CODEWITHSUNDEEP
scala
Siddhanjay Godre
Siddhanjay Godre

Reputation: 151

Convert Option[Int] to String and back to Option[Int]

I have an API which converts an Option[Int] to a String. I want to convert this back to an Option[Int]. What's the best way of doing this in Scala?

val x = Some(1)
val y = x.toString
val z: Option[Int] = ???  // Expected value is Some(1) from y

Upvotes: 0

Views: 529

Answers (1)

Mario Galic
Mario Galic

Reputation: 48400

In Scala 2.13

y match { 
  case s"Some($x)" => x.toIntOption
  case _ => None
}

In Scala 2.12

val someInt = """Some\((\d+)\)""".r
y match { 
  case someInt(x) => Try(x.toInt).toOption
  case _ => None
}

Upvotes: 2

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