[Haskell-cafe] Trying to make a calculator

[Johannes Waldmann]

> But now my assignment is a lot tougher than I thought so I'll need some 
> guidelines.

I'm pretty sure your course instructor has already given you 
the exact guidelines that are required, in her lecture. 

There's hundreds of ways to "make a calculator",
and it really depends on what the teacher wants to emphasize,
in the context of the lecture.