[EMAIL PROTECTED] reports the following problem.
Version: 1.4
OS: Windows NT
compiler:
configuration:
Expected behaviour:
Observed behaviour:
Will not accept (:%) in a pattern.
Transcript:
___ ___ ___ ___ __________ __________
/ / / / / / / / / _______/ / _______/ Hugs 1.4
/ /___/ / / / / / / / _____ / /______
/ ____ / / / / / / / /_ / /______ / The Nottingham and Yale
/ / / / / /___/ / / /___/ / _______/ / Haskell User's System
/__/ /__/ /_________/ /_________/ /_________/ June 1998
Copyright (c) The University of Nottingham and Yale University, 1994-1998.
Bug reports: [EMAIL PROTECTED] Web: http://www.haskell.org/hugs.
Reading file "D:\hugs\lib\Prelude.hs":
Reading file "D:\mircea\Hugs\ratiobug.hs":
Reading file "D:\hugs\lib\Ratio.hs":
Reading file "D:\mircea\Hugs\ratiobug.hs":
Dependency analysis
ERROR "D:\mircea\Hugs\ratiobug.hs" (line 4): Undefined constructor function ":%"
Ratio> :i Ratio
-- type constructor
data Ratio a
-- constructors:
(:%) :: Integral a => a -> a -> Ratio a
infixl 7 :%
-- instances:
instance Integral a => Eq (Ratio a)
instance Integral a => Ord (Ratio a)
instance Integral a => Num (Ratio a)
instance Integral a => Real (Ratio a)
instance Integral a => Fractional (Ratio a)
instance Integral a => RealFrac (Ratio a)
instance Integral a => Enum (Ratio a)
instance (Integral a, Read a) => Read (Ratio a)
instance Integral a => Show (Ratio a)
instance Eval (Ratio a)
Ratio> :i :%
Unknown reference `:%'
Ratio>
Code:
import Ratio
f :: Rational -> Integer
f (n:%d) = n
