optional_ref.hpp File Reference

#include "assert.hpp"
#include "nothing.hpp"
#include "tribool.hpp"
#include <memory>

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Classes
class	eagine::optional_reference_wrapper< T >
	Optional reference to an instance of type T. More...

Namespaces
	eagine
	Common code is placed in this namespace.

Functions
template<typename T >
static auto	eagine::extract (optional_reference_wrapper< T > ref) noexcept -> T &
	Overload of extract for optional_reference_wrapper.
template<typename T >
static auto	eagine::extract_or (optional_reference_wrapper< T > ref, T &fallback) noexcept -> T &
	Overload of extract_or for optional_reference_wrapper.
template<typename T , typename F >
static auto	eagine::extract_or (optional_reference_wrapper< T > ref, F &&fallback) -> std::enable_if_t< std::is_convertible_v< F, T >, T >
	Overload of extract_or for optional_reference_wrapper.

Detailed Description

Copyright Matus Chochlik. Distributed under the Boost Software License, Version 1.0. See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt