Language/Expressions/Function_Expressions/static_type_dynamic_async_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 The static type of a function literal of the form
/// (T1 a1,...,Tn an, [Tn+1 xn+1 = d1,...,Tn+k xn+k = dk]) async {s} is
/// (T1,...,Tn, [Tn+1 xn+1,...,Tn+k xn+k]) -> Future.
/// In any case where Ti, 1 <= i <= n + k, is not specified, it is considered
/// to have been specified as dynamic.
/// @description Checks that it is a compile error if a function literal of
/// the form (T1 a1,...,Tn an, [Tn+1 xn+1 = d1,...,Tn+k xn+k = dk]) async {s}
/// with two parameters is assigned to a variable of a function type with the
/// same parameters and int return type.
/// @compile-error
/// @author ngl@unipro.ru


typedef int futureFuncParam(int p1, [int p2]);

main() {
  futureFuncParam ffp1 = (int p1, [int? p2]) async { return 5; };
}