hana/example/string/literal.cpp
2017-01-07 14:14:18 -08:00

29 lines
935 B
C++

// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include <boost/hana/assert.hpp>
#include <boost/hana/config.hpp>
#include <boost/hana/core/is_a.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/integral_constant.hpp>
#include <boost/hana/length.hpp>
#include <boost/hana/string.hpp>
namespace hana = boost::hana;
using namespace hana::literals;
// By default, this is disabled
#ifdef BOOST_HANA_CONFIG_ENABLE_STRING_UDL
constexpr auto str = "Hello world!"_s;
BOOST_HANA_CONSTANT_CHECK(str == hana::string_c<'H', 'e', 'l', 'l', 'o', ' ',
'w', 'o', 'r', 'l', 'd', '!'>);
BOOST_HANA_CONSTANT_CHECK(hana::is_a<hana::string_tag>(str));
BOOST_HANA_CONSTANT_CHECK(hana::length(str) == hana::size_c<12>);
#endif
int main() { }