6. Duck Typing and Generics | Learning Object-Oriented Programming

Sign In Start Free Trial

Book Overview & Buying
Table Of Contents
Feedback & Rating

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

Customer Reviews

3.3 (3)

5 star

0%

4 star

66.7%

3 star

0%

2 star

33.3%

1 star

0%

Working with duck typing in Python

We will use the Animal base class to generalize the requirements for animals. First, we will specialize the base class in two subclasses: Dog and Frog. Then, we will create a Party class that will be able to work with instances of any Animal subclass through duck typing. We will work with a party of dogs and a party of frogs.

Then, we will create a HorseDeeJay class and generate a subclass of the Party class named PartyWithDeeJay. The new subclass will work with instances of any Animal subclass and any instance that provides the properties and methods declared in the HorseDeeJay class through duck typing. We will work with the party of dogs with a DJ.

Declaring a base class that defines the generic behavior

We will create many classes that require the following import statement:

import random

Now, we will declare a base class named Animal:

class Animal:
    dance_characters = ""
    spelled_sound_1 = ""
    spelled_sound_2 = ""
    spelled_sound_3 = ""

   ...

Visually different images

CONTINUE READING

83

Tech Concepts

36

Programming languages

73

Tech Tools

Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.

Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.

50+ new titles added per month and exclusive early access to books as they are being written.

Learning Object-Oriented Programming

Search

Your notes and bookmarks