[marcosdumay]

Haskell has a problem in that people think about the basic libraries as deprecated, but won't deprecate them due to backward compatibility. Thus, people starting on it will get plenty of slow and unsafe constructs, while people used to it only look at the fast and safe ones.

There should be warnings all over the Prelude and basic libraries documentation.

[windlep]

Yup, agreed. The #haskell channel on FreeNode has been great about providing feedback on what libraries one should use for performance.