How to force evaluation in Haskell?

Question

I am relatively new to Haskell and I am trying to learn how different actions can be executed in sequence using the do notation. In particular, I am writing a program to ben

Answer 1

I would use the language extension -XBangPatterns, I find that quite expressive in such situations. So you would have to say "let !r = foo inputList" as in:

{-# LANGUAGE BangPatterns #-}
import System.CPUTime

benchmark :: [String] -> IO Integer
benchmark inputList = do
                         start <- getCPUTime
                         let !r = foo inputList
                         end <- getCPUTime
                         return (end - start)