When to use NSData and nsmutabledata in Java?
A static byte buffer that bridges to Data; use NSData when you need reference semantics or other Foundation-specific behavior. NSData and its mutable subclass NSMutableData provide data objects, or object-oriented wrappers for byte buffers.
Do you need NSFileHandle to write to public files?
YES if the operation succeeds, otherwise NO. This method may not be appropriate when writing to publicly accessible files. To securely write data to a public location, use NSFileHandle instead. For more information, see Securing File Operations in Secure Coding Guide.
How is NSData used in Swift and Objective-C?
For more information about value types, see Working with Cocoa Frameworks in Using Swift with Cocoa and Objective-C (Swift 4.1). NSData provides methods for atomically saving their contents to a file, which guarantee that the data is either saved in its entirety, or it fails completely.
Is there a limit to the size of NSData?
The size of the data is subject to a theoretical limit of about 8 exabytes (1 EB = 10¹⁸ bytes; in practice, the limit should not be a factor). NSData is toll-free bridged with its Core Foundation counterpart, CFData.
How are data objects initialized in Apple Developer?
Initializes a data object with the content of the file at a given path. Initializes a data object with the content of the file at a given path. Initializes a data object with the data from the location specified by a given URL. Initializes a data object with the data from the location specified by a given URL.
How is NSData bridged to the foundation framework?
NSData is toll-free bridged with its Core Foundation counterpart, CFData. See Toll-Free Bridging for more information on toll-free bridging. The Swift overlay to the Foundation framework provides the Data structure, which bridges to the NSData class and its mutable subclass NSMutableData.