Add adds a timing job to the default timer, which runs in interval of `interval`.

AddEntry adds a timing job to the default timer with detailed parameters.

AddOnce is a convenience function for adding a job which only runs once and then exits.

AddSingleton is a convenience function for add singleton mode job.

AddTimes is a convenience function for adding a job which is limited running times.

DefaultOptions creates and returns a default options object for Timer creation.

DelayAdd adds a timing job after delay of `interval` duration.

DelayAddEntry adds a timing job after delay of `interval` duration.

DelayAddOnce adds a timing job after delay of `interval` duration.

DelayAddSingleton adds a timing job after delay of `interval` duration.

DelayAddTimes adds a timing job after delay of `interval` duration.

SetInterval runs the job every duration of `delay`.

SetTimeout runs the job once after duration of `delay`.

JobFunc is the timing called job function in timer.

Timer is the timer manager, which uses ticks to calculate the timing interval.