Dart vs Kotlin: operator overloading

overloading.dart

class Point {
  final int x;
  final int y;

  const Point(this.x, this.y);

  Point operator +(Point other) {
    return Point(x + other.x, y + other.y);
  }
}

void main() {
  final p1 = Point(1,1);
  final p2 = Point(3,5);
  final p3 = p1 + p2;
  print("[${p3.x},${p3.y}]");
}

overloading.kt

data class Point(
    val x: Int,
    val y: Int
) {
    operator fun plus(other: Point): Point {
        return Point(x + other.x, y + other.y)
    }
}

fun main() {
  val p1 = Point(1,1)
  val p2 = Point(3,5)
  val p3 = p1 + p2
  println("[${p3.x},${p3.y}]")
}