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Mastering Go
Mastering Go

Mastering Go: Leverage Go's expertise for advanced utilities, empowering you to develop professional software , Fourth Edition

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Mastering Go

Basic Go Data Types

Data is stored and manipulated in variables—all Go variables should have a data type that is either determined implicitly or declared explicitly. Knowing the built-in data types of Go allows you to understand how to manipulate simple data values and construct more complex data structures when simple data types are not enough or not efficient for a job. Go being a statically typed and compiled programming language allows the compiler to perform various optimizations and checks prior to program execution.

The first part of this chapter is all about the basic data types of Go, and the second part logically follows, covering the data structures that allow you to group data of the same data type, which are arrays and the much more powerful slices.

But let us begin with something more practical: imagine that you want to read data as command line arguments. How can you be sure that what you have read was what you expected? How can you handle error situations...

The error data type

Go provides a special data type, named error, for representing error conditions and error messages—in practice, this means that Go treats errors as values. To program successfully in Go, you should be aware of the error conditions that might occur with the functions and methods you are using and handle them accordingly.

As you already know from the previous chapter, Go follows a particular convention concerning error values: if the value of an error variable is nil, then there is no error. As an example, let us consider strconv.Atoi(), which is used for converting a string value into an int value (Atoi stands for ASCII to Int). As specified by its signature, strconv.Atoi() returns (int, error). Having an error value of nil means that the conversion was successful and that you can use the int value if you want. Having an error value that is not nil means that the conversion was unsuccessful and that the string input is not a valid int value.

...
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Key benefits

  • Fully updated with coverage of web services, TCP/IP, REST APIs, Go Generics, and Fuzzy Testing
  • Apply your new knowledge to real-world exercises, building high-performance servers and robust command-line utilities, to deepen your learning
  • Gain clarity on what makes Go different, understand its nuances and features for smoother Go development

Description

Mastering Go, now in its fourth edition, remains the go-to resource for real-world Go development. This comprehensive guide delves into advanced Go concepts, including RESTful servers, and Go memory management. This edition brings new chapters on Go Generics and fuzzy Testing, and an enriched exploration of efficiency and performance. As you work your way through the chapters, you will gain confidence and a deep understanding of advanced Go topics, including concurrency and the operation of the Garbage Collector, using Go with Docker, writing powerful command-line utilities, working with JavaScript Object Notation (JSON) data, and interacting with databases. You will be engaged in real-world exercises, build network servers, and develop robust command-line utilities. With in-depth chapters on RESTful services, the WebSocket protocol, and Go internals, you are going to master Go's nuances, optimization, and observability. You will also elevate your skills in efficiency, performance, and advanced testing. With the help of Mastering Go, you will become an expert Go programmer by building Go systems and implementing advanced Go techniques in your projects.

Who is this book for?

Mastering Go is written primarily for Go programmers who have some experience with the language and want to become expert practitioners. You will need to know the basics of computer programming before you get started with this book, but beyond that, anyone can sink their teeth into it.

What you will learn

  • Learn Go data types, error handling, constants, pointers, and array and slice manipulations through practical exercises
  • Create generic functions, define data types, explore constraints, and grasp interfaces and reflections
  • Grasp advanced concepts like packages, modules, functions, and database interaction
  • Create concurrent RESTful servers, and build TCP/IP clients and servers
  • Learn testing, profiling, and efficient coding for high-performance applications
  • Develop an SQLite package, explore Docker integration, and embrace workspaces
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Mar 29, 2024
Length: 736 pages
Edition : 4th
Language : English
ISBN-13 : 9781805127147
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Length: 736 pages
Edition : 4th
Language : English
ISBN-13 : 9781805127147
Vendor :
Google
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Table of Contents

17 Chapters
A Quick Introduction to Go Chevron down icon Chevron up icon
Basic Go Data Types Chevron down icon Chevron up icon
Composite Data Types Chevron down icon Chevron up icon
Go Generics Chevron down icon Chevron up icon
Reflection and Interfaces Chevron down icon Chevron up icon
Go Packages and Functions Chevron down icon Chevron up icon
Telling a UNIX System What to Do Chevron down icon Chevron up icon
Go Concurrency Chevron down icon Chevron up icon
Building Web Services Chevron down icon Chevron up icon
Working with TCP/IP and WebSocket Chevron down icon Chevron up icon
Working with REST APIs Chevron down icon Chevron up icon
Code Testing and Profiling Chevron down icon Chevron up icon
Fuzz Testing and Observability Chevron down icon Chevron up icon
Efficiency and Performance Chevron down icon Chevron up icon
Changes in Recent Go Versions Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Top Reviews
Rating distribution
Full star icon Full star icon Full star icon Full star icon Half star icon 4.8
(27 Ratings)
5 star 81.5%
4 star 18.5%
3 star 0%
2 star 0%
1 star 0%
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Nilanjan Jun 02, 2024
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Learnt a lot, hopefully will help in our current project
Subscriber review Packt
Allen Wyma Apr 08, 2024
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I recently had to use Golang and I was looking to refresh my mind since it's been a few years. I was able to read through this book and it helped me to get a good refreshment of the language and ecosystem since things have changed quite a bit in Golang since I learned it a long time ago.
Amazon Verified review Amazon
Jonathan Reeves Jul 28, 2024
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Mastering Go is a one stop shop for being able to learn Go from beginner concepts to advanced and everything in between. If you are looking for an easy to follow and really well written book that will cover all that you need to understand and write Go then look no further. This book is a great resource for Go developers. Whether you are an experienced Go developer or a beginner this book has something in it for you.
Amazon Verified review Amazon
Windsänger
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I recently had the pleasure of diving into "Mastering Go: Fourth Edition" and it has truly been a game-changer for me. First and foremost, a huge thank you to Vipanshu Parashar for providing me with the reviewing copy!This edition of "Mastering Go" delves into advanced topics like 'Fuzz Testing and Observability' and 'Go Generics', which are crucial for anyone looking to take their Go programming skills to the next level. The authors have done an exceptional job of breaking down complex concepts into digestible chunks, making it accessible for both intermediate and experienced developers.What I particularly appreciated about this book is its practical approach. It not only explains theoretical concepts but also provides real-world examples and hands-on exercises, allowing readers to apply what they've learned in a meaningful way.Whether you're looking to enhance your understanding of Go's concurrency model, optimize performance, or explore the latest features like generics, "Mastering Go: Fourth Edition" has got you covered.Overall, I highly recommend this book to anyone serious about mastering Go programming. It's an invaluable resource that will undoubtedly help you become a more proficient Go developer. Five stars without hesitation!
Amazon Verified review Amazon
Gaurav Apr 09, 2024
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Mastering Go, Fourth Edition, is an indispensable resource for any Go programmer looking to deepen their understanding and master advanced topics. This edition covers an array of cutting-edge subjects, including Go Generics and Fuzzy Testing, ensuring it stays relevant in the ever-evolving landscape of Go programming.What sets this edition apart is its comprehensive coverage of crucial topics like concurrency, web services, and testing techniques. From RESTful servers to TCP/IP clients and servers, the book leaves no stone unturned in exploring the nuances of Go development. Additionally, the discussions on efficiency, performance, and observability equip readers with essential skills for optimizing their applications.
Amazon Verified review Amazon
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