Discrete Mathematics Using a Computer
By John O’Donnell, Cordelia Hall and Rex Page
Running Haskell:
Create a file with a name like mydefs.hs
The extension hs stands for Haskell script.
Store two lines in your file:
y=x+1
x=2*3
Run GHCi or Hugs
> :load
mydefs
>x
6
>y
7
>x*y
42
>