When doing this:
def myfunction(line: String): (Int, Option[DateTime], Option[Int]) = { // do some stuff (5, Option(null), Option(null)) }
I get the following:
an expression of type Null is ineligible for implicit conversion
I’m not sure how to fix it.
Answer
Option(null)
has a lower bound of Option[Null]
, where Null
is the bottom-type of all reference types. Int
is a value type, and not a reference type. i.e. you can’t assign null
to an Int
. So you can’t assign Option[Null]
to Option[Int]
.
Use Option.empty[Int]
or None
instead.
Attribution
Source : Link , Question Author : Bob , Answer Author : Michael Zajac