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Go Programming - From Beginner to Professional - Second Edition

You're reading from  Go Programming - From Beginner to Professional - Second Edition

Product type Book
Published in Mar 2024
Publisher Packt
ISBN-13 9781803243054
Pages 680 pages
Edition 2nd Edition
Languages
Author (1):
Samantha Coyle Samantha Coyle
Profile icon Samantha Coyle
Toc

Table of Contents (30) Chapters close

Preface 1. Part 1: Scripts
2. Chapter 1: Variables and Operators 3. Chapter 2: Command and Control 4. Chapter 3: Core Types 5. Chapter 4: Complex Types 6. Part 2: Components
7. Chapter 5: Functions – Reduce, Reuse, and Recycle 8. Chapter 6: Don’t Panic! Handle Your Errors 9. Chapter 7: Interfaces 10. Chapter 8: Generic Algorithm Superpowers 11. Part 3: Modules
12. Chapter 9: Using Go Modules to Define a Project 13. Chapter 10: Packages Keep Projects Manageable 14. Chapter 11: Bug-Busting Debugging Skills 15. Chapter 12: About Time 16. Part 4: Applications
17. Chapter 13: Programming from the Command Line 18. Chapter 14: File and Systems 19. Chapter 15: SQL and Databases 20. Part 5: Building For The Web
21. Chapter 16: Web Servers 22. Chapter 17: Using the Go HTTP Client 23. Part 6: Professional
24. Chapter 18: Concurrent Work 25. Chapter 19: Testing 26. Chapter 20: Using Go Tools 27. Chapter 21: Go in the Cloud 28. Index 29. Other Books You May Enjoy

break and continue

There are going to be times when you need to skip a single loop or stop a loop from running altogether. It’s possible to do this with variables and if statements, but there is an easier way.

The continue keyword stops the execution of the current loop and starts a new loop. The post loop logic runs, and the loop condition statement gets evaluated.

The break keyword also stops the execution of the current loop and stops any new loops from running.

Use continue when you want to skip a single item in a collection; for instance, perhaps it’s okay if one of the items in a collection is invalid, but the rest may be okay to process. Use break when you need to stop processing when there are any errors in the data and there’s no value in processing the rest of the collection.

Here, we have an example that generates a random number between 0 and 8. The loop skips on a number divisible by 3 and stops on a number divisible by 2. It also prints...

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