Oh, I'm not saying Haskell doesn't let you express functions. What I'm saying is that functions are expressed as procedures that compute them. The nice thing a

Oh, I'm not saying Haskell doesn't let you express functions. What I'm saying is that functions are expressed as procedures that compute them. The nice thing about Haskell is that it distinguishes between procedures that may only compute functions (or diverge), and procedures with arbitrary effects.