object Main {
 
	trait Concat[A] { def ++ (x: A, y: A): A }
	implicit object IntConcat extends Concat[Int] {
		override def ++ (x: Int, y: Int): Int = (x.toString + y.toString).toInt
	}
 
	implicit class ConcatOperators[A: Concat](x: A) {
		def ++ (y: A) = implicitly[Concat[A]].++(x, y)
	}
 
	def main(args: Array[String]): Unit = {
		val a = 1234
		val b = 765
 
		val c = a ++ b
 
		println(c)
 
		val d = highOrderTest(a, b)(IntConcat.++)
 
		println(d)
	}
 
	def highOrderTest[A](x: A, y: A)(fun: (A, A) => A) = fun(x, y)
 
}

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