Unwrap value from IO

Question

I have got a constant l in ghci. And when I put: :t l I got IO ((), Stack EnvEval) Now, I would like to get Stack EnvEval in another constant- something like: let second = giveMeSecond l. How to get it?

Answer 1

ghci executes within IO so you can bind it with <-:

(_, second) <- l