Haskell Junior Tutorial
Programming Haskell is like using a calculator, but hidden behind this calculator there are hidden powers like you have never seen. I'll show you how to get to those hidden things; but first let see how you can do simple things in Haskell.
A formula like 2^3 calculates 2 to the power of 3. So here is for example how you can calculate how much people we will have Amsterdam after 30 years if currently it has 1 million people, and every year the population would grow by 2%:
Hugs> 1000000.0 * 1.02^30