Initializes a data object with the data from the location specified by a given URL.
- iOS 2.0+
- macOS 10.4+
- tvOS 9.0+
- watchOS 2.0+
The URL from which to read data.
A mask that specifies options for reading the data. Constant components are described in
A data object initialized with the data from the location specified by
Use this method to convert
data:// URLs to NSData objects. You can also use it to read short files synchronously. If you need to read potentially large files, use
input to open a stream, then read the file incrementally.