Variant.h File Reference

emulates std::visit for one visitor More...

#include <algorithm>
#include <array>
#include <cassert>
#include <functional>
#include <type_traits>
#include <utility>
#include <variant>
#include <stdexcept>

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Classes
struct	Variant::detail::VisitHelperReturn< Visitor, Variant >
	Help to define Visit() below. More...
struct	Variant::detail::type_identity< T >
	Standard in C++20. More...

Namespaces
namespace	Variant
namespace	Variant::detail

Typedefs
template<typename T >
using	Variant::detail::deduced_variant = typename decltype(deduce_variant(std::declval< T >()))::type

Functions
template<typename Visitor , typename Variant >
auto	Variant::detail::VisitHelperBad (Visitor &&, Variant &&) -> typename VisitHelperReturn< Visitor &&, Variant && >::type
	Help to define Visit() below. More...
template<size_t Index, typename Visitor , typename Variant >
decltype(auto)	Variant::detail::VisitHelperFunction (Visitor &&vis, Variant &&var)
	Help to define Visit() below. More...
template<size_t Index, typename Visitor , typename Variant >
auto	Variant::detail::TypeCheckedVisitHelperFunction (Visitor &&vis, Variant &&var) -> typename VisitHelperReturn< Visitor &&, Variant && >::type
	Help to define Visit() below. More...
template<size_t... Indices, typename Visitor , typename Variant >
decltype(auto)	Variant::detail::VisitHelper (std::index_sequence< Indices... >, Visitor &&vis, Variant &&var)
	Help to define Visit() below. More...
auto	Variant::detail::deduce_variant (...) -> void
	Unevaluated. More...
template<typename... Types>
auto	Variant::detail::deduce_variant (std::variant< Types... > &v) -> type_identity< std::remove_reference_t< decltype(v)> >
template<typename... Types>
auto	Variant::detail::deduce_variant (std::variant< Types... > &&v) -> type_identity< std::remove_reference_t< decltype(v)> >
template<typename... Types>
auto	Variant::detail::deduce_variant (const std::variant< Types... > &v) -> type_identity< std::remove_reference_t< decltype(v)> >
template<typename... Types>
auto	Variant::detail::deduce_variant (const std::variant< Types... > &&v) -> type_identity< std::remove_reference_t< decltype(v)> >
template<typename ForwardType , typename Variant >
decltype(auto)	Variant::detail::forward_variant (Variant &var)
template<typename ForwardType , typename Variant >
decltype(auto)	Variant::detail::forward_variant (const Variant &var)
template<typename Visitor , typename Variant , typename VariantBase = detail::deduced_variant<Variant &&>>
decltype(auto)	Variant::Visit (Visitor &&vis, Variant &&var)
	Mimic some of std::visit, for the case of one visitor only. More...

Detailed Description

emulates std::visit for one visitor

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Audacity: A Digital Audio Editor

Paul Licameli split from MemoryX.h

Definition in file Variant.h.