What is NSData in Swift?

What is NSData in Swift?

NSData is toll-free bridged with its Core Foundation counterpart, CFData . See Toll-Free Bridging for more information on toll-free bridging. Important. The Swift overlay to the Foundation framework provides the Data structure, which bridges to the NSData class and its mutable subclass NSMutableData .

Where does Core Data store data?

The persistent store should be located in the AppData > Library > Application Support directory. In this example you should see a SQLite database with extension . sqlite. It is possible that you don’t see the persistent store in the Application Support directory.

What is the difference between any and AnyObject?

Any and AnyObject are two special types in Swift that are used for working with non-specific types. According to Apple’s Swift documentation, Any can represent an instance of any type at all, including function types and optional types. AnyObject can represent an instance of any class type.

Is Core Data an ORM?

There is little doubt Apple’s Core Data is a robust ORM framework that belongs in the skill set of any developer programming in the iOS and Mac OSX platforms. It provides a quality ER diagramming tool, in addition to a host of programming hooks to handle data persistence in an efficient manner.

What is any and AnyObject in Swift?

What is difference between Array and NSArray?

Array is a struct, therefore it is a value type in Swift. NSArray is an immutable Objective C class, therefore it is a reference type in Swift and it is bridged to Array . NSMutableArray is the mutable subclass of NSArray . Because foo changes the local value of a and bar changes the reference.

What is the difference between NSString and string in Swift?

Secondly, in Swift String is a struct, while in Objective-C, NSString is a class and inherit from NSObject . In concept, Swift String is more likely immutable.

What is an NSArray in Swift?

NSArray creates static arrays, and NSMutableArray creates dynamic arrays. You can use arrays when you need an ordered collection of objects. NSArray is “toll-free bridged” with its Core Foundation counterpart, CFArrayRef .