``` val session IO lt Option lt String gt gt = IO just None kotlinlang #arrow

``` val session: IO<Option<String>> = ...

simon.vergauwen

07/01/2019, 9:19 AM

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val session: IO<Option<String>> = IO.just(None)
OptionT(session).getOrElseF(IO.monad()) { createSession() }

This also works but it relies on mtl which will be moved to a seperate module.

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