36 lines
1.0 KiB
C++
36 lines
1.0 KiB
C++
// Copyright (c) 2009-2016 Vladimir Batov.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
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//[lexical_cast_headers1
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#include <boost/convert.hpp>
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#include <boost/convert/lexical_cast.hpp>
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#include <boost/detail/lightweight_test.hpp>
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using std::string;
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using boost::convert;
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using boost::lexical_cast;
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struct boost::cnv::by_default : boost::cnv::lexical_cast {};
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//]
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int
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main(int, char const* [])
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{
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//[lexical_cast_example1
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int i1 = lexical_cast<int>("123"); // Throws if the conversion fails.
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int i2 = convert<int>("123").value(); // Throws if the conversion fails.
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int i3 = convert<int>("uhm").value_or(-1); // Returns -1 if the conversion fails.
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string s1 = lexical_cast<string>(123);
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string s2 = convert<string>(123).value();
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BOOST_TEST(i1 == 123);
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BOOST_TEST(i2 == 123);
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BOOST_TEST(i3 == -1);
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BOOST_TEST(s1 == "123");
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BOOST_TEST(s2 == "123");
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//]
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return boost::report_errors();
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}
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