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# NSCalendar.Options

The options for arithmetic operations involving calendars.

```
struct Options
```

## Topics

### Initializers

[`init(rawValue:)`](/documentation/Foundation/NSCalendar/Options/init(rawValue:))

### Constants

[`wrapComponents`](/documentation/Foundation/NSCalendar/Options/wrapComponents)

Specifies that the components specified for an `NSDateComponents` object should be incremented and wrap around to zero/one on overflow, but should not cause higher units to be incremented.

[`matchStrictly`](/documentation/Foundation/NSCalendar/Options/matchStrictly)

Specifies that the operation should travel as far forward or backward as necessary looking for a match.

[`searchBackwards`](/documentation/Foundation/NSCalendar/Options/searchBackwards)

Specifies that the operation should travel backwards to find the previous match before the given date.

[`matchPreviousTimePreservingSmallerUnits`](/documentation/Foundation/NSCalendar/Options/matchPreviousTimePreservingSmallerUnits)

Specifies that, when there is no matching time before the end of the next instance of the next highest unit specified in the given `NSDateComponents` object, this method uses the *previous* existing value of the missing unit and preserves the lower units’ values.

[`matchNextTimePreservingSmallerUnits`](/documentation/Foundation/NSCalendar/Options/matchNextTimePreservingSmallerUnits)

Specifies that, when there is no matching time before the end of the next instance of the next highest unit specified in the given `NSDateComponents` object, this method uses the *next* existing value of the missing unit and preserves the lower units’ values.

[`matchNextTime`](/documentation/Foundation/NSCalendar/Options/matchNextTime)

Specifies that, when there is no matching time before the end of the next instance of the next highest unit specified in the given `NSDateComponents` object, this method uses the *next* existing value of the missing unit and *does not* preserve the lower units’ values.

[`matchFirst`](/documentation/Foundation/NSCalendar/Options/matchFirst)

Specifies that, if there are two or more matching times, the operation should return the first occurrence.

[`matchLast`](/documentation/Foundation/NSCalendar/Options/matchLast)

Specifies that, if there are two or more matching times, the operation should return the last occurrence.

[`NSWrapCalendarComponents`](/documentation/Foundation/NSWrapCalendarComponents)

Specifies that the components specified for an `NSDateComponents` object should be incremented and wrap around to zero/one on overflow, but should not cause higher units to be incremented.


---

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