Swift Tutorial - Tutorialspoint

The ability to take than more form is defined as Inheritance. Generally a class can inherit
methods, properties and functionalities from another class. Classes can be further
categorized in to sub class and super class.

 Sub Class: when a class inherits properties, methods and functions from another

class it is called as sub class

 Super Class: Class containing properties, methods and functions to inherit other

classes from itself is called as a super class

Swift classes contain superclass which calls and access methods, properties, functions and
overriding methods. Also, property observers are also used to add a property and modify
the stored or computed property methods.

Base Class

A Class that does not inherit methods, properties or functions from another class is called
as 'Base Class'.

class StudDetails {

var stname: String!

var mark1: Int!

var mark2: Int!

var mark3: Int!

init(stname: String, mark1: Int, mark2: Int, mark3: Int) {

self.stname = stname

self.mark1 = mark1

self.mark2 = mark2

self.mark3 = mark3

}

}

let stname = "swift"

let mark1 = 98

let mark2 = 89

let mark3 = 76

println(stname)

println(mark1)

24. SWIFT – INHERITANCE