Package timerqueue implements lets you defer execution of functions to a later time using an efficient implementation based upon a priority queue and a single timer.

NewWithLocation creates a new Scheduler using the given runAt zone.

ErrAlreadyStopped is returned when an Add operation is attempted after the scheduler has already stopped.

ErrInvalidTransition is returned from start/stop when making an invalid state transition, say from preRunning to stopped.

Scheduler represents our async timer based scheduler.

Schedule defines an interface for getting the next scheduled runtime for a job.

TaskFunc represents a single task in a job.