40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
// Boost.Convert test and usage example
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// 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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#include <boost/convert.hpp>
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#include <boost/convert/stream.hpp>
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#include <boost/detail/lightweight_test.hpp>
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#ifdef ONLY_FOR_DEMONSTRATION_PURPOSES
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//[default_converter_declaration_simple
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struct boost::cnv::by_default : boost::cnv::cstream {};
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//]
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#endif
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//[default_converter_declaration_formatted
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struct boost::cnv::by_default : boost::cnv::cstream
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{
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by_default() { (*this)(std::uppercase)(std::hex); }
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};
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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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//[default_converter_example1
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// No explicit converter provided. boost::cnv::by_default is used.
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int i = boost::convert<int>("F").value_or(-1);
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std::string s = boost::convert<std::string>(255).value_or("bad");
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// 'i' and 's' are converted using boost::cnv::cstream
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// with std::uppercase and std::hex formatting applied.
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BOOST_TEST(i == 15); // 15(10) = F(16)
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BOOST_TEST(s == "FF"); // 255(10) = FF(16)
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//]
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return boost::report_errors();
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}
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