On Tue, Oct 21, 2008 at 9:33 PM, Duncan Coutts
[EMAIL PROTECTED] wrote:
On Tue, 2008-10-21 at 20:33 -0700, Jason Dagit wrote:
Correct me if I'm wrong, but if I want to make this work on windows I
can't use System.Posix, right? If so, what is the portable way to set
environment variables? I
I had the same problem on a Mac system, change GHC to ghc and things
will work.
I didn't even think that it was an actual bug! Ticket #379 reports the
problem.
On Tue, Oct 21, 2008 at 3:52 PM, Duncan Coutts
[EMAIL PROTECTED]wrote:
On Wed, 2008-10-22 at 00:05 +0200, Henk-Jan van Tuyl wrote:
Here's an infinite structure with logarithmic access time with natural
numbers for keys.
It's not particularily efficient for a sparse map, but if the maximum
used key is linear in the size of your problem, it gives log(n) access
time.
However, an infinite fold of insert is still _|_; you have
I would like to include a few source files
as 'executable' sections in a .cabal package
description. However, although I do want to
use main=mainDefault features, I do not want
those packages to be installed when I run
'Setup.hs install'.
Yes, just use this in the executable section:
hi,
i'm trying to get labelled records working with the current version of HList.
i've got code that looks like:
{-# language EmptyDataDecls #-}
module Tst where
import Data.HList
data Foo;foo = proxy::Proxy Foo
data Bar; bar= proxy::Proxy Bar
rec1 =
At first, make sure you have Bjarne Stroustrup book
(very important: last edition). If there's anything good
in C++, it's there. Look also at his homepage:
http://www.research.att.com/~bs/homepage.html
I got the third edition and read it a couple of times... It's not that
I'm lacking knowledge
Thomas van Noort wrote:
However, I would like a single result for the complete list of
properties instead of a result for each property. I realize that this
restricts the properties to be of the same type, but that isn't a
problem for my application.
Why not concatenate your properties into
Hello Mauricio,
Wednesday, October 22, 2008, 2:23:55 PM, you wrote:
Well, one thing I miss from C++ is the idea of acquiring resources in
constructors and releasing them in destructors, as explained here:
(Haskell uses that in 'with...' functions, like 'withFile', but the
syntax in C++
I would like to include a few source files
as 'executable' sections in a .cabal package
description. However, although I do want to
use main=mainDefault features, I do not want
those packages to be installed when I run
'Setup.hs install'.
Yes, just use this in the executable section:
On Oct 22, 2008, at 1:03 PM, Martijn van Steenbergen wrote:
Thomas van Noort wrote:
However, I would like a single result for the complete list of
properties instead of a result for each property. I realize that
this restricts the properties to be of the same type, but that
isn't a
It seems that a couple of modules in HList libraries didn't have
enough LANGUAGE pragmas (in one case, GHC 6.8.3 started to require
ScopedTypeVariables where the previous version of GHC did not). Cabal
and OOHaskell supply all needed extensions on the command line, and so
see no problems. I have
Thomas van Noort wrote:
However, I would like a single result for the complete list of
properties instead of a result for each property. I realize that this
restricts the properties to be of the same type, but that isn't a
problem for my application.
You're types can be different, so long
I´m just thinking aloud, but, because incorporating deeper mathematics
concepts has proven to be the best solution for better and more flexible
programming languages with fewer errors, I wonder if raising the type
classes incorporating axioms can solve additional problems.
At first sight it does:
(...)
But I do want it to be built (so Setup will
check dependencies, allow me to './Setup clean'
etc.). However, I would like './Setup install'
to install just the main library.
Just in case my response to you (in a previous thread that you started)
wasn't clear, EMGM also
Bulat Ziganshin [EMAIL PROTECTED] wrote:
Hello Mauricio,
Wednesday, October 22, 2008, 2:23:55 PM, you wrote:
Well, one thing I miss from C++ is the idea of acquiring resources
in constructors and releasing them in destructors, as explained
here:
(Haskell uses that in 'with...'
Hi Alberto,
Take a look at ESC/Haskell and Sound Haskell, which provide mechanisms for
doing some of the things you want. I don't think they integrate with type
classes in the way you mention, but I think that is just a question of syntax.
http://www.cl.cam.ac.uk/~nx200/
Thanks
Neil
Generic rewriting library for regular datatypes
===
This package provides rewriting functionality for regular datatypes.
Regular datatypes are recursive datatypes such as lists, binary trees,
etc. This library cannot be used with mutually recursive
On 10/21/08 18:55, Larry Evans wrote:
On 10/21/08 17:55, Duncan Coutts wrote:
On Tue, 2008-10-21 at 09:41 -0500, Larry Evans wrote:
Just that one little piece of information, that |cabal install| , by
default, installs in ~/.cabal and then enables ghc to look there for
packages, would have
Achim Schneider wrote:
Imagine generating an HTML combinator library out of the HTML dtd.
That seems like a fairly extreme thing to want to be doing... But yeah,
if you wanted to do something like that, machine-generated is the way.
(Presumably a much more common thing to want to do is
On Wed, Oct 22, 2008 at 3:14 AM, Ryan Ingram [EMAIL PROTECTED] wrote:
Here's an infinite structure with logarithmic access time with natural
numbers for keys.
It's not particularily efficient for a sparse map, but if the maximum
used key is linear in the size of your problem, it gives log(n)
Ideas for how to make such tries
composable would encourage me to release a hackage module :-)
Have a look at code.haskell.org/gmap/api - a library for composable
maps. It currently requires huge instances in the name of efficiency
but I hope to improve that over the next couple of months. The
On Tue, 2008-10-21 at 23:36 -0700, Peter Higley wrote:
I had the same problem on a Mac system, change GHC to ghc and
things will work.
I didn't even think that it was an actual bug! Ticket #379 reports
the problem.
Thanks for reporting that.
Duncan
C:\Documents and Settings\anatolyycabal install cabal-install
Resolving dependencies...
'cabal-install-0.6.0' is cached.
Configuring cabal-install-0.6.0...
Preprocessing executables for cabal-install-0.6.0...
Building cabal-install-0.6.0...
...
Linking dist\build\cabal\cabal.exe ...
Installing:
Windows will not let you modify/delete binaries if they're running as a
process, and it won't let you delete .DLL files that're in use by
applications either (mapped to shared memory, that is.) So cabal
install cannot overwrite the cabal.exe binary after it builds it,
because it's already running.
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