What is an NSObject?
The NSObject defines all things that are shared between all classes that extend from it: NSObject is the root class of most Objective-C class hierarchies. Through NSObject, objects inherit a basic interface to the runtime system and the ability to behave as Objective-C objects.
What is NSObject protocol?
NSObject is the root class of all ordinary Objective C inheritance hierarchies; it’s the one class that has no superclass. For example, to ask an object what class it belongs to, you’d send it a class message (class is declared in the NSObject protocol).
Do Swift classes inherit from NSObject?
You don’t have to inherit from NSObject in Swift, but you did in Objective-C and in fact there are some behaviors you can only have if you do inherit from it.
What is Nsproxy?
An abstract superclass defining an API for objects that act as stand-ins for other objects or for objects that don’t exist yet.
What is the use of Nsobject?
The root class of most Objective-C class hierarchies, from which subclasses inherit a basic interface to the runtime system and the ability to behave as Objective-C objects.
What is Nsdictionary?
An object representing a static collection of key-value pairs, for use instead of a Dictionary constant in cases that require reference semantics.
What is NSObject in iOS?
The root class of most Objective-C class hierarchies, from which subclasses inherit a basic interface to the runtime system and the ability to behave as Objective-C objects. iPadOS 2.0+
Can a struct inherit from NSObject?
1) Structs are passed by value, Class instances by reference 2) Classes can be subclassed, Structs can’t. Whether or not the Class is a subclass of NSObject is (mostly) irrelevant. You could equally have said: class UserDetails { var userName:String?
What is the use of NSObject?
How do you use NSInvocation?
Think of it like sending an email. You open up a new email ( NSInvocation object), fill in the address of the person (object) who you want to send it to, type in a message for the recipient (specify a selector and arguments), and then click “send” (call invoke ). See Using NSInvocation for more information.
