Language/Expressions/Function_Expressions/static_type_form_2_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 }) => e is
 * (T1,...,Tn, {Tn+1 xn+1,...,Tn+k xn+k }) -> T0, where T0 is the static type
 * of e.
 * In any case where Ti, 1 <= i <= n + k, is not specified, it is considered
 * to have been specified as dynamic.
 * @description Checks that a compile error occurs when assigning a
 * function literal of the form
 * (T1 a1,...,Tn an, {Tn+1 xn+1: d1, ... ,Tn+k xn+k: dk}) => e
 * where the type of e is int to a variable of a function type with
 * incompatible parameters.
 * @compile-error
 * @author kaigorodov
 */

typedef int foo(int x, String y, {double? a, double? b});

main() {
  foo f = (int x, int y, {double? a, double? b}) => 1;
}