TVariant.h File Reference

#include "TVariantMeta.h"
#include "Templates/EnableIf.h"
#include "Templates/IsConstructible.h"
#include "Templates/Decay.h"

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Classes
struct	TInPlaceType< T >
struct	FEmptyVariantState
class	TVariant< T, Ts >
struct	TIsVariant< T >
struct	TIsVariant< TVariant< Ts... > >
struct	TIsVariant< T & >
struct	TIsVariant< T && >
struct	TIsVariant< const T >
struct	TVariantSize< TVariant< Ts... > >
struct	TVariantSize< T & >
struct	TVariantSize< T && >
struct	TVariantSize< const T >

Functions
template<typename Func , typename... Variants, typename = typename TEnableIf<UE::Core::Private::TIsAllVariant<typename TDecay<Variants>::Type...>::Value>::Type>
decltype(auto)	Visit (Func &&Callable, Variants &&... Args)
template<typename... Ts>
FArchive &	operator<< (typename UE::Core::Private::TAlwaysFArchive< TVariant< Ts... > >::Type &Ar, TVariant< Ts... > &Variant)

Function Documentation

operator<<()

template<typename... Ts>

FArchive & operator<< ( typename UE::Core::Private::TAlwaysFArchive< TVariant< Ts... > >::Type & Ar, TVariant< Ts... > & Variant )

inline

Serialization function for TVariants.

In order for a TVariant to be serializable, each type in its template parameter pack must:

1. Have a default constructor. This is required because when reading the type from an archive, it must be default constructed before being loaded.
2. Implement the FArchive& operator<<(FArchive&, T&) function. This is required to serialize the actual type that's stored in TVariant.

Definition at line 259 of file TVariant.h.

Visit()

template<typename Func , typename... Variants, typename = typename TEnableIf<UE::Core::Private::TIsAllVariant<typename TDecay<Variants>::Type...>::Value>::Type>

decltype(auto) Visit	(	Func &&	Callable,
		Variants &&...	Args )

Apply a visitor function to the list of variants

Definition at line 233 of file TVariant.h.

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