> You can also define a lifting function, that "lifts" functions on lists
> to your datatype.
>
> liftSS :: ([Int] -> a) -> SS -> a
> liftSS f (SS xs) =3D f xs
>
> and so write=20
> liftSS (take 5) (SS [1..100])
> for instance.
>
> but this only works for functions with one list argument.
You probably want
lift0SS :: [Int] -> SS
lift0SS xs = SS xs
lift1SS :: ([Int] -> [Int]) -> SS -> SS
lift1SS f (SS xs) = SS (f xs)
lift2SS :: ([Int] -> [Int] -> [Int]) -> SS -> SS -> SS
lift2SS f (SS xs) (SS ys) = SS (f xs ys)
etc.
--KW 8-)
--
: Keith Wansbrough, MSc, BSc(Hons) (Auckland) ------------------------:
: PhD Student, Computer Laboratory, University of Cambridge, England. :
: (and recently of the University of Glasgow, Scotland. [><] ) :
: Native of Antipodean Auckland, New Zealand: 174d47' E, 36d55' S. :
: http://www.cl.cam.ac.uk/users/kw217/ mailto:[EMAIL PROTECTED] :
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