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object testSome {
val x: Option[String] = Some("foo")
val x1: Option[Int] = Some(3)
val y: Option[String] = None
val y1: Option[Int] = None
Console.println(x.isEmpty) // x ne null
Console.println(x1.isEmpty)
Console.println(x.get) // x
Console.println(x1.get)
def f(x:String) = Some(x)
x.flatMap(&f)
}
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