Language/Expressions/Assignment/variable_assignment_t05.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 Evaluation of an assignment a of the form v = e proceeds as
/// follows:
/// Let d be the innermost declaration whose name is v or v =, if it exists.
/// ...
/// If d is the declaration of a local variable, the expression e is evaluated to
/// an object o. Then, the variable v is bound to o unless v is final or const,
/// in which case a dynamic error occurs. If no error occurs, the value of the
/// assignment expression is o.
/// @description Checks that an assignment of the form v = e where v is a
/// variable declared outside of a closure is evaluated correctly inside of it.
/// @author msyabro


import '../../../Utils/expect.dart';

class A {
  foo() {
    var i = 0;
    return () => i = i + 1;  //an assignment inside a closure
  }
}

main() {
  var f = new A().foo();
  Expect.equals(1, f());
  Expect.equals(2, f());
}