[Haskell-cafe] why PArr slower than list ?

Brandon S. Allbery KF8NH allbery at ece.cmu.edu
Wed Nov 14 22:35:51 EST 2007

On Nov 14, 2007, at 21:50 , Albert Lee wrote:

> dotp :: Num a => [:a:] -> [:a:] -> a

You're forcing Num a => a here, whereas the list one probably  
specializes to Integer.  Seems like a bad way to go to me;  
polymorphism is expensive.  (Whether it's *that* expensive, I  
couldn't tell you.)

brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH

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