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C++ OOP
course content

Course Content

C++ OOP

C++ OOP

1. Fundamentals of OOP
Introduction to Object-Oriented ProgrammingWhy use Object-Oriented Programming?Class Creation SyntaxAttributes of the ClassMethods of the ClassStatic Members of The ClassThe This KeywordClasses and Objects Overview
2. Constructors and Destructors
What is a Constructor of the ClassConstructor and AttributesConstructor Initialization ListInitialization List PracticeConstructor DelegationConstructor Delegation PracticeWhat is a Destructor of the ClassCopy ConstructorsConstructors and Destructors Practice
3. Encapsulation Overview
Introduction to EncapsulationAccess Modifiers KeywordsAccess Modifiers PracticeAccessor and Mutator MethodsAccess and Mutator PracticeSegmentation and AggregationThe Friend Keyword
4. Inheritance Overview
Introduction to InheritanceAccess Modifiers in InheritanceMulptiple InheritanceConstructor and Destructor in InheritanceDiamond InheritanceThe Final Keyword
5. Polymorphism Overview
Introduction to PolymorphismVirtual and Override KeywordsPure Virtual MethodOperator OverloadingSummary and Overview

bookThe Final Keyword

The final keyword plays a crucial role in defining classes and controlling inheritance hierarchies. It provides developers with a powerful mechanism to restrict certain aspects of class design.

The usage of final keyword

When a class is declared as final, it indicates that the class cannot be subclassed further. In other words, it serves as the end point of the inheritance hierarchy, disallowing from deriving it.

cpp

Example

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class Example final {
    // Class members and methods
};

//  cannot derive from final base Example
class ExtendedExample: public Example {
    // Class members and methods
};

int main() {}

This feature is especially valuable when you aim to restrict the modification or extension of a specific class, or when you prefer utilizing your class using composition rather than inheritance. There is also other benefits to using it.

Aspect
Description
Enhanced Design ControlMarking classes as final enables precise control over the inheritance hierarchy, preventing unintended modifications or extensions.
Code SafetyUtilizing final enhances code safety by enforcing design decisions and reducing the risk of introducing bugs or inconsistencies through subclassing.
Performance OptimizationCompiler optimizations can be more effectively applied when certain classes are marked as final, potentially leading to improved runtime performance.
What does the `final` keyword do when applied to a class?

What does the final keyword do when applied to a class?

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Section 4. Chapter 6
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