Notifications for timer.
Called with the the number of times the timer has fired since this was last
called. Usually, the value of
count will be 1. If it is not 1, it means
that the timer isn't firing on schedule.
For example, if your timer is set to fire every 10 milliseconds, and
count is 2, that means it has been between 20-29 milliseconds since the
last time your timer fired. Non 1 values for a timer are rare and indicate
a system under heavy load.
Return true to reschedule the timer (if it has an interval), or false to cancel the timer (even if it has an interval).
- Bool val
Called if the timer is cancelled. This is also called if the notifier
returns false from its
- timer: Timer ref
- None val