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- // Boost.Convert test and usage example
- // Copyright (c) 2009-2016 Vladimir Batov.
- // Use, modification and distribution are subject to the Boost Software License,
- // Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
- #include <boost/convert.hpp>
- #include <boost/convert/stream.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #ifdef ONLY_FOR_DEMONSTRATION_PURPOSES
- //[default_converter_declaration_simple
- struct boost::cnv::by_default : boost::cnv::cstream {};
- //]
- #endif
- //[default_converter_declaration_formatted
- struct boost::cnv::by_default : boost::cnv::cstream
- {
- by_default() { (*this)(std::uppercase)(std::hex); }
- };
- //]
- int
- main(int, char const* [])
- {
- //[default_converter_example1
- // No explicit converter provided. boost::cnv::by_default is used.
- int i = boost::convert<int>("F").value_or(-1);
- std::string s = boost::convert<std::string>(255).value_or("bad");
- // 'i' and 's' are converted using boost::cnv::cstream
- // with std::uppercase and std::hex formatting applied.
- BOOST_TEST(i == 15); // 15(10) = F(16)
- BOOST_TEST(s == "FF"); // 255(10) = FF(16)
- //]
- return boost::report_errors();
- }
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