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// isEmpty returns non-boolean
class Casey(a: Int) { def isEmpty = this; def get = this }
object Casey { def unapply(a: Casey) = a }
// no isEmpty method at all
class Dingy(a: Int) { def get = this }
object Dingy { def unapply(a: Dingy) = a }
object Test {
def main(args: Array[String]) {
val Casey(x1) = new Casey(1)
val Dingy(x2) = new Dingy(1)
println(s"$x1 $x2")
}
}
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