What are called Initializers in Objective-C?

Initializers in objective-C are always instance methods (-) and are simply methods that follow the convention of starting with init . Convenience initializers are in contrast to the designated initializer.

What is INIT in Xcode?

Swift init() Initialization is the process of preparing an instance of a class, structure, or enumeration for use. This process involves setting an initial value for each stored property on that instance and performing any other setup or initialization that is required before the new instance is ready for use.

How do I create a NSObject class in swift 4?

Well, the solution is to create a custom class. Create a new file and choose Cocoa Touch Class. Click Next and name the class “Person”, type “NSObject” for “Subclass of”, then click Next and Create to create the file. NSObject is what’s called a universal base class for all Cocoa Touch classes.

What is NSObject in Swift?

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 the difference between category VS extension?

Category and extension both are basically made to handle large code base, but category is a way to extend class API in multiple source files while extension is a way to add required methods outside the main interface file.

What is initialization in C?

In computer programming, initialization (or initialisation) is the assignment of an initial value for a data object or variable. Programming constructs which perform initialization are typically called initializers and initializer lists.

What is NSObject class in Swift?

What kind of class is NSObject?

The NSObject class is an abstract class; programs use instances of classes that inherit from NSObject, but never of NSObject itself. Every object is connected to the run-time system through its isa instance variable, inherited from the NSObject class.

Where is NSObject defined?

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 a category in Objective-C?

A category allows you to add methods to an existing class—even to one for which you do not have the source. Categories are a powerful feature that allows you to extend the functionality of existing classes without subclassing. Check the apple doc for the Category in Objective-C.