forked from qt-creator/qt-creator
386ca7c8dd
Change-Id: Ice592c6de9951ee3b2c4cb52ed0bb3b6770e0825 Reviewed-by: Eike Ziller <eike.ziller@digia.com>
66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
|
|
** Contact: http://www.qt-project.org/legal
|
|
**
|
|
** This file is part of Qt Creator.
|
|
**
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and Digia. For licensing terms and
|
|
** conditions see http://qt.digia.com/licensing. For further information
|
|
** use the contact form at http://qt.digia.com/contact-us.
|
|
**
|
|
** GNU Lesser General Public License Usage
|
|
** Alternatively, this file may be used under the terms of the GNU Lesser
|
|
** General Public License version 2.1 as published by the Free Software
|
|
** Foundation and appearing in the file LICENSE.LGPL included in the
|
|
** packaging of this file. Please review the following information to
|
|
** ensure the GNU Lesser General Public License version 2.1 requirements
|
|
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
|
**
|
|
** In addition, as a special exception, Digia gives you certain additional
|
|
** rights. These rights are described in the Digia Qt LGPL Exception
|
|
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include <boost/optional.hpp>
|
|
#include <string>
|
|
|
|
using namespace boost;
|
|
|
|
struct Large
|
|
{
|
|
Large() { d1 = d2 = d3 = d4 = d5 = 0; }
|
|
|
|
double d1;
|
|
double d2;
|
|
double d3;
|
|
double d4;
|
|
double d5;
|
|
};
|
|
|
|
void testOptional()
|
|
{
|
|
optional<int> i;
|
|
optional<double> d;
|
|
optional<Large> l;
|
|
optional<std::string &> sr;
|
|
optional<std::string> s;
|
|
std::string as = "hallo";
|
|
i = 1;
|
|
sr = as;
|
|
s = as;
|
|
l = Large();
|
|
i = 2;
|
|
i = 3;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
testOptional();
|
|
}
|