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object Test {
def main(args: Array[String]): Unit = {
Test1.test()
Test2.test()
Test3.test()
}
}
object Test1 {
class Bar[T](n: Int) {
println(n)
}
implicit def const[T](x: T): Bar[T] = new Bar[T](1)
def bar[T](e: T): Any = new Bar[T](2)
def bar[T](e: Bar[T]): Any = new Bar[T](3)
val b: Bar[Int] = new Bar[Int](4)
def test(): Unit = {
bar(b)
bar(5)
}
}
object Test2 {
trait A; trait B
class C1 {
def f(x: A): Unit = println("A")
}
class C2 extends C1 {
def f(x: B): Unit = println("B")
}
object Test extends C2 with App {
implicit def a2b(x: A): B = new B {}
def test(): Unit = {
f(new A {})
f(new B {})
}
}
def test(): Unit = Test.test()
}
object Test3 {
trait A; trait B
class C extends A with B
def fr(x: A): A = {
println("frA")
x
}
def fr(x: B): B = {
println("frB")
x
}
def test(): Unit = {
val a: A = fr(new C)
val b: B = fr(new C)
}
}
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