Type Property


Value is an NSData instance containing the data written to a memory stream.


static let dataWrittenToMemoryStreamKey: Stream.PropertyKey


Use this property when you have an output-stream object instantiated to collect written data in memory. The value of this property is read-only.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

Learn more about using Apple's beta software