# appendInterpolation(_:format:) Appends the formatted representation of a nonstring type supported by a corresponding format style. ``` mutating func appendInterpolation(_ input: F.FormatInput, format: F) where F : FormatStyle, F.FormatInput : Equatable, F.FormatOutput == AttributedString ``` ## Parameters `input` The instance to format and append. `format` A format style to use when converting `input` into an attributed string representation. ## Discussion Don’t call this method directly; it’s used by the compiler when interpreting string interpolations. The following example shows how to use a string interpolation to format a with a and append it to static text. The resulting interpolation implicitly creates a [`LocalizedStringKey`](/documentation/SwiftUI/LocalizedStringKey), which a [`Text`](/documentation/SwiftUI/Text) uses to provide its content. ``` Text("The time is \(myDate, format: Date.FormatStyle(date: .omitted, time:.complete).attributedStyle)") ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)