Language/Generics/function_A02_t01.dart

/*
 * Copyright (c) 2019, 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 generic function declaration introduces a generic function into
 * the enclosing scope. Consider a function invocation expression of the form
 * [f<T1, . . . , Tl>(...)], where the static type of [f] is a generic function
 * type with formal type parameters [X1 extends B1], . . . , [Xm extends Bm].
 * It is a compile-time error if [m <> l].
 * @description checks that error appears if number of type parameters is
 * @author iarkh@unipro.ru
 */

void testme1<T>() {}
T1 testme2<T1, T2>(T2) {}
void testme3<T1, T2, T3>() {}

main() {
  testme1();
  testme1<int>();
  testme1<dynamic>();
  testme1<int, dynamic>();              //# 01: compile-time error
  testme1<dynamic, int, int>();         //# 02: compile-time error

  testme2(1);
  testme2<int>(12);                     //# 03: compile-time error
  testme2<dynamic>(333);                //# 04: compile-time error
  testme2<int, dynamic>(289);
  testme2<dynamic, int, int>(1);        //# 05: compile-time error

  testme3();
  testme3<int>();                       //# 06: compile-time error
  testme3<int, dynamic>();              //# 07: compile-time error
  testme3<dynamic, int, int>();
  testme3<dynamic, int, int, String>(); //# 08: compile-time error
}