libtcspc.RecordLast

final class libtcspc.RecordLast(event_type, access_tag)

Bases: Node

Processor that remembers the last event of a given type.

A copy of the last event of type event_type that passed through can be retrieved at any time during execution via the RecordLastAccessor retrieved from the ExecutionContext using access_tag. It is None until an event of that type has been observed.

Parameters:

• event_type (EventType) – The event type to remember. Must be an event type that supports value conversion (so that the recorded event can be delivered to Python as an EventInstance).

• access_tag (AccessTag) – Tag used to retrieve a RecordLastAccessor from the ExecutionContext at runtime.

Notes

Events handled:

• Events matching event_type: retain a copy, then pass through.

• All other event types: pass through unchanged.

• End of input: pass through.

Bucket-carrying event types (such as HistogramEvent) are supported; recording deep-copies the event, including its bucket data.

See also

tcspc::record_last()

The underlying C++ factory function.

RecordLastAccessor

Runtime accessor providing get().