri, 11 Jun 2010, Ben Millwood wrote:
On Fri, Jun 11, 2010 at 2:52 PM, Henning Thielemann
wrote:
I'm uncertain whether fgl conforms to the package versioning policy, but
if it does, then changes in its Cabal file should not bother sifflet.
Thus upper bound fgl < 5.4.3 should be restrictiv
On Fri, Jun 11, 2010 at 04:17:25PM +0200, Christopher Done wrote:
> There are a lot of issues with string encoding type mismatches.
> Especially "automatic" conversions. This mailing list gets enough
> posts about encoding confusions.
>
> Would it make sense to make the string depend on its encodin
There are a lot of issues with string encoding type mismatches.
Especially "automatic" conversions. This mailing list gets enough
posts about encoding confusions.
Would it make sense to make the string depend on its encoding type?
E.g. a String UTF16 cannot be used with putStrLn :: String UTF8, i
On 11 June 2010 14:40, Bulat Ziganshin wrote:
>> if x then foo
>> else if y then bar
>> else if z then mu
>> else zot
>
> case () of
> _ | x -> foo
> | y -> bar
> | otherwise -> zor
>
> it's usually considered as "haskell way" of doing this
The example is merely to demonst
(moving to the cafe)
There is an incompatibility between the version of iconv in Mac Os and
the one included in MacPorts.
As the RTS of the build of ghc in the Haskell Platform is linked
against Mac Os iconv, you cannot use it with the build of gtk2hs from
MacPorts.
This is a known issue already
I don't know whether its a good name or not (the ===), but I have the
following in a generic utilities file I have, and I use it every now and
then.
(===) :: (Typeable a, Typeable b, Eq b) => a -> b -> Bool
(===) x y = cast x == Just y
(Notice you don't need Eq a in the context)
On 11 June 2010
Hello Christopher,
Friday, June 11, 2010, 4:35:00 PM, you wrote:
> if xthen foo
> else if y then bar
> else if z then mu
> else zot
case () of
_ | x -> foo
| y -> bar
| otherwise -> zor
it's usually considered as "haskell way" of doing this
--
Best regards,
Bulat
On 11 June 2010 14:27, Bulat Ziganshin wrote:
> i format it this way:
>
> if x then return () else do
> bar
> continueComputation
That's a nice way of formatting! God bless optional formatting! I like
this problem-specific indentation. Another is:
if xthen foo
else if y then bar
else if
Hello Christopher,
Friday, June 11, 2010, 4:06:05 PM, you wrote:
> do if x
> then return ()
> else do bar; continueComputation
i format it this way:
if x then return () else do
bar
continueComputation
--
Best regards,
Bulatmailto:bulat.zigans...@gmai
On 11 June 2010 10:12, Roman Cheplyaka wrote:
> * Günther Schmidt [2010-06-11 01:22:27+0200]
>> there is nothing wrong with ifs as such except the won't actually
>> exit a long piece of code, the computation will continue, just in a
>> useless way.
>
> Can you clarify?
I think Günther assumed th
On Fri, Jun 11, 2010 at 12:46 AM, Felipe Lessa wrote:
>
> eqTypeable :: (Typeable a, Eq a, Typeable b, Eq b) => a -> b -> Bool
> eqTypeable x y = case cast y of
> Just y' -> x == y'
> Nothing -> False
>
...or indeed:
eqTypeable x y = cast x == Just y
___
On Mon, Jun 7, 2010 at 9:49 PM, Claus Reinke wrote:
> As others have pointed out, you can't go from operation to representation,
> but you can pair operations and expressions with their representations.
This idea is also implemented in my little 'repr' package:
http://hackage.haskell.org/package
Henning Thielemann writes:
>
> Closely related is the question of module
> names. 'transformers'+'monads-fd' are somehow an successor of 'mtl'
> and chose distinct package names, but there were module name
> clashes. They mostly hurted GHCi users, but this led to a lot of
> confusion, too.
>
> So
On Tue, 8 Jun 2010, Don Stewart wrote:
Great points: I've added them to this wiki page of for and against
points:
http://haskell.org/haskellwiki/Libraries/WhenToRewriteOrRename
Please add points as you see fit, and maybe we can come up with a
mitigation/change plan.
Closely related is th
On Friday 11 June 2010 11:50:55, Luke Palmer wrote:
> On Thu, Jun 10, 2010 at 2:10 PM, Maciej Piechotka
wrote:
> > data Named a = Named String a
> >
> > instance Functor Named where
> > f `fmap` (Named s v) = Named s (f v)
> >
> > instance Applicative Named where
> > pure x = Named "" x
> >
* Günther Schmidt [2010-06-11 01:22:27+0200]
> there is nothing wrong with ifs as such except the won't actually
> exit a long piece of code, the computation will continue, just in a
> useless way.
Can you clarify?
--
Roman I. Cheplyaka :: http://ro-che.info/
"Don't let school get in the way of
* David Powell [2010-06-11 16:09:55+1000]
> This is a slightly different issue, but isn't there a potential problem with
> threadDelay? I noticed that internally threadDelay uses gettimeofday() as
> the absolute time source (on linux at least). Isn't there potential
> problem with this since wa
On Thu, Jun 10, 2010 at 2:10 PM, Maciej Piechotka wrote:
> data Named a = Named String a
>
> instance Functor Named where
> f `fmap` (Named s v) = Named s (f v)
>
> instance Applicative Named where
> pure x = Named "" x
> (Named s f) <*> (Named t v) = Named (s ++ "(" ++ t ++ ")") (f v)
T
On Friday 11 June 2010 07:47:03, Martin Drautzburg wrote:
> On Friday, 11. June 2010 00:12:03 Daniel Fischer wrote:
>
> Thanks Daniel.
>
> > Upgrade. We're at 6.12 now!
>
> Did that. Everything is available now.
>
> I am still having trouble with the test function. First it seems I need
> braces, s
Günther Schmidt wrote:
>
> I'm just re-reading the book again, this time doing the exercises though :)
>
> Is there a site with solutions for the exercises?
Unless you count the haskell-cafe and beginners mailing lists as sites,
I don't know any sites which have the solutions. ;)
Problem 3.3.3
Hi.
This is probably "I must be blind department"
I have a very basic strip down echo cgi that runs with apache2.
When I try to modfi it to be a FastCGI instead and run it with spawn-fcgi
with nginx
It don't behave as expected.
I suppose that the line that don't get any data is mn <- getInputFP
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