waitingMinutesElapsed function

int waitingMinutesElapsed(
  1. DateTime? since,
  2. DateTime now
)

Whole minutes elapsed since the current waiting stretch began (issue #450): 0 while unknown, otherwise floor of the difference. Pure.

Implementation

int waitingMinutesElapsed(DateTime? since, DateTime now) =>
    since == null ? 0 : now.difference(since).inMinutes;