timetable performance optimization

2026-09-25 22:27:10 +02:00
parent ef7d17033d
commit ed8e52f475
13 changed files with 391 additions and 137 deletions
@@ -36,6 +36,11 @@ extension CalendarDayArithmetic on DateTime {
      );

  DateTime subtractDays(int days) => addDays(-days);
+
+  DateTime get dateOnly => DateTime(year, month, day);
+
+  /// Monday 00:00 of this date's week.
+  DateTime get mondayOfWeek => subtractDays(weekday - 1).dateOnly;
 }

 /// Formatting helpers backed by Jiffy. Centralises the patterns that previously