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object Test {
def call(k: (Int, Int) => Unit): Unit = ???
def test = call({ case (x, y) => ()})
trait X extends Function1[Int, String]
implicit def f2x(f: Function1[Int, String]): X = ???
({case _ if "".isEmpty => ""} : X) // allowed, implicit view used to adapt
// ({case _ if "".isEmpty => 0} : X) // expected String, found Int
def unary[T](a: T, b: T, f: ((T, T)) => T): T = f((a, b))
unary(1, 2, (x, y) => x)
unary(1, 2, (x: Int, y) => x)
unary(1, 2, (x: Int, y: Int) => x)
val xs = List(1, 2, 3)
def f(x: Int, y: Int) = x * y
xs.zipWithIndex.map(_ + _)
xs.zipWithIndex.map(f)
}
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