Represents up-to-date information about some condition or state of an external entity that updates in real-time. More...
#include <LastingEvent.hpp>
Inheritance diagram for dxfcpp::LastingEvent:
Public Types | |
| using | Ptr = std::shared_ptr<LastingEvent> |
| The alias to a type of shared pointer to the LastingEvent object. | |
Detailed Description
Represents up-to-date information about some condition or state of an external entity that updates in real-time.
For example, a Quote is an up-to-date information about best bid and best offer for a specific symbol.
Lasting events are conflated for each symbol. Last event for each symbol is always delivered to event listeners on subscription, but intermediate (next-to-last) events are not queued anywhere, they are simply discarded as stale events. More recent events represent an up-to-date information about some external entity.
Lasting events can be used with DXFeed::getLastEvent() and DXFeed::getLastEvents methods to retrieve last events for each symbol.
Note, that subscription to all lasting events of a specific type via WildcardSymbol::ALL symbol object does not benefit from the above advantages of lasting events.
