G'day all.
Quoting Maurício <[EMAIL PROTECTED]>:
> but I see that I can't because ** only operates on floats. Is there an
> equivalent operator that works on integers? How should I do that?
Prelude> :t (**)
(**) :: forall a. (Floating a) => a -> a -> a
Prelude> :t (^)
(^) :: forall a b. (Integra
Hi,
I'm trying to do this:
let f n = mod (n**5) 12
but I see that I can't because ** only operates on floats. Is there an
equivalent operator that works on integers? How should I do that?
Thanks,
Maurício
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On 13/06/2005, at 8:29 PM, Henning Thielemann wrote:
On Sat, 11 Jun 2005, Thomas Sutton wrote:
The end goal in all of this is that the user (perhaps a logician
rather than a computer scientist) will describe the calculus they
wish to use in a simple DSL. This DSL will then be translated into
Has
Hello Gracjan,
Tuesday, June 14, 2005, 4:36:26 PM, you wrote:
>> it's an error in GHC 6.4/win32
>>
GP> :)
GP> How do I take care of that?
use `+RTS -M' to increase it.
you can include this optiion in executable, so user don't need to
specify it each time. see somewhere in GHC docs
--
Best reg
Bulat Ziganshin wrote:
Hello Gracjan,
Tuesday, June 14, 2005, 1:29:09 PM, you wrote:
GP> Documentation says:
GP> -Msize
GP> [Default: unlimited] Set the maximum heap size to size bytes. The
GP> heap normally grows and shrinks according to the memory requirements of
GP> the program...
Hello Gracjan,
Tuesday, June 14, 2005, 1:29:09 PM, you wrote:
GP> Documentation says:
GP> -Msize
GP> [Default: unlimited] Set the maximum heap size to size bytes. The
GP> heap normally grows and shrinks according to the memory requirements of
GP> the program...
GP> GHC 6.4 says:
GP> Heap
Simon Marlow wrote:
On 13 June 2005 11:30, Gracjan Polak wrote:
My space problems continued... :)
Follow up :)
I have some ForeignPtr's, with finalizers (finalizerFree only). And I
have lazyly produced list of those (yes, there is some unsafePerformIO
magic behind, but I think I got this
Sebastian Sylvan wrote:
On 6/13/05, Simon Marlow <[EMAIL PROTECTED]> wrote:
I presume you're running GHC. There's no way to increase the priority
of a thread - GHC's scheduler doesn't have a concept of priorities.
Just out of curiousity, what scheme does GHC use for scheduling threads?
For extra fun, notice that you can make declarations like:
data (Unit u) => Kilo u = Kilo u
instance (Unit u) => Unit (Kilo u) where
shortName (Kilo u) = "k" ++ shortName u
which behaves in ghci like:
*Main> UnitValue (Kilo Meter) 30
30km
- Cale
On 14/06/05, Adde <[EMAIL PROTECTED]> wrote:
> Cale Gibbard gmail.com> writes:
>
> >
> > Perhaps you want
> > data UnitValue u n =
> > (Unit u, Num n) => UnitValue {uUnit :: u, uValue :: n}
> >
>
> I tried adding UnitValue as an instance of class Show, but I can't figure out
> how to tell t
On 14/06/05, Adde <[EMAIL PROTECTED]> wrote:
> While we're at it, I tried adding a class Length in between Unit and Meter,
> like
> this:
>
> class Unit u where
> shortName :: u -> String
>
> class (Unit u) => Length u
>
> instance Length Meter where
> shortName u = "m"
>
> >From the i
> What you want is a technique called "existential types". The wiki page
> is here: http://haskell.org/hawiki/ExistentialTypes
Thanks, I stumbled upon Existential Types earlier but ofcourse I tried to use
them with labeled records.
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While we're at it, I tried adding a class Length in between Unit and Meter, like
this:
class Unit u where
shortName :: u -> String
class (Unit u) => Length u
instance Length Meter where
shortName u = "m"
>From the information I can find on the web subclassing should include all
of the
Cale Gibbard gmail.com> writes:
>
> Perhaps you want
> data UnitValue u n =
> (Unit u, Num n) => UnitValue {uUnit :: u, uValue :: n}
>
I tried adding UnitValue as an instance of class Show, but I can't figure out
how to tell the compiler that u is a Unit and m is a Num (shouldn't it be a
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