--- title: "components(style:fields:)" framework: foundation role: symbol role_heading: Type Method path: "foundation/formatstyle/components(style:fields:)" --- # components(style:fields:) Returns a style for formatting a date interval in terms of specific date components. ## Declaration ```swift static func components(style: Date.ComponentsFormatStyle.Style, fields: Set? = nil) -> Self ``` ## Parameters - `style`: The style to use for the fields, such as doc://com.apple.foundation/documentation/Foundation/Date/ComponentsFormatStyle/Style-swift.struct/abbreviated or doc://com.apple.foundation/documentation/Foundation/Date/ComponentsFormatStyle/Style-swift.struct/narrow. - `fields`: A set of date component fields to include in the formatted output. ## Return Value Return Value A date format style that uses the specified style and fields. ## Discussion Discussion Use this type method when the call point allows the use of Date.ComponentsFormatStyle. You typically do this when calling the formatted(_:) method of a Range. The following example creates a 120-day date range, and then uses a Date.ComponentsFormatStyle to express this as a count of weeks and days: let date = Date() let futureDate = Calendar.current.date(byAdding: .day, value: 120, to: date)! let interval = (date..