Prelude.Aff vs Prelude.AffMaybe

[Malgefor]

Hi all,
When lifting a Task/Task into Aff-monad, I see both Prelude.Aff and Prelude.AffMaybe methods who can perform that operation.
Is there a difference / best-practice?

Thanks in advance!

[louthy]

AffMaybe(...) allows you to return a Fin<A>, that gives you the opportunity to lift a lambda that could fail (i.e. return Fin.Succ or Fin.Fail). Aff(...) doesn't allow that, so it expects the lifted function to always succeed (i.e. it's pure).

Obviously, you could throw an exception in the Aff lifted function, so it's not entirely clear cut. However, best practice is to avoid throwing exceptions for 'known' errors (i..e. exceptions are only for exceptional events, like running out of memory).

[Malgefor]

I see, thanks for the reply! :)