Language/Classes/Constructors/Generative_Constructors/initializing_formals_execution_t02.dart

// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/**
 * @assertion Initializing formals are executed during the execution of
 * generative constructors detailed below. Executing an initializing formal
 * this.id causes the field id of the immediately surrounding class to be
 * assigned the value of the corresponding actual parameter, unless id is a
 * final variable that has already been initialized, in which case a runtime
 * error occurs.
 * @description Checks that a compile error occurs, if id is final instance
 * variable that has already been initialized.
 * @compile-error
 * @author ilya
 * @issue 13335
 */

class A {
  var a;
  final b = 2;
  A(this.a, this.b);
}

main() {
  new A(1, 2);
}