Hi All. I'm trying to load in GHCi the following code: {-# LANGUAGE Arrows #-} {-# LANGUAGE PArr, ParallelListComp #-} module Test where import Control.Arrow import Control.Parallel dotp :: Num a => [:a:] -> [:a:] -> a dotp xs ys = sumP [:x * y | x <- xs | y <- ys:] ...... Then I get the error: Not in scope 'sumP'. What I have to import to avoid this error? Where is defined sumP? Thanks in advance for any answer. Luca
On Thu, Dec 09, 2010 at 05:52:09PM +0100, Luca Ciciriello wrote:
Hi All.
I'm trying to load in GHCi the following code:
{-# LANGUAGE Arrows #-} {-# LANGUAGE PArr, ParallelListComp #-}
module Test where
import Control.Arrow import Control.Parallel
dotp :: Num a => [:a:] -> [:a:] -> a dotp xs ys = sumP [:x * y | x <- xs | y <- ys:]
......
Then I get the error:
Not in scope 'sumP'.
What I have to import to avoid this error? Where is defined sumP?
Thanks in advance for any answer.
Luca
_______________________________________________ Beginners mailing list Beginners@haskell.org http://www.haskell.org/mailman/listinfo/beginners Hi,
It seems you'll need Data.Array.Parallel.Prelude.Double, according to http://www.haskell.org/ghc/docs/6.12-latest/html/libraries/dph-par-0.4.0/Dat... this page has more info on using DPH http://www.haskell.org/haskellwiki/Data_Parallel_Haskell . -- Cheers, Jasper "Capable, generous men do not create victims, they nurture them."
participants (2)
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Jasper Lievisse Adriaanse -
Luca Ciciriello