I run into the following type error:
foo :: ST s (STRef s Int) - Int
foo p = (runST (p = readSTRef))
with ghc 6.12.1
st.hs:8:16:
Couldn't match expected type `s1' against inferred type `s'
`s1' is a rigid type variable bound by
the polymorphic type `forall s1. ST s1 a' at
On Tue, May 3, 2011 at 23:14, Daniel Fischer
daniel.is.fisc...@googlemail.com wrote:
did you notice that the comment says 128KB strings for ps and lps, but they
are in fact 1MB strings:
-- 128KB strings
ps = B.replicate (2^20) 0
lps = L.replicate (2^20) 0
? If not, the throughput would
Also, it appears that crypto-api needs vast amounts of memory when
compiled with optimization enabled. The latest version 0.6.1 is
effectively unbuildable on my EeePC, which has only 1GB RAM. That
property is fairly undesirable for a library package.
Take care,
Peter
Hello Ken,
Strictly speaking, you only need Rank-2 types. This indeed the right
way to fix the problem.
Cheers,
Edward
Excerpts from Ken Takusagawa II's message of Wed May 04 02:00:49 -0400 2011:
I run into the following type error:
foo :: ST s (STRef s Int) - Int
foo p = (runST (p =
On Wed, 2011-05-04 at 02:00 -0400, Ken Takusagawa II wrote:
I run into the following type error:
foo :: ST s (STRef s Int) - Int
foo p = (runST (p = readSTRef))
with ghc 6.12.1
st.hs:8:16:
Couldn't match expected type `s1' against inferred type `s'
`s1' is a rigid type
From: Edward Kmett ekm...@gmail.com
On Tue, May 3, 2011 at 3:43 PM, Yitzchak Gale g...@sefer.org wrote:
I'm sure there are countless other natural examples of semigroups
in the wild, and that the typical non-trivial ones will benefit
from an optimized sconcat.
Sold! (modulo the
On Wed, May 4, 2011 at 7:40 AM, John Lato jwl...@gmail.com wrote:
From: Edward Kmett ekm...@gmail.com
On Tue, May 3, 2011 at 3:43 PM, Yitzchak Gale g...@sefer.org wrote:
I'm sure there are countless other natural examples of semigroups
in the wild, and that the typical non-trivial ones
On Tue, May 3, 2011 at 7:13 AM, Alberto G. Corona agocor...@gmail.com wrote:
E1610With the exception of heavy serialization usage, for example, in very
optimized RPC applications (and even there SOAP shows that this is not ever
the case), text serialization is better. The unwritten rules of
Hi,
In the following solution to problem 24, why is nub ignored?
I.e. if you do lexOrder of 0012, you get twice as many permutations as with
012, even though I have used nub.
puzzled,
Bar
-- file Euler.hs
module Euler where
import Data.List
{-
problem 24
A permutation is an ordered
On Wed, 2011-05-04 at 07:13 -0600, Barbara Shirtcliff wrote:
In the following solution to problem 24, why is nub ignored?
I.e. if you do lexOrder of 0012, you get twice as many permutations as with
012, even though I have used nub.
lexOrder :: [Char] - [[Char]]
lexOrder s
| length s == 1
On Wed, May 4, 2011 at 1:25 PM, Edward Kmett ekm...@gmail.com wrote:
On Wed, May 4, 2011 at 7:40 AM, John Lato jwl...@gmail.com wrote:
From: Edward Kmett ekm...@gmail.com
On Tue, May 3, 2011 at 3:43 PM, Yitzchak Gale g...@sefer.org wrote:
I'm sure there are countless other natural
On 4 May 2011 13:13, Barbara Shirtcliff ba...@gmx.com wrote:
Hi,
In the following solution to problem 24, why is nub ignored?
I.e. if you do lexOrder of 0012, you get twice as many permutations as with
012, even though I have used nub.
[snip]
lexOrder :: [Char] - [[Char]]
lexOrder s
|
Ah, thanks!
On May 4, 2011, at 7:21 AM, Ivan Lazar Miljenovic wrote:
On 4 May 2011 13:13, Barbara Shirtcliff ba...@gmx.com wrote:
Hi,
In the following solution to problem 24, why is nub ignored?
I.e. if you do lexOrder of 0012, you get twice as many permutations as
with 012, even though
On Wednesday 04 May 2011 15:13:07, Barbara Shirtcliff wrote:
Hi,
In the following solution to problem 24, why is nub ignored?
It isn't:
*LexOrder lexOrder 00
[0,0]
*LexOrder lexOrder 001
[01,10,*** Exception: Prelude.(!!): index too large
lexI :: Char - String - Int
lexI c s = maybe 1
On May 4, 2011, at 7:21 AM, Ivan Lazar Miljenovic wrote:
On 4 May 2011 13:13, Barbara Shirtcliff ba...@gmx.com wrote:
Hi,
In the following solution to problem 24, why is nub ignored?
I.e. if you do lexOrder of 0012, you get twice as many permutations as
with 012, even though I have used
Barbara Shirtcliff ba...@gmx.com писал(а) в своём письме Wed, 04 May
2011 16:41:07 +0300:
Also, note that lexOrder s@[_] = [s] is nicer than lexOrder s |
length s == 1 = [s].
I agree that that initial version was a little clumsy, but your
suggestion doesn't really seem to work:
On May 4, 2011, at 9:18 AM, Artyom Kazak wrote:
Barbara Shirtcliff ba...@gmx.com писал(а) в своём письме Wed, 04 May 2011
16:41:07 +0300:
Also, note that lexOrder s@[_] = [s] is nicer than lexOrder s |
length s == 1 = [s].
I agree that that initial version was a little clumsy, but your
http://vimeo.com/20717301
I really liked how he starts off with the let statement.
Regards,
Kashyap
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I tried to install haskellnet with mime-mail-0.2.x and an older
version of the text library but it still fails with the same error.
Btw, what is the best way to uninstall a package that has been
installed via cabal? (or to downgrade it, fwiw)
--
Cp
On Tue, Apr 26, 2011 at 23:31, Vincent
One of the benefits of a site like SO as a forum is the ability to
record and link to prior work, edit for technical errors, and easily
search and categorize past answers. It is also less prone to noise,
for those suffering from cafe overload.
I would also recommend SO.
My
Today I tried to install Gtk2hs. Big mistake!
Last time I tried it, it was quite easy. Now that it uses Cabal, even on
Windows you can compile this stuff from source fairly easily. It's just
that you have to fiddle with environment variables to make it find stuff.
However...
1. Since the
On May 4, 2011, at 4:50 PM, Andrew Coppin wrote:
One of the benefits of a site like SO as a forum is the ability to
record and link to prior work, edit for technical errors, and
easily
search and categorize past answers. It is also less prone to
noise,
for those suffering from
On Wednesday 04 May 2011 23:02:35, James Cook wrote:
I think Haskell questions on SO tend to the opposite extreme; no
matter how poorly thought-out the question, the Haskell community will
descend on it like a swarm of helpful piranhas.
That's a great picture. I like it.
Haskell, where
On Wed, May 4, 2011 at 5:02 PM, James Cook mo...@deepbondi.net wrote:
Haskell, on the other hand, has a small enough volume that people can at
least skim the ones from the last past day or two in a fairly small amount
of time.
They can and, in fact, do. Or at least I do, at any rate, even
On Wed, May 4, 2011 at 4:58 PM, Andrew Coppin
andrewcop...@btinternet.com wrote:
2. http://hackage.haskell.org/trac/gtk2hs/ticket/1203
Another workaround for this is to install global:
cabal install cairo --global
Ryan
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On Wednesday 04 May 2011 22:58:48, Andrew Coppin wrote:
Today I tried to install Gtk2hs. Big mistake!
Last time I tried it, it was quite easy. Now that it uses Cabal, even on
Windows you can compile this stuff from source fairly easily. It's just
that you have to fiddle with environment
On Wednesday 04 May 2011 21:57:51, Charles-Pierre Astolfi wrote:
I tried to install haskellnet with mime-mail-0.2.x and an older
version of the text library but it still fails with the same error.
I just did
$ cabal install --constraint=mime-mail 0.3 HaskellNet
and it worked fine
The problem is
lexOrder s@[_] = s
where you just give back what you receive, i.e. [Char].
But you claim to give back [[Char]].
Try [s] on the right-hand side.
On 05/04/2011 02:41 PM, Barbara Shirtcliff wrote:
On May 4, 2011, at 7:21 AM, Ivan Lazar Miljenovic wrote:
On 4 May 2011 13:13,
I just uploaded a new version of haskellnet that compiles with
mime-mail-0.3.0.
http://hackage.haskell.org/package/HaskellNet
Hope that helps -- now for some sleep...
http://hackage.haskell.org/package/HaskellNet-Rob
On Wed, May 4, 2011 at 11:28 PM, Daniel Fischer
While I haven't investigated myself, from seeing haskell build processes
in the past this is almost certainly not crypto-api's fault and is in
fact your linker's fault. If you are not using it already, try switching
to gold over ld, it may help.
--Matthew Maurer
On 05/04/2011 04:27 AM, Peter
Just 5 weeks ago,
http://thread.gmane.org/gmane.comp.lang.haskell.cafe/86738/focus=87456
Did anyone see it?
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Welcome to issue 180 of the HWN, a newsletter covering developments in
the [1]Haskell community. This release covers the week of April 24 to
30, 2011.
Announcements
Eric Kow suggested (http://goo.gl/bc4JM) the creation of a Haskell
User Group starter kit. If you have ideas in
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