mirror of
https://github.com/boostorg/hana.git
synced 2026-02-18 02:02:09 +00:00
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
/*
|
|
@copyright Louis Dionne 2014
|
|
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/detail/static_assert.hpp>
|
|
#include <boost/hana/list/instance.hpp>
|
|
#include <boost/hana/maybe.hpp>
|
|
#include <boost/hana/type.hpp>
|
|
#include <boost/hana/type_list.hpp>
|
|
|
|
#include <cassert>
|
|
#include <sstream>
|
|
#include <string>
|
|
#include <type_traits>
|
|
using namespace boost::hana;
|
|
|
|
|
|
int main() {
|
|
//! [to_string]
|
|
auto to_string = [](auto x) {
|
|
return (std::ostringstream{} << x).str();
|
|
};
|
|
|
|
assert(
|
|
fmap(to_string, list(1, '2', "345", std::string{"67"}))
|
|
==
|
|
list("1", "2", "345", "67")
|
|
);
|
|
|
|
BOOST_HANA_STATIC_ASSERT(fmap(to_string, nothing) == nothing);
|
|
assert(fmap(to_string, just(123)) == just("123"));
|
|
//! [to_string]
|
|
|
|
//! [add_pointer]
|
|
BOOST_HANA_STATIC_ASSERT(
|
|
fmap(template_<std::add_pointer_t>, type_list<void, int(), char[10]>)
|
|
==
|
|
type_list<void*, int(*)(), char(*)[10]>
|
|
);
|
|
//! [add_pointer]
|
|
}
|