mirror of
https://github.com/ecency/ecency-mobile.git
synced 2024-12-23 05:13:04 +03:00
39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
/*!
|
|
@file
|
|
Forward declares `boost::hana::fold`.
|
|
|
|
@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_FWD_FOLD_HPP
|
|
#define BOOST_HANA_FWD_FOLD_HPP
|
|
|
|
#include <boost/hana/config.hpp>
|
|
#include <boost/hana/fwd/fold_left.hpp>
|
|
|
|
|
|
BOOST_HANA_NAMESPACE_BEGIN
|
|
//! Equivalent to `fold_left`; provided for convenience.
|
|
//! @ingroup group-Foldable
|
|
//!
|
|
//! `fold` is equivalent to `fold_left`. However, it is not tag-dispatched
|
|
//! on its own because it is just an alias to `fold_left`. Also note that
|
|
//! `fold` can be called with or without an initial state, just like
|
|
//! `fold_left`:
|
|
//!
|
|
//! @code
|
|
//! fold(xs, state, f) == fold_left(xs, state, f)
|
|
//! fold(xs, f) == fold_left(xs, f)
|
|
//! @endcode
|
|
//!
|
|
//!
|
|
//! Example
|
|
//! -------
|
|
//! @include example/fold.cpp
|
|
constexpr auto fold = fold_left;
|
|
BOOST_HANA_NAMESPACE_END
|
|
|
|
#endif // !BOOST_HANA_FWD_FOLD_HPP
|