On 7/27/11, Richard O'Keefe o...@cs.otago.ac.nz wrote:
A quick web search for Mac OS X gcc binary turned up
http://hpc.sourceforge.net/index.php
with binary releases of GCC 4.6 for Lion and Snow Leopard.
This requires Developer Tools, but that isn't XCode, and it's
on the OS X DVD.
27/07/2011 4:25 PM, Tom Murphy kirjutas:
On 7/27/11, Richard O'Keefe o...@cs.otago.ac.nz wrote:
A quick web search for Mac OS X gcc binary turned up
http://hpc.sourceforge.net/index.php
with binary releases of GCC 4.6 for Lion and Snow Leopard.
This requires Developer Tools, but that isn't
On Tue, Jul 26, 2011 at 11:14 PM, Alexander Solla alex.so...@gmail.com wrote:
data OrderType = Market Size | Limit LimitPrice Expiration Size | Stop
(Either Percent Price)
newtype Sell = Sell OrderType
newtype Buy = Buy OrderType
newtype Order = Order (Either Buy Sell)
size :: Order - Int
Okay, you're all scaring me again. I'm supposed to be teaching a class
this next school year, on Haskell programming, to middle schoolers aged
12 to 13. Some of the students will be using Macs, and I'm again very
confused about the situation of the Haskell platform on MacOS. There
are different
On Wed, Jul 27, 2011 at 8:09 AM, Chris Smith cdsm...@gmail.com wrote:
Alternatively, maybe it would it be easier to have the Mac users install
VMWare's free version and I can just have them install Windows or Linux
in that? Or does it also have weird dependency issues like this, too?
On Wed, Jul 27, 2011 at 05:55, Tom Murphy wrote:
This may sound ignorant because, well, it is ignorant: I know very
little about the underlying mechanics here.
Installing the Haskell Platform currently requires XCode developer tools.
To get XCode on my 10.6 machine, I...
... will check
This should be mapM_ and 'ghc -Wall' spots this problem since 6.12.
The compiler (7.04) doesn't tell me anything about it.
Henning It seems that it is no longer part of -Wall.
Indeed, that's not part of -Wall.
http://www.haskell.org/ghc/docs/7.0.4/html/users_guide/options-sanity.html
Am I
On 27 July 2011 17:42, Paul R paul.r...@gmail.com wrote:
This should be mapM_ and 'ghc -Wall' spots this problem since 6.12.
The compiler (7.04) doesn't tell me anything about it.
Henning It seems that it is no longer part of -Wall.
Indeed, that's not part of -Wall.
Hem hem ... I should never try to write anything sensible before putting
my thick glasses. -w does not turn ON all warnings, but turns them OFF,
so my previous comment regarding swapping its definition with -Wall is
just nonsense. Sorry for the noise.
Still, do you think there could be room for
On 27 July 2011 17:56, Paul R paul.r...@gmail.com wrote:
Hem hem ... I should never try to write anything sensible before putting
my thick glasses. -w does not turn ON all warnings, but turns them OFF,
so my previous comment regarding swapping its definition with -Wall is
just nonsense. Sorry
Dear Haskellians,
A new C9 video in the series!
So, you folks already know most of this... except for maybe the
generalization of the Conway construction!
Best wishes,
--greg
-- Forwarded message --
From: Charles Torre ...
Date: Tue, Jul 26, 2011 at 1:12 PM
Subject: C9 video
On 27 July 2011 10:31, Greg Meredith lgreg.mered...@biosimilarity.com wrote:
Dear Haskellians,
A new C9 video in the series!
So, you folks already know most of this... except for maybe the
generalization of the Conway construction!
Best wishes,
--greg
Thanks for the heads up! I love these
Hi everyone!
I have data declaration like this:
data MyTable = MyTableOne Int String | MyTableTwo Int String String
and function that insert new row in tables:
newRow :: MyTable - IO Int
newRow (MyTableOne fld1 fld2 ) = .
newRow (MyTableTwo fld1 fld2 fld3 ) = ..
That work perfectly, I
XCode 4.1 is free on the Mac App Store; but that requires OSX 10.7;
they seem to have removed Xcode 4 that used to be $5 there. I can
still download Xcode 4 on my developer account, but that isn't
available to people who don't pay up.
I think Apple is making a good case here for bundling gcc and
To get XCode on my 10.6 machine, I...
I had quite a hunt recently to find the most recent XCode for my
not-so-recent mac... so I'll share what I found:
If you are a registered developer (free reg is fine) with apple go to
http://connect.apple.com/
Hit the link to developer tools, and you will
On 19 July 2011 17:22, Adam Chlipala ad...@impredicative.com wrote:
http://www.impredicative.com/ur/demo/crud1.html
The example involves a library component encapsulating functionality like
that of Ruby on Rails's scaffolding: automatic generation of a standard
web-based admin interface to
Excerpts from Christopher Done's message of Wed Jul 27 12:26:08 +0200 2011:
Is TemplateHaskell fair game? Because if so these problems are not
hard. Yesod employs static typing for templates. HaskellDB achieves
injectionless static type checking even without TemplateHaskell, and
templatepg has
http://developer.apple.com/devcenter/mac/index.action
Go there. Log in (free account). Download Xcode 3.2.6. If you want the full
complement of blessed UNIX-y tools, you have to get Xcode. Bundling things with
the HP is just going to bloat that download and confuse new users more (and my
god,
Christopher Done wrote:
On 19 July 2011 17:22, Adam Chlipalaad...@impredicative.com wrote:
http://www.impredicative.com/ur/demo/crud1.html
[...] This is not done by type-checking individual
invocations of the admin-interface component. Rather, the component is
checked at a static
On 27 July 2011 13:58, Adam Chlipala ad...@impredicative.com wrote:
Maybe, but I don't think you've outlined any solutions that meet my
criteria. The key property is what I've highlighted in my self-quote above:
the challenge is to type-check _the_code_generator_, not just the individual
I'm always glad to see videos like this. I wish more people could have that
much fun playing with math ;).
It wouldn't really be suitable for your application but another interesting
generalization is to insert the 'Either' at the top level:
data ConwayT m a
= Pure a
| ConwayT
For any who are interested, here's a quick and dirty Haskell version of the
generalized Conway game monad transformer described in the video. It uses two
newtypes, L and R, to select from two possible implementations of the Monad
class.
(all the LANGUAGE pragmas are just to support a derived
Dang, I should have played with both versions before sending this. The 'R'
instance has a very obvious error:
return x = R (ConwayT (return (Left x)) mzero)
should be changed to
return x = R (ConwayT mzero (return (Left x)))
Sorry!
-- James
On Jul 27, 2011, at 9:28 AM, James Cook
On Tue, 26 Jul 2011 14:17:08 -0700 (PDT)
Donn Cave d...@avvanta.com wrote:
Quoth Manfred Lotz manfred.l...@arcor.de,
...
I'm not quite sure I understand what you mean. Stack overflow comes
from this:
forM_ msgs (\x - fetch con x = print)
If I change it to:
mapM_ (\x
On 27 July 2011 10:45, Sergiy Nazarenko nazarenko.ser...@gmail.com wrote:
Hi everyone!
Hi,
I have data declaration like this:
I try to use typeclasses,
class GetRow a where
hasID :: Int - IO a
instance GetRow MyTableOne where
hasID myid = return [(MyTableOne 1 name)]
instance GetRow
Quoth Clive Brettingham-Moore hask...@brettingham-moore.net,
To get XCode on my 10.6 machine, I...
I had quite a hunt recently to find the most recent XCode for my
not-so-recent mac... so I'll share what I found:
Were you able to look on your install CD?
Donn
Hi,
I am looking for Haskell libraries to do approximate string matching:
http://en.wikipedia.org/wiki/Approximate_string_matching
I need this to reduce a set of English word variants with spelling errors to
a single canonical dictionary entry.
Any libraries to work with spelling will also help.
Quoth Manfred Lotz manfred.l...@arcor.de,
...
The problem seems to lie in the HaskellNet package. If for example I
only fetch a specific message
m - fetch con 2092
having a size of some 1.2m then I get the same stack overflow.
If at runtime I specify +RTS -K40M -RTS it works but takes
How does one pass authentication info to the SMTP server when using the
package STMPClient? Thanks!
Jay
___
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
Hello,
I guess I should stick my hand up as the supposed maintainer of HaskellNet.
Unfortunately I can't say that I know the code that well. Two years ago I
rescued it
from bitrot cabalized it and when I couldn't get any response from the
original author put myself down as the maintainer.
It
On Wed, 27 Jul 2011 09:47:52 -0700 (PDT)
Donn Cave d...@avvanta.com wrote:
Quoth Manfred Lotz manfred.l...@arcor.de,
...
The problem seems to lie in the HaskellNet package. If for example I
only fetch a specific message
m - fetch con 2092
having a size of some 1.2m then I get the
Quoth Manfred Lotz manfred.l...@arcor.de,
In the end the only thing I need is to get the full message because I
want to feed bogofilter to learn that a message is ham or spam.
For the time being I decided to write my own program to fetch the data
because it is a good exercise for a Haskell
On Wed, 27 Jul 2011, dokondr wrote:
Hi,
I am looking for Haskell libraries to do approximate string matching:
http://en.wikipedia.org/wiki/Approximate_string_matching
I need this to reduce a set of English word variants with spelling errors to a
single canonical dictionary entry.
Any
On Wed, 2011-07-27 at 08:27 +0100, Tim Cowlishaw wrote:
(Perhaps wandering slightly O/T, but...) Having done some teaching in
similar circumstances before (although not with Haskell), I'd highly
recommend this approach. In fact, I'd probably have all the students,
regardless of OS install
On Wed, 2011-07-27 at 07:20 -0400, Jack Henahan wrote:
Bundling things with the HP is just going to bloat that download
and confuse new users more (and my god, the dep-chasing... the
number of libs that might have to be piled in on top of it could
be absurd).
I don't understand this. Are
Dear James,
This is so cool! It's so natural to express this as a monad transformer.
It's great insight and it's just the sort of insight that Haskell and this
way of thinking about computation makes possible. Bravo!
Best wishes,
--greg
On Wed, Jul 27, 2011 at 6:33 AM, James Cook
I know I can do the following from a command prompt:
$ runghc WC quux.txt
How do I do this in WinGHCi? I know I have to first load the file like this:
Prelude :load WC
But then what? This doesn't work:
*Main WC quux.txt
interactive:1:1: Not in scope: data constructor `WC'
interactive:1:6:
On Jul 27, 2011 3:30 AM, Sean Leather leat...@cs.uu.nl wrote:
To get XCode on my 10.6 machine, I...
... will check out the related discussion:
http://thread.gmane.org/gmane.comp.lang.haskell.cafe/89745
I remember this thread from last month, but several of the details
have changed
On Tue, Jul 26, 2011 at 11:58 PM, Tim Cowlishaw t...@timcowlishaw.co.ukwrote:
On Tue, Jul 26, 2011 at 11:14 PM, Alexander Solla alex.so...@gmail.com
wrote:
data OrderType = Market Size | Limit LimitPrice Expiration Size | Stop
(Either Percent Price)
newtype Sell = Sell OrderType
On Wed, Jul 27, 2011 at 8:30 AM, Christopher Done
chrisd...@googlemail.com wrote:
On 27 July 2011 13:58, Adam Chlipala ad...@impredicative.com wrote:
Does this static type system support metaprogramming strong enough to
implement my challenge problem with the level of static guarantee for all
On Fri, Jul 22, 2011 at 1:54 AM, Olexander Kozlov ookoz...@gmail.com wrote:
Jason, thank you for your help. The hint for using -s option is very
valuable.
It is good to see people answering questions about Haskell here on
haskell-cafe.
stackoverflow is another good place to ask.
This is
On 28 July 2011 04:56, Paul Reiners paul.rein...@gmail.com wrote:
I know I can do the following from a command prompt:
$ runghc WC quux.txt
How do I do this in WinGHCi? I know I have to first load the file like this:
Prelude :load WC
But then what? This doesn't work:
*Main WC quux.txt
On 28 July 2011 03:58, Chris Smith cdsm...@gmail.com wrote:
On Wed, 2011-07-27 at 08:27 +0100, Tim Cowlishaw wrote:
(Perhaps wandering slightly O/T, but...) Having done some teaching in
similar circumstances before (although not with Haskell), I'd highly
recommend this approach. In fact, I'd
Use memoization. Here's an example:
cabal-install MemoTrie
import Data.MemoTrie
fib_fix :: (Integer - Integer) - Integer - Integer
fib_fix _ n | n 0 = error invalid input
fib_fix _ 0 = 1
fib_fix _ 1 = 1
fib_fix rec n = rec (n-1) + rec (n-2)
-- 'tie the knot' on a recusrive function
func_fix
Welcome to issue 192 of the HWN, a newsletter covering developments in
the Haskell community. This release covers the week of July 17 to
23, 2011.
[1] http://goo.gl/8hDku
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