optional.h File Reference

Detailed Description

Implementation of gul14::optional.

A header file for representing optional (nullable) objects for C++14 and passing them by value. The original library is maintained at https://github.com/akrzemi1/Optional . This is the reference implementation of proposal N3793 (see http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3793.html). Optional is now accepted into Library Fundamentals Technical Specification (see http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3848.html) and into the C++17 international standard. The interface is based on Fernando Cacciola's Boost.Optional library (see http://www.boost.org/doc/libs/1_52_0/libs/optional/doc/html/index.html).

Author

Andrzej Krzemienski

Copyright

Copyright (C) 2011-2012 Andrzej Krzemienski. Use, modification, and distribution is subject to the Boost Software License, Version 1.0. (See Boost Software License - Version 1.0 or http://www.boost.org/LICENSE_1_0.txt) The idea and interface is based on Boost.Optional library authored by Fernando Luis Cacciola Carballal. Modified July, August 2019, June 2023 for GUL (Lars Froehlich).

#include <cassert>
#include <functional>
#include <initializer_list>
#include <stdexcept>
#include <string>
#include <type_traits>
#include <utility>
#include "gul14/internal.h"
#include "gul14/utility.h"

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Classes
class	gul14::optional< T >
	A class template that can either contain a value of a certain type or not. More...
class	gul14::optional< T & >
	A class template that can either contain a value of a certain type or not. More...

Namespaces
	gul14
	Namespace gul14 contains all functions and classes of the General Utility Library.