Just use "/" for division. % is for construction of rationals from the "underlying" numeric type.
For example, instead of "toRational x" you can write "x % 1". -- ryan 2009/3/28 michael rice <nowg...@yahoo.com>: > I may be missing something here, but this is what I intended. > > An expression of the form > > 1 > a1 + ------ > 1 > a2 + ------ > 1 > a3 + -- > a4 + ... > > Where the ai's are positive integers is called > a continued fraction. > > Function cf should take [1,2,6,5] to produce > > 1 > 1 + ----- > 1 > 2 + ----- > 1 > 6 + -- > 5 > > Michael > > > --- On Sat, 3/28/09, Brandon S. Allbery KF8NH <allb...@ece.cmu.edu> wrote: > > From: Brandon S. Allbery KF8NH <allb...@ece.cmu.edu> > Subject: Re: [Haskell-cafe] type Rational and the % operator > To: "michael rice" <nowg...@yahoo.com> > Cc: "Brandon S. Allbery KF8NH" <allb...@ece.cmu.edu>, "Duane Johnson" > <duane.john...@gmail.com>, haskell-cafe@haskell.org > Date: Saturday, March 28, 2009, 10:39 PM > > On 2009 Mar 28, at 22:36, michael rice wrote: > > import Data.Ratio > cf :: [Integer] -> Rational > cf (x:xs) = (toRational x) + (1 % (cf xs)) > cf (x:[]) = toRational x > cf [] = toRational 0 > > Data.Ratio> :load cf.hs > ERROR "cf.hs":3 - Type error in application > *** Expression : toRational x + 1 % cf xs > *** Term : toRational x > *** Type : Ratio Integer > *** Does not match : Ratio (Ratio Integer) > > Your function cf produces a Rational (Ratio Int); you're using it in the > denominator of another Ratio, which makes that Ratio's type Ratio (Ratio > Int). This is almost certainly not what you intended, but I couldn't say > what you actually want. > -- > brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allb...@kf8nh.com > system administrator [openafs,heimdal,too many hats] allb...@ece.cmu.edu > electrical and computer engineering, carnegie mellon university KF8NH > > > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe