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import scala.language.{ reflectiveCalls }
object Test
{
type Foo = { def update(x: Int, value: String): Unit }
type Foo2 = { def update(x: Int, value: String): Int }
type Foo3 = { def update(x: Int, value: String): Array[Int] }
def alen() = {
type L1 = { def length: Int }
def len(p: L1) = p.length
val x: L1 = Array(1,2,3)
len(x)
}
type A1 = { def apply(x: Int): String }
def arrApply(a: A1, x: Int) = a(x)
def main(args: Array[String]): Unit = {
val arr = new Array[String](3)
val p1: Foo = arr
def a1 = p1(0) = "b"
val p2: Foo2 = new { def update(x: Int, value: String) = { p1(1) = "o" ; 1 } }
def a2 = p2(0) = "c"
val p3: Foo3 = new { def update(x: Int, value: String) = { p1(2) = "b" ; Array(1) } }
def a3 = p3(10) = "hi mom"
a1 ; a2 ; a3 ;
assert(arr.mkString == "bob")
assert(alen() == 3)
assert(arrApply(arr, 1) == "o")
assert(arrApply(new { def apply(x: Int) = "tom" }, -100) == "tom")
}
}
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