3 ms·

Actually the "true" implementation is printElements arrayOfStrings = traverse putStrLn arrayOfStrings main = printElements ["Hello", "World"] but the

by tome 9y ago

Actually the "true" implementation is printElements arrayOfStrings = traverse putStrLn arrayOfStrings main = printElements ["Hello", "World"] but the difference between map and traverse is sufficient for your point to still hold water.

yawaramin 9y ago
I think we would actually use `mapM_` rather than `traverse`.
- tome 9y ago
  Or rather `traverse_`. (I still don't know why `traverse` is not renamed `mapA`.)
  - yawaramin 9y ago
    Interesting, I don't see `traverse_` in Prelude in 8.0.2 that I have on my machine.
    - tome 9y ago
      It's not in Prelude, it's in Data.Foldable.