Retrieves the metadata for a view by calling the extraction operator for the container immediately invoking the projection operator. More...
Static Public Member Functions | |
static return_type | apply (View *vw) |
Public Types | |
using | return_type = std::pair< bool, md_wrapper_t * > |
Retrieves the metadata for a view by calling the extraction operator for the container immediately invoking the projection operator.
Returns the metadata in the polymorphic metadata::view_wrapper.