Book Image

Learning Go Programming

Book Image

Learning Go Programming

Overview of this book

The Go programming language has firmly established itself as a favorite for building complex and scalable system applications. Go offers a direct and practical approach to programming that let programmers write correct and predictable code using concurrency idioms and a full-featured standard library. This is a step-by-step, practical guide full of real world examples to help you get started with Go in no time at all. We start off by understanding the fundamentals of Go, followed by a detailed description of the Go data types, program structures and Maps. After this, you learn how to use Go concurrency idioms to avoid pitfalls and create programs that are exact in expected behavior. Next, you will be familiarized with the tools and libraries that are available in Go for writing and exercising tests, benchmarking, and code coverage. Finally, you will be able to utilize some of the most important features of GO such as, Network Programming and OS integration to build efficient applications. All the concepts are explained in a crisp and concise manner and by the end of this book; you would be able to create highly efficient programs that you can deploy over cloud.
Table of Contents (18 chapters)
Learning Go Programming
About the Author
About the Reviewers

Chapter 5. Functions in Go

One of Go's syntactical tour de force is via its support for higher-order functions as is found in dynamic languages such as Python or Ruby. As we will see in this chapter, a function is also a typed entity with a value that can be assigned to a variable. In this chapter, we are going to explore functions in Go covering the following topics:

  • Go functions

  • Passing parameter values

  • Anonymous functions and closures

  • Higher-order functions

  • Error signaling handling

  • Deferring function calls

  • Function panic and recovery