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/*!
@file
Defines `boost::hana::detail::operators::adl`.
@copyright Louis Dionne 2013-2016
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
*/
#ifndef BOOST_HANA_DETAIL_OPERATORS_ADL_HPP
#define BOOST_HANA_DETAIL_OPERATORS_ADL_HPP
#include <boost/hana/config.hpp>
BOOST_HANA_NAMESPACE_BEGIN namespace detail { namespace operators {
//! @ingroup group-details
//! Enables [ADL](http://en.cppreference.com/w/cpp/language/adl) in the
//! `hana::detail::operators` namespace.
//!
//! This is used by containers in Hana as a quick way to automatically
//! define the operators associated to some concepts, in conjunction
//! with the `detail::xxx_operators` family of metafunctions.
//!
//! Note that `adl` can be passed template arguments to make it unique
//! amongst a set of derived classes. This allows a set of derived classes
//! not to possess a common base class, which would disable the EBO when
//! many of these derived classes are stored in a Hana container. If EBO
//! is not a concern, `adl<>` can simply be used.
template <typename ...>
struct adl { };
}} BOOST_HANA_NAMESPACE_END
#endif // !BOOST_HANA_DETAIL_OPERATORS_ADL_HPP
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