Variant::detail::VisitHelperReturn< Visitor, Variant > Struct Template Reference

Help to define Visit() below. More...

#include <Variant.h>

Public Types
using	Var = std::remove_reference_t< Variant >
using	Alt = std::variant_alternative_t< 0, Var >
using	QAlt = std::conditional_t< std::is_const_v< Var >, const Alt, Alt >
using	Arg = std::conditional_t< std::is_lvalue_reference_v< Variant >, std::add_lvalue_reference_t< QAlt >, std::add_rvalue_reference_t< QAlt > >
using	type = decltype(std::invoke(std::declval< Visitor && >(), std::declval< Arg >()))

Detailed Description

template<typename Visitor, typename Variant>
struct Variant::detail::VisitHelperReturn< Visitor, Variant >

Help to define Visit() below.

Definition at line 30 of file Variant.h.

Member Typedef Documentation

Alt

template<typename Visitor , typename Variant >

using Variant::detail::VisitHelperReturn< Visitor, Variant >::Alt = std::variant_alternative_t<0, Var>

Definition at line 32 of file Variant.h.

Arg

template<typename Visitor , typename Variant >

using Variant::detail::VisitHelperReturn< Visitor, Variant >::Arg = std::conditional_t<std::is_lvalue_reference_v<Variant>, std::add_lvalue_reference_t<QAlt>, std::add_rvalue_reference_t<QAlt> >

Definition at line 35 of file Variant.h.

QAlt

template<typename Visitor , typename Variant >

using Variant::detail::VisitHelperReturn< Visitor, Variant >::QAlt = std::conditional_t< std::is_const_v<Var>, const Alt, Alt >

Definition at line 33 of file Variant.h.

type

template<typename Visitor , typename Variant >

using Variant::detail::VisitHelperReturn< Visitor, Variant >::type = decltype(std::invoke(std::declval<Visitor&&>(), std::declval<Arg>()))

Definition at line 38 of file Variant.h.

Var

template<typename Visitor , typename Variant >

using Variant::detail::VisitHelperReturn< Visitor, Variant >::Var = std::remove_reference_t<Variant>

Definition at line 31 of file Variant.h.

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The documentation for this struct was generated from the following file:

• Variant.h