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