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Learning Object-Oriented Programming

By : Gaston C. Hillar

3.3 (3)

Learning Object-Oriented Programming

3.3 (3)

By: Gaston C. Hillar

Overview of this book

If you're a Python, JavaScript, or C# developer and want to learn the basics of object-oriented programming with real-world examples, then this book is for you.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Objects Everywhere

1. Objects Everywhere

Recognizing objects from nouns

Generating blueprints for objects

Recognizing attributes/fields

Recognizing actions from verbs – methods

Organizing the blueprints – classes

Object-oriented approaches in Python, JavaScript, and C#

Summary

2. Classes and Instances

2. Classes and Instances

Understanding classes and instances

Understanding constructors and destructors

Declaring classes in Python

Customizing constructors in Python

Customizing destructors in Python

Creating instances of classes in Python

Declaring classes in C#

Customizing constructors in C#

Customizing destructors in C#

Creating instances of classes in C#

Understanding that functions are objects in JavaScript

Working with constructor functions in JavaScript

Creating instances in JavaScript

Summary

3. Encapsulation of Data

3. Encapsulation of Data

Understanding the different members of a class

Protecting and hiding data

Working with properties

Understanding the difference between mutability and immutability

Encapsulating data in Python

Encapsulating data in C#

Encapsulating data in JavaScript

Summary

4. Inheritance and Specialization

4. Inheritance and Specialization

Using classes to abstract behavior

Understanding inheritance

Understanding method overloading and overriding

Understanding operator overloading

Taking advantage of polymorphism

Working with simple inheritance in Python

Working with simple inheritance in C#

Working with the prototype-based inheritance in JavaScript

Summary

5. Interfaces, Multiple Inheritance, and Composition

5. Interfaces, Multiple Inheritance, and Composition

Understanding the requirement to work with multiple base classes

Working with multiple inheritance in Python

Interfaces and multiple inheritance in C#

Working with composition in JavaScript

Summary

6. Duck Typing and Generics

6. Duck Typing and Generics

Understanding parametric polymorphism and duck typing

Working with duck typing in Python

Working with generics in C#

Working with duck typing in JavaScript

Summary

7. Organization of Object-Oriented Code

7. Organization of Object-Oriented Code

Thinking about the best ways to organize code

Organizing object-oriented code in Python

Organizing object-oriented code in C#

Organizing object-oriented code in JavaScript

Summary

8. Taking Full Advantage of Object-Oriented Programming

8. Taking Full Advantage of Object-Oriented Programming

Putting together all the pieces of the object-oriented puzzle

Refactoring existing code in Python

Refactoring existing code in C#

Refactoring existing code in JavaScript

Summary

Index

Index

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Working with multiple inheritance in Python

We will take advantage of multiple inheritance of classes in Python. First, we will declare the base classes that we will use to create other classes that inherit from them. Then, we will create subclasses that inherit from a pair of classes. We will work with instances of these subclasses that inherit from more than one class. Finally, we will analyze the usage of abstract base classes as another way of achieving the same goal with a more strict structure.

Declaring base classes for multiple inheritance

The following lines show the code for the ComicCharacter class in Python:

class ComicCharacter:
    def __init__(self, nick_name):
        self._nick_name = nick_name

    @property
    def nick_name(self):
        return self._nick_name

    def draw_speech_balloon(self, message, destination):
        pass

    def draw_thought_balloon(self, message):
        pass

The preceding class declares a nick_name read-only property, a draw_speech_ballon method...

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Tech Concepts

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Programming languages

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