NSString object initialized by reading data from the file at a given path and returns by reference the encoding used to interpret the characters.
- iOS 2.0+
- macOS 10.4+
- tvOS 9.0+
- watchOS 2.0+
A path to a file.
Upon return, if the file is read successfully, contains the encoding used to interpret the file at
path. For possible values, see
If an error occurs, upon returns contains an
NSErrorobject that describes the problem. If you are not interested in possible errors, pass in
NSString object initialized by reading data from the file named by
path. The returned object may be different from the original receiver. If the file can’t be opened or there is an encoding error, returns