Language/Expressions/Constants/equals_expression_t03.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 A constant expression is an expression whose value can never
 * change, and that can be evaluated entirely at compile time.
 * A constant expression is one of the following:
 * . . .
 * • An expression of one of the forms e1 == e2 or e1 != e2 where e1 and e2 are
 *   constant expressions that evaluate to a numeric, string or boolean value
 *   or to null.
 * @description Checks that it is a compile-time error when an expression of
 * the form e1 == e2 where e1 does not evaluate to a numeric, string or boolean
 * value, is used to initialize a constant variable.
 * @compile-error
 * @author kaigorodov
 */

class A {
  const A() : a = "hello";
  final a;
}

final constList = const [
   const A() == "hello",
];

main() {
  try {
    constList is List;
  } catch (x) {}
}