overloaded.hpp File Reference

Overloaded utility function and class, used with std::visit. More...

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Classes
struct	chops::overloaded< Ts >

Functions
template<class... Ts>
	chops::overloaded (Ts...) -> overloaded< Ts... >

Detailed Description

Overloaded utility function and class, used with std::visit.

This utility simplifies calling visitor function objects on a std::variant based on the instantiated variant type. The code is explicitly copied from the cppreference website.

See https://en.cppreference.com/w/cpp/utility/variant/visit2 for the C++ 17 and C++ 20 version of std::visit.

The overloaded function template is not needed in C++ 20.

C++ 26 has a visit method as part of the std::variant class that is more flexible, see https://en.cppreference.com/w/cpp/utility/variant/visit for additional info.

Author

Cliff Green

Copyright

(c) 2019-2025 by Cliff Green

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