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- scala> import scala.util.control.Exception.catching
- import scala.util.control.Exception.catching
- scala> def ?[T](block: => T): Option[T] = catching(classOf[NullPointerException]) opt block match {
- | case Some(t) => if (t == null) None else Some(t); case _=> None }
- $qmark: [T](block: => T)Option[T]
- scala> def lastmethodcall: String = null
- lastmethodcall: String
- scala> def npe: String = {val s: String = null; s.toString}
- npe: String
- scala> ?[String](npe)
- res27: Option[String] = None
- scala> ?[String](lastmethodcall)
- res28: Option[String] = None
- scala> def yay="foo"
- yay: java.lang.String
- scala> ?[String](yay)
- res29: Option[String] = Some(foo)
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