dart: getters and setters in dart

Signed-off-by: Ayush Dubey <ayushdubey70@gmail.com>

Author: Ayushd70

dart/getterSetters.dart

@@ -0,0 +1,21 @@
+import 'dart:math';
+
+class Position {
+  int _x;
+  int _y;
+
+  Position(this._x, this._y);
+
+  double get rad => atan2(_y, _x);
+
+  void set x(int val) {
+    _x = val;
+  }
+}
+
+main() {
+  var p = new Position(2, 3);
+  p.x = 10;
+  print('x: ${p._x} y: ${p._y}');
+  print('rad: ${p.rad}');
+}