forked from qt-creator/qt-creator
3c85058694
Change-Id: I711d5fb475ef814a1dc9d2822740e827f3f67125 Reviewed-by: Alessandro Portale <alessandro.portale@digia.com>
67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms and
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** conditions see http://www.qt.io/terms-conditions. For further information
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** use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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****************************************************************************/
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#include <boost/optional.hpp>
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#include <string>
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using namespace boost;
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struct Large
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{
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Large() { d1 = d2 = d3 = d4 = d5 = 0; }
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double d1;
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double d2;
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double d3;
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double d4;
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double d5;
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};
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void testOptional()
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{
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optional<int> i;
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optional<double> d;
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optional<Large> l;
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optional<std::string &> sr;
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optional<std::string> s;
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std::string as = "hallo";
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i = 1;
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sr = as;
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s = as;
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l = Large();
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i = 2;
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i = 3;
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}
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int main()
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{
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testOptional();
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}
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