An example: ``` IO.async() .async { callback: (Either<Throwable, Int>) -> Unit -> ...

# arrow

[raulraja]

An example:

IO.async()
  .async { callback: (Either<Throwable, Int>) -> Unit -> 
    userFromDatabaseObservable().subscribe({ user: User ->
      callback(user.left())
    }, { error: Exception ->
      callback(error.right())
    })
  }

[stepango]

What the difference if i'll call

IO.async()
  .async { ... }

vs

IO.async { ... }

?