Returns a file handle initialized for writing to the file, device, or named socket at the specified URL.
- iOS 4.0+
- macOS 10.6+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
The URL of the file, device, or named socket to access.
If an error occurs, upon return contains an
NSErrorobject that describes the problem. Pass
NULLif you do not want error information.
The initialized file handle object or
nil if no file exists at
The file pointer is set to the beginning of the file. The returned object responds only to
When using this method to create a file handle object, the file handle owns its associated file descriptor and is responsible for closing it.