Given the following recursive function that returns Try[Int], I get a compilation error saying
type mismatch; found : scala.util.Try[Int] required: Int
But the function returns Try[Int], what is wrong? I need the function to throw an error if Try results in Failure.
def getInt(i: Int): Try[Int] = Try {
if (i == 0)
i
else {
val j = i - 1
getInt(j) // <-- error is thrown in this line
}
}
You have a Try inside a Try now.
Try (hah!) this:
def getInt(i: Int): Try[Int] =
if (i == 0)
Success(0)
else
getInt(i-1)
method getInt return Try[Int] so you are writing it like this:
Try { if (i == 0) return integer else return Try[Int] }
To fix this you have to do it this way:
def getInt(i: Int): Try[Int] =
if (i == 0)
Success(i)
else {
val j = i - 1
getInt(j) // <-- error is thrown in this line
}
as Success extends Try this will work
