Hi

 

I'm not especially experienced in using haskell, and I could use some help.

 

As part of a project, I'm trying to construct a data type that can represent three values as a 'triple' (as opposed to a 'tuple'), and then make a function so that I can sort these values into ascending order.

 

I'm having a few problems with the code that I have at the minute (I suspect its riddled with errors!)

 

type Triple = Triple {

    entry 1 :: a;

    entry 2 :: a;

    entry 3 :: a;

    sortTriple :: Triple a -> Triple a;

    } deriving (Show, Eq)

where

    sortTriple t@(Triple x y z)

        | (y<x) = sortTriple (Triple y x z)

        | (z<y) = sortTriple (Triple x z y)

        | otherwise = t

 

Hope you guys can help me, sorry if this seems trivial - but I'm only a beginner!  If you could explain/correct any errors I'd appreciate it, as I am trying to learn what to do and what not to do, not just arrive at a working program.

 

Thanks

S. Midley