Creighton Hogg wrote:
Hi,
so I'm a newbie getting used to Haskell. I'm writing some
simple things like genetic algorithms in it for practice,
and I keep coming across something that really bugs me:
are there any standard libraries that allow you to
do imperative style for or while loops
How about this?
class ArbitraryDefault a where {}
instance (Integral a, Bounded a, ArbitraryDefault a) = Arbitrary a where
arbitrary = arbitraryBound
coarbitrary a = error Not implemented
instance ArbitraryDefault Word16
instance ArbitraryDefault Word32
instance ArbitraryDefault
in the foot :-).
Any explanation of undecidable instances, the good and the bad?
Joel
On Oct 27, 2005, at 6:49 PM, Bryn Keller wrote:
How about this?
class ArbitraryDefault a where {}
instance (Integral a, Bounded a, ArbitraryDefault a) = Arbitrary a
where
arbitrary
How about this?
instance Show Process where
show Stop = Stop
show (Prefix l p) = concat [(, l, -, show p, )]
show (External p q) = concat [(, show p, [] , show q, )]
Hope that helps,
Bryn
Andy Gimblett wrote:
A small stylistic question: what's the best way to build strings
Shae Matijs Erisson wrote:
Remi Turk [EMAIL PROTECTED] writes:
At least one. (Me) And, judging from the amount of references to
Python in these mailing-lists, I really doubt I'm the only one.
At least two. I also came to Haskell from Python.
Me three.
I actually met Haskell mostly by
Hi folks,
I'm looking for FTP (client) and XMLRPC (client) libraries for Haskell.
Does anyone know of any, or do I need to roll my own?
Thanks,
Bryn
___
Haskell-Cafe mailing list
[EMAIL PROTECTED]
http://www.haskell.org/mailman/listinfo/haskell-cafe
Shawn P. Garbett wrote:
I did a small search for parsing a comma seperated file in Haskell and didn't
find anything--
I threw one together a while ago:
http://www.xoltar.org/languages/haskell/CSV.hs
which isn't much different than your example, though it does handle
nested quotation marks.
Does anyone have a GHC-friendly library for accessing databases,
specifically Oracle and MSSQL? I noticed Hasql on the Haskell libraries
page, but it seems rather in the beginning stages, and I was hoping for
native DB connections rather than ODBC ones.
How are others handling database
y z - x (map (+y) z)
if you wish.
--
Hal Daume III
Computer science is no more about computers| [EMAIL PROTECTED]
than astronomy is about telescopes. -Dijkstra | www.isi.edu/~hdaume
On Wed, 16 Oct 2002, Bryn Keller wrote:
Prelude let f = \x-\y-\z-x (map (+ y) z)
interactive
