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Go Programming Cookbook

You're reading from   Go Programming Cookbook Over 85 recipes to build modular, readable, and testable Golang applications across various domains

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Product type Paperback
Published in Jul 2019
Publisher Packt
ISBN-13 9781789800982
Length 434 pages
Edition 2nd Edition
Languages
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Author (1):
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Aaron Torres Aaron Torres
Author Profile Icon Aaron Torres
Aaron Torres
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Toc

Table of Contents (16) Chapters Close

Preface 1. I/O and Filesystems FREE CHAPTER 2. Command-Line Tools 3. Data Conversion and Composition 4. Error Handling in Go 5. Network Programming 6. All about Databases and Storage 7. Web Clients and APIs 8. Microservices for Applications in Go 9. Testing Go Code 10. Parallelism and Concurrency 11. Distributed Systems 12. Reactive Programming and Data Streams 13. Serverless Programming 14. Performance Improvements, Tips, and Tricks 15. Other Books You May Enjoy
Error Handling in Go

Error handling is important for even the most basic Go program. Errors in Go implement the Error interface and must be dealt with at every layer of the code. Go errors do not work like exceptions, and unhandled errors can cause enormous problems. You should strive to handle and consider errors whenever they occur.

This chapter also covers logging since it's common to log whenever an actual error occurs. We'll also investigate wrapping errors, so that the given error should provide an additional context as it's returned up the function stack, so that it's easier to determine the actual cause of certain errors.

In this chapter, the following recipes will be covered:

  • Handling errors and the Error interface
  • Using the pkg/errors package and wrapping errors
  • Using the log package and understanding when to log errors
  • Structured logging...
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