Checks if it's time to update the display.
Note: this method is public so that using classes can determine whether they need to perform any internal update before calling display().
TODO: this would be better done with a lazy char[] version of format(), which only calls the lazy delegate if it *is* time to update.
true if the display update interval has passed
See Implementation
Checks if it's time to update the display.
Note: this method is public so that using classes can determine whether they need to perform any internal update before calling display().
TODO: this would be better done with a lazy char[] version of format(), which only calls the lazy delegate if it *is* time to update.