Determine the result type of applying a visitor of type V on pointers of all types in Types..., asserting that the type is the same for all types in Types...
Declared in <folly/detail/DiscriminatedPtrDetail.h>
template<
typename V,
typename... Types>
struct VisitorResult;| Name | Description |
|---|---|
res | The result of applying the visitor to a pointer of type T. |
type | The common result type across all visited types. |