Whether assignment is on shift at the decomposed clock date — the pure day/hour-window match. On-shift iff some window covers both the weekday and the hour ([start, end)).
assignment
date
[start, end)
The assignments in list order.
Static
Coerce a loosely-typed (seed / hydrated) list into a Roster.
Build a Roster from already-typed assignments.
Whether
assignmentis on shift at the decomposed clockdate— the pure day/hour-window match. On-shift iff some window covers both the weekday and the hour ([start, end)).