---
title: "appendingFormat(_:_:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/stringprotocol/appendingformat(_:_:)"
---

# appendingFormat(_:_:)

Returns a string created by appending a string constructed from a given format string and the following arguments.

## Declaration

```swift
func appendingFormat<T>(_ format: T, _ arguments: any CVarArg...) -> String where T : StringProtocol
```