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Object-oriented programming (OOP) in Swift.

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         Object-oriented programming (OOP) in Swift Object-oriented programming (OOP) is a programming paradigm that is based on the concept of "objects", which can contain both data and behavior. The fundamental concepts of OOP are encapsulation, inheritance, and polymorphism. These concepts are collectively known as the "four pillars" of OOP and are often referred to as the OOP concepts. Encapsulation: Encapsulation is the process of hiding the internal details of an object from the outside world. It is achieved by using access modifiers like "public", "private", and "protected" to control the visibility of the object's properties and methods. This allows for data hiding and data protection, and improves the security of the object. encapsulation is implemented using access control levels and access modifiers. Swift provides three levels of access control: open , public , internal , fileprivate , and private . Open : Classes, metho...
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Swift Interview Questions and Answers Part 2

         How do you use the "inout" keyword in Swift? The "inout" keyword is used to indicate that a parameter passed to a function can be modified within the function and the changes will reflect outside the function.  Inout allows you to pass a variable as an argument to a function and have the function change its value and it can also be used to pass values to a function as an inout parameter. How do you use the "mutating" keyword in Swift? The "mutating" keyword is used to indicate that a method can modify the properties of a struct or an enumeration.  The mutating keyword is used on methods that change the internal state of a struct or an enumeration. Without the mutating keyword, structs and enums are treated as value types, meaning that their properties can't be modified. How do you use the "required" keyword in Swift? The "required" keyword is used to indicate that a class initializer must be implemented by all sub...
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