On Wed, Jul 05, 2006 at 01:03:01AM +0100, Brian Hulley wrote:
Simon Peyton-Jones wrote:
Concerning other mail on this subject, which has been v useful, I've
revised the Wiki page (substantially) to take it into account.
http://hackage.haskell.org/trac/ghc/wiki/GhcPackages
Further input
Brian Hulley [EMAIL PROTECTED] writes:
because if the suggested syntax is used, import directives come in two
flavours: ones that use from to import from a different package and
ones that don't use from and therefore must refer to the current
package.
What is the current package? My
In response to Brian and Ian's helpful comments, I've added a bunch more
stuff to our proposal about packages. If I have missed anything, let me
know.
http://hackage.haskell.org/trac/ghc/wiki/GhcPackages
If you or anyone else thinks the choices made there are poor ones,
continue to say
On Fri, Jun 30, 2006 at 03:45:57PM -0700, mvanier wrote:
I'm at a loss here. Somehow, the SplitObjs option doesn't seem to be doing
the job. Any suggestions would be appreciated.
It looks like gcc 4.1 is floating all the
__asm__(\n__stg_split_marker:);
results to the top of the
Folks,
Do you have examples of using Haskell as a DSL in an environment NOT
targeted at people who know it already?
I'm thinking of using Haskell to build my Mac trading app but I'm
very concerned about dumping Haskell on the trading systems
developers. It seems that using, say, Ruby as
On Sat, 2006-07-01 at 16:36 +0100, Ian Lynagh wrote:
[resending as the original seems to have been silently eaten;
attachements are at http://urchin.earth.li/~ian/splitting/ ]
On Fri, Jun 30, 2006 at 03:45:57PM -0700, mvanier wrote:
I'm at a loss here. Somehow, the SplitObjs option
Hi,
In MissingH, I have a bunch of little functions that operate on lists.
Some, like uniq (which eliminates duplicate elements in a list), operate
on (Eq a = [a]) lists. Others, like strip (which eliminates whitespace
at the start and end), operate on Strings only.
Most functions of both types
Hi,
One thing that seems to keep biting me is strictness in do blocks.
What I want to know is the generic way to force an entire String (or
other list, perhaps from hGetContents) to be evaluated (read into RAM, I
guess) so the underlying file can be closed and do it right now.
One quick
Hi,
What I want to know is the generic way to force an entire String (or
other list, perhaps from hGetContents) to be evaluated (read into RAM, I
guess) so the underlying file can be closed and do it right now.
What I have done in the past is to take the length of the string, and
test the
On Wed, 2006-07-05 at 12:08 +0100, Neil Mitchell wrote:
Hi,
What I want to know is the generic way to force an entire String (or
other list, perhaps from hGetContents) to be evaluated (read into RAM, I
guess) so the underlying file can be closed and do it right now.
What I have done
Ian Lynagh wrote:
I think I missed where the plan to use quotes came from. What's the
purpose? Package names already have a well-defined syntax with no spaces
or other confusing characters in them, so why do we need the quotes? Or
is it just so we can have packages with the same name as
Ketil Malde wrote:
What is the current package?
The package that you're currently compiling. This now must be known at
compile time.
My impression was that from would
only be needed when there was ambiguity. (And if I wanted to type
myself to death, I'd be using Java :-) If you *have*
duncan.coutts:
On Wed, 2006-07-05 at 05:58 -0500, John Goerzen wrote:
Hi,
In MissingH, I have a bunch of little functions that operate on lists.
Some, like uniq (which eliminates duplicate elements in a list), operate
on (Eq a = [a]) lists. Others, like strip (which eliminates
Daniel Fischer [EMAIL PROTECTED] wrote:
Cool, though the problem of exploding runtime remains, it's only
pushed a little further. Now I get a 5x5 magig square in 1 s, a 6x6
in 5.4 s, but 7x7 segfaulted after about 2 1/2 hours - out of memory,
I note that your solution uses Arrays. I have
Hello John,
Wednesday, July 5, 2006, 3:04:22 PM, you wrote:
What I want to know is the generic way to force an entire String (or
other list, perhaps from hGetContents) to be evaluated (read into RAM, I
guess) so the underlying file can be closed and do it right now.
eval [] = []
eval
Hello Duncan,
Wednesday, July 5, 2006, 3:25:53 PM, you wrote:
People sometimes talk about doing a type class to cover string like
modules.
class ListLike ce e | ce-e where
head :: ce - e
instance ListLike [a] a
instance ListLike (Sequence a) a
instance ListLike ByteString
Hello Malcolm,
Wednesday, July 5, 2006, 4:30:43 PM, you wrote:
I note that your solution uses Arrays. I have recently discovered that
the standard array implementations in GHC introduce non-linear
performance profiles (wrt to the size of the array). None of the
ordinary variations of
So here are some options:
1. the proposal as it is now, keeping exposed/hidden state in the
package database, don't support available
2. Add support for available. Cons: yet more complexity!
3. Drop the notion of exposed/hidden, all packages are available.
(except for
On 2006-07-05, Duncan Coutts [EMAIL PROTECTED] wrote:
What I have done in the past is to take the length of the string, and
test the length in some way - although I guess you could call seq on
the length.
evaluate is for just that purpose.
evaluate (length input)
from the docs:
On Wed, Jul 05, 2006 at 09:38:44PM +1000, Donald Bruce Stewart wrote:
What functions are you thinking of btw? We may want to include them in
the ByteString modules anyway (possibly directly rather than in terms of
other functions, to take advantage of tricks with the representation).
On Wed, Jul 05, 2006 at 12:25:53PM +0100, Duncan Coutts wrote:
different types of input? I'd rather avoid having 3 versions, that are
exactly the same except for imports.
People sometimes talk about doing a type class to cover string like
modules.
Yes, that makes sense to me. I was
Niklas Broberg wrote:
So here are some options:
1. the proposal as it is now, keeping exposed/hidden state in the
package database, don't support available
2. Add support for available. Cons: yet more complexity!
3. Drop the notion of exposed/hidden, all packages are
Hello Donald,
Wednesday, July 5, 2006, 3:38:44 PM, you wrote:
In MissingH, I have a bunch of little functions that operate on lists.
Some, like uniq (which eliminates duplicate elements in a list), operate
on (Eq a = [a]) lists. Others, like strip (which eliminates whitespace
at the
Malcolm Wallace wrote:
Daniel Fischer [EMAIL PROTECTED] wrote:
Cool, though the problem of exploding runtime remains, it's only
pushed a little further. Now I get a 5x5 magig square in 1 s, a 6x6
in 5.4 s, but 7x7 segfaulted after about 2 1/2 hours - out of memory,
I note that your
On 7/5/06, Joel Reymont [EMAIL PROTECTED] wrote:
Do you have examples of using Haskell as a DSL in an environment NOT
targeted at people who know it already?
Lava: http://www.cs.chalmers.se/~koen/Lava/
Lava is a hardware description language based upon the functional
programming language
Hello Simon,
Wednesday, July 5, 2006, 5:50:58 PM, you wrote:
Mutable, boxed arrays in GHC have a linear GC overhead in GHC
unfortunately. This is partially fixed in GHC 6.6.
You can work around it by using either immutable or unboxed arrays, or
immutable boxed array can still have large
On Jul 5, 2006, at 3:07 PM, Niklas Broberg wrote:
Lava: http://www.cs.chalmers.se/~koen/Lava/
Excellent example, thank you Niklas!
Are you using QuickCheck for verification?
Thanks, Joel
--
http://wagerlabs.com/
___
Haskell-Cafe
Simon Peyton-Jones wrote:
In response to Brian and Ian's helpful comments, I've added a bunch
more stuff to our proposal about packages. If I have missed
anything, let me know.
http://hackage.haskell.org/trac/ghc/wiki/GhcPackages
If you or anyone else thinks the choices made there are poor
| So instead of just taking this simple solution, the wiki proposal is
instead
| destroying the beauty of the per-package namespace idea by
incorporating
| into it the existing shared namespaces with their attendant problems,
| instead of just letting the existing messy system die a natural death
On 03/07/06, Neil Mitchell [EMAIL PROTECTED] wrote:
[1,2] /= [(1,2)]
Ah, I figured we were talking at the type level.
--
-David House, [EMAIL PROTECTED]
___
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
Hello,
I use the Indirect Composite pattern a lot, and this means that
typically, especially with recursive types (such as an AST), you end up
with a lot of data-constructors. I understand that it is not
possible to have pure cyclic types (because haskell requires
iso-recursive and not
On 04/07/06, Joel Reymont [EMAIL PROTECTED] wrote:
Is there anyone trading with Haskell or interested in doing it?
Assuming you mean professional development and not Pokemon-style card
swapping, you might want to check out the 'Commercial Users' section
of the HCAR [1].
[1]:
Addendum:
(18:19:50) vincenz: anyways the haskell-cafe post is orthogonal to this safety issue
(18:20:46) vincenz:
it's about the inability to use a generic annotation data-type with any
generic indirect composite ADT without introducing a third data
constructor if one wants recursion
(18:21:33)
Joel Reymont skrev:
On Jul 5, 2006, at 3:07 PM, Niklas Broberg wrote:
Lava: http://www.cs.chalmers.se/~koen/Lava/
Excellent example, thank you Niklas!
Are you using QuickCheck for verification?
I assume you're asking if Lava (rather than Niklas) uses QuickCheck.
In Lava, you write
Simon Peyton-Jones wrote:
So instead of just taking this simple solution, the wiki proposal is
instead destroying the beauty of the per-package namespace idea by
incorporating into it the existing shared namespaces with their
attendant problems, instead of just letting the existing messy
system
Hello,I typically back up my darcs repositories on different computers. However I do always use the same structure for the different forests of darcs repositories. Lately my laptop charger has died which has led me to constantly use a usbstick to move these repositories. Therefore I have started
Am Mittwoch, 5. Juli 2006 15:50 schrieb Simon Marlow:
Malcolm Wallace wrote:
Daniel Fischer [EMAIL PROTECTED] wrote:
Cool, though the problem of exploding runtime remains, it's only
pushed a little further. Now I get a 5x5 magig square in 1 s, a 6x6
in 5.4 s, but 7x7 segfaulted after about
Joel Reymont wrote:
Is there anyone trading with Haskell or interested in doing it?
Trading financial instruments? You might be interested in the
SPJ/Eber/Seward paper Composing contracts:
http://research.microsoft.com/~simonpj/Papers/financial-contracts/contracts-icfp.htm
and also Lexifi,
Hi,
I want to develop a GUI using Haskell on Windows. As far as I can tell
the options for a reasonably high level GUI toolkit are:
* wxHaskell
* Gtk2Hs
Unfortunately I cannot find released packages for GHC 6.4.2 for either
of them - Gtk supports only 6.4.1 and wx supports only 6.4.0.
Does
I was able to build wxHaskell for ghc 6.5 that ships with
VisualHaskell and I'd say it's worth the little bit of extra work.
I followed the build instructions on the wxHaskell website plus a few
modifications that you can find in this thread:
On Jul 5, 2006, at 11:56 PM, Ashley Yakeley wrote:
Trading financial instruments? You might be interested in the SPJ/
Eber/Seward paper Composing contracts:
http://research.microsoft.com/~simonpj/Papers/financial-contracts/
contracts-icfp.htm
Yes, that paper and an hour or so on the phone
Am Mittwoch, 5. Juli 2006 21:28 schrieben Sie:
Hi Daniel,
In the paragraph below it looks like you improved the performance of
5x5 from one and one half hours to one second. Is that a typo or
should I be very, very impressed. :-)
Cheers, David
Err, neither, really. Apparently, I haven't
On Wed, 2006-07-05 at 16:06 -0700, Jason Dagit wrote:
I can't help with gtk2hs as I haven't tried it yet, but I hear the dev
community is much more alive and very helpful. My main concerns with
gtk2hs were 1) I need a native look 'n feel
This is a common misconception. Gtk+ uses the windows
On 7/5/06, Duncan Coutts [EMAIL PROTECTED] wrote:
On Wed, 2006-07-05 at 16:06 -0700, Jason Dagit wrote:
I can't help with gtk2hs as I haven't tried it yet, but I hear the dev
community is much more alive and very helpful. My main concerns with
gtk2hs were 1) I need a native look 'n feel
On Thu, 06 Jul 2006 07:56:49 +0900, Neil Mitchell [EMAIL PROTECTED]
wrote:
I want to develop a GUI using Haskell on Windows. As far as I can tell
the options for a reasonably high level GUI toolkit are:
* wxHaskell
* Gtk2Hs
Unfortunately I cannot find released packages for GHC 6.4.2 for
Package names should never appear in source files IMHO. if a package
name is in the source file, then you might as well make it part of the
module name. packages exist for 'meta-organization' of code. A way to
deal with mapping code _outside_ of the language itself, putting
packages inside the
46 matches
Mail list logo
