init(timeIntervalSinceReferenceDate:)
Returns a date object initialized relative to 00:00:00 UTC on 1 January 2001 by a given number of seconds.
Declaration
init(timeIntervalSinceReferenceDate ti: TimeInterval)Parameters
- ti:
The number of seconds to add to the reference date (00:00:00 UTC on 1 January 2001). A negative value means the receiver will be earlier than the reference date.
Return Value
An NSDate object initialized relative to the absolute reference date by ti seconds.
Discussion
This method is a designated initializer for the NSDate class and is declared primarily for the use of subclasses of NSDate. When you subclass NSDate to create a concrete date class, you must override this method.