Returns the range of absolute time values that a smaller calendar unit (such as a day) can take on in a larger calendar unit (such as a month) that includes a specified absolute time.
- iOS 2.0+
- macOS 10.4+
- tvOS 9.0+
- watchOS 2.0+
The smaller calendar unit.
The larger calendar unit.
The absolute time for which the calculation is performed.
The range of absolute time values
smaller can take on in
larger at the time specified by
larger is not logically bigger than
smaller in the calendar, or the given combination of units does not make sense (or is a computation which is undefined).
You can use this method to calculate, for example, the range the Day unit can take on in the Month in which