Re: [Haskell-cafe] Is there a library that has a strict version of `sum`?

On 08/14/2018 11:22 AM, Damian Nadales wrote:

Ok, so if understood the bottom line of the answers I got from Vanessa and Hiromi the take away seems to be: if you're prototyping then stick to the lazy version of sum, otherwise use more advanced data structures (Vectors or Folds).

Are you implying that lazy functions are only good for prototyping? Or is there something wrong with sum in particular? More generally, why isn't sum working for you?