---
title: "CFCalendarSetMinimumDaysInFirstWeek(_:_:)"
framework: corefoundation
role: symbol
role_heading: Function
path: "corefoundation/cfcalendarsetminimumdaysinfirstweek(_:_:)"
---

# CFCalendarSetMinimumDaysInFirstWeek(_:_:)

Sets the minimum number of days in the first week of a specified calendar.

## Declaration

```swift
func CFCalendarSetMinimumDaysInFirstWeek(_ calendar: CFCalendar!, _ mwd: CFIndex)
```

## Parameters

- `calendar`: The calendar to modify.
- `mwd`: The number to set as the minimum number of days in the first week of calendar.

## See Also

### Getting and Setting Day Information

- [CFCalendarGetFirstWeekday(_:)](corefoundation/cfcalendargetfirstweekday(_:).md)
- [CFCalendarSetFirstWeekday(_:_:)](corefoundation/cfcalendarsetfirstweekday(_:_:).md)
- [CFCalendarGetMinimumDaysInFirstWeek(_:)](corefoundation/cfcalendargetminimumdaysinfirstweek(_:).md)