# xpc_string_create_with_format_and_arguments(_:_:) Creates an XPC object that represents a C-string that the specified format string and argument list pointer generate. ``` func xpc_string_create_with_format_and_arguments(_ fmt: UnsafePointer, _ ap: CVaListPointer) -> xpc_object_t ``` ## Parameters `fmt` The `printf(3)`-style format string from which to construct the final C-string to be boxed. `ap` A pointer to the arguments which correspond to those specified in the format string. ## Return Value A new string object. --- 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)