Used for adding compute items to a DataBox without copying or moving any data from the original DataBox More...

#include <ObservationBox.hpp>

Public Types
using	compute_item_tags = tmpl::list< ComputeTags... >
	A list of all the compute item tags.

using	tags_list = tmpl::push_back< typename DataBoxType::tags_list, ComputeTags... >
	A list of all tags.

Public Member Functions
	ObservationBox (const ObservationBox &rhs)=default

ObservationBox &	operator= (const ObservationBox &rhs)=default

	ObservationBox (ObservationBox &&rhs)=default

ObservationBox &	operator= (ObservationBox &&rhs)=default

	ObservationBox (gsl::not_null< DataBoxType * > databox)
	Create an `ObservationBox` that can also retrieve things out of the `databox` passed in.

template<typename Tag >
const auto &	get () const
	Retrieve the tag `Tag`, should be called by the free function db::get.

DataBoxType &	databox ()
	Retrieve the underlying DataBox.

void	reset ()
	Reset all the compute items, forcing reevaluation.

Detailed Description

template<typename DataBoxType, typename... ComputeTags>
class ObservationBox< tmpl::list< ComputeTags... >, DataBoxType >

Used for adding compute items to a DataBox without copying or moving any data from the original DataBox

The intended use-case for this class is during IO/observing where additional compute tags are needed only for observation. The memory used by those compute tags does not need to be persistent and so we'd like a light-weight class to handle the on-demand computation.

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

src/DataStructures/DataBox/ObservationBox.hpp

Public Types

Public Member Functions

Detailed Description