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hana/example/functor/fill.cpp
Louis Dionne 307d3d0ec8 Huge reorganization and refactoring.
- Split type class instances into separate files
- Instances provided automatically by a type class are actually MCDs
- Test each instance in a single file, not one file per method
- Refactor the operator system to fix the ADL-related bug.
2014-08-18 19:26:29 -04:00

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/*
@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/assert.hpp>
#include <boost/hana/tuple.hpp>
#include <boost/hana/maybe.hpp>
using namespace boost::hana;
int main() {
//! [main]
BOOST_HANA_CONSTEXPR_ASSERT(
fill('x', list(1, '2', 3.3, nullptr)) == list('x', 'x', 'x', 'x')
);
BOOST_HANA_CONSTANT_ASSERT(fill('x', nothing) == nothing);
BOOST_HANA_CONSTEXPR_ASSERT(fill('x', just('y')) == just('x'));
//! [main]
}