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Computer Programming for Absolute Beginners

You're reading from   Computer Programming for Absolute Beginners Learn essential computer science concepts and coding techniques to kick-start your programming career

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Product type Paperback
Published in Jul 2020
Publisher Packt
ISBN-13 9781839216862
Length 430 pages
Edition 1st Edition
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Author (1):
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Joakim Wassberg Joakim Wassberg
Author Profile Icon Joakim Wassberg
Joakim Wassberg
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Table of Contents (19) Chapters Close

Preface 1. Section 1: Introduction to Computer Programs and Computer Programming
2. Chapter 1: Introduction to Computer Programs FREE CHAPTER 3. Chapter 2: Introduction to Programming Languages 4. Chapter 3: Types of Applications 5. Chapter 4: Software Projects and How We Organize Our Code 6. Section 2: Constructs of a Programming Language
7. Chapter 5: Sequence – The Basic Building Block of a Computer Program 8. Chapter 6: Working with Data – Variables 9. Chapter 7: Program Control Structures 10. Chapter 8: Understanding Functions 11. Chapter 9: When Things Go Wrong – Bugs and Exceptions 12. Chapter 10: Programming Paradigms 13. Chapter 11: Programming Tools and Methodologies 14. Section 3: Best Practices for Writing High-Quality Code
15. Chapter 12: Code Quality 16. Other Books You May Enjoy Appendix A: How to Translate the Pseudocode into Real Code 1. Appendix B: Dictionary

Avoiding conflicts using namespaces

When writing code, you will constantly name things. The problem is, what if you give something a name that is already being used? We now know that the code for an application can consist of thousands of lines of code divided into hundreds of files. How can you make sure that the names you give something are not already taken? We also learned that we can install packages with code that others have written. How can we make sure that they have not given their packages names that we have already used? Or how can we make sure that a package we install is not using names that another package we already installed is using?

As you can see, handling names can be tricky. Let's look at an example. In Chapter 8, Understanding Functions, we will discuss what a function is and how it works. For this example, all we need to know about functions is that they have a name and consist of several lines of code. We use the function name to call it, which will...

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