is there a better way to write this without using ...

# arrow

[Hexa]

is there a better way to write this without using the try catch

override fun f1(): Either<Errors.ApplicationError, AWSClient> =
            Try {
                try {
                    // logic1 here
                } catch (ex: Exception) {
                   // if logic1 throws exception then try logic2 in here
                }
            }.toEither().mapLeft {
                (Errors.UnexpectedError("Unexpected error: ${it}"))
            }

[kartoffelsup]

Something like this maybe?

kotlin
fun f1(): IO<AWSClient> = IO {
  tryToConnect()
}.handleErrorWith { ignored: Throwable ->
  IO { tryADifferentApproach() }
}

and then use the AWSClient inside the IO via map and flatMap

[kioba]

Try has the capability to recovery form exception recoverWith and it also safe agains exception if you return a Try again.

[kioba]

fun f1() = Try{ logic1() }
  .recoverWith{ Try{ logic2() } }
  .toEither()

[Hexa]

thanks guys. recoverWith seems neater so i'll stick with that

[raulraja]

If you want to make it FP you should not use Try unless the function is already suspended. Try can't support side effects suspension and is therefore impure. IO is the best option here as @kartoffelsup pointed out.

Try { boom() } // runs `boom()`
IO { boom() } // suspends `boom()` until you are ready to run