LanguageFeatures/Set-literals/type_inference_A03_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 To infer the type of element:
///
/// If element is an expressionElement with expression e1:
///
/// If P is ? then the inferred set element type of element is the inferred type
/// of the expression e1 in context ?.
///
/// @description Checks that if P is ? then the inferred set element type of
/// element is the inferred type of the expression e1 in context ?
/// @author sgrekhov@unipro.ru

import "../../Utils/expect.dart";

void foo<X extends num>(Set<X> s) {
  Expect.isTrue(s is Set<double>);
}

void bar<X extends num>(Set<X> s) {
  Expect.isTrue(s is Set<int>);
}

main() {
  foo<double>({1});
  foo({3 + 3.14, 2.0, 1.1});
  bar({3 + 3, 2, 1});
}