On Apr 21, 2008, at 3:50 , Ryan Ingram wrote:
is almost unnecessary; (btw., functions /are/ instances of Show).
Now it's my turn to call:
Prelude Test.QuickCheck> show ((\x -> x) :: Int -> Int)
<interactive>:1:0:
No instance for (Show (Int -> Int))
import Data.Function. (but it is indeed a useless instance)
A slightly less useless instance (more or less the one lambdabot
uses) is at http://www.cmu.edu.edu/~allbery/FuncShow.hs; note that it
only works for monomorphic functions (more specifically, for
functions whose parameters are Typeable).
--
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] [EMAIL PROTECTED]
system administrator [openafs,heimdal,too many hats] [EMAIL PROTECTED]
electrical and computer engineering, carnegie mellon university KF8NH
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