Book Image

Mastering Go - Third Edition

By : Mihalis Tsoukalos
5 (1)
Book Image

Mastering Go - Third Edition

5 (1)
By: Mihalis Tsoukalos

Overview of this book

Mastering Go is the essential guide to putting Go to work on real production systems. This freshly updated third edition includes topics like creating RESTful servers and clients, understanding Go generics, and developing gRPC servers and clients. Mastering Go was written for programmers who want to explore the capabilities of Go in practice. As you work your way through the chapters, you’ll gain confidence and a deep understanding of advanced Go concepts, including concurrency and the operation of the Go Garbage Collector, using Go with Docker, writing powerful command-line utilities, working with JavaScript Object Notation (JSON) data, and interacting with databases. You’ll also improve your understanding of Go internals to optimize Go code and use data types and data structures in new and unexpected ways. This essential Go programming book will also take you through the nuances and idioms of Go with exercises and resources to fully embed your newly acquired knowledge. With the help of Mastering Go, you’ll become an expert Go programmer by building Go systems and implementing advanced Go techniques in your projects.
Table of Contents (17 chapters)
14
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15
Index

Exercises

  • Use the functionality of byCharacter.go, byLine.go, and byWord.go in order to create a simplified version of the wc(1) UNIX utility.
  • Create a full version of the wc(1) UNIX utility using the viper package for processing command-line options.
  • Create a full version of the wc(1) UNIX utility using commands instead of command-line options with the help of the cobra package.
  • Modify JSONstreams.go to accept user data or data from a file.
  • Modify embedFiles.go in order to save the binary file at a user-selected location.
  • Modify ioFS.go in order to get the desired command as well as the search string as a command-line argument.
  • Make ioFS.go a cobra project.
  • The byLine.go utility uses ReadString('\n') to read the input file. Modify the code to use Scanner (https://golang.org/pkg/bufio/#Scanner) for reading.
  • Similarly, byWord.go uses ReadString('\n') to read the input file—modify the code to use Scanner...