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Command-Line Tools

In this chapter, the following recipes will be covered:

Using command-line flags
Using command-line arguments
Reading and setting environment variables
Configuration using TOML, YAML, and JSON
Working with Unix pipes
Catching and handling signals
An ANSI coloring application

Key benefits

Discover a number of recipes and approaches to develop modern back-end applications

Put to use the best practices to combine the recipes for sophisticated parallel tools

This book is based on Go 1.8, which is the latest version

Description

Go (a.k.a. Golang) is a statically-typed programming language first developed at Google. It is derived from C with additional features such as garbage collection, type safety, dynamic-typing capabilities, additional built-in types, and a large standard library. This book takes off where basic tutorials on the language leave off. You can immediately put into practice some of the more advanced concepts and libraries offered by the language while avoiding some of the common mistakes for new Go developers. The book covers basic type and error handling. It explores applications that interact with users, such as websites, command-line tools, or via the file system. It demonstrates how to handle advanced topics such as parallelism, distributed systems, and performance tuning. Lastly, it finishes with reactive and serverless programming in Go.

What you will learn

Test your application using advanced testing methodologies

Develop an awareness of application structures, interface design, and tooling

Create strategies for third-party packages, dependencies, and vendoring

Get to know tricks on treating data such as collections

Handle errors and cleanly pass them along to calling functions

Wrap dependencies in interfaces for ease of portability and testing

Explore reactive programming design patterns in Go

What do you get with Print?

Instant access to your digital copy whilst your Print order is Shipped

Paperback book shipped to your preferred address

Redeem a companion digital copy on all Print orders

Access this title in our online reader with advanced features

DRM FREE - Read whenever, wherever and however you want

Frequently bought together

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Go: Design Patterns for Real-World Projects

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Total € 148.97

Ben H. May 11, 2018

I thought the book did a great job showcasing a broad number of solutions to very typical use cases for the Go language. There are several examples in the book that are extremely helpful and novel. The book is mostly code, as opposed to narrative, but the narrative included explains what the code samples do and how the work. I would recommend this book to anyone who has gotten started writing Go applications and needs a good base of examples to draw from.

Amazon Verified review

Mike J. Nov 11, 2017

This book provides an excellent corpus of best practices for solving common problems in Go. As a Golang engineer, on topics familiar to me, I found myself affirming the techniques prescribed in this book. It is readily apparent that the author is an expert software engineer and Go developer. On unfamiliar topics, I was able to quickly discern the key points and high level ideas from the author's concise descriptions, consistent layout, and readable code. The book explores a broad set of topics and its layout is ideal for jumping around. The recipe code is well documented and links to additional information are provided for 3rd party libraries and resources. This book can easily serve as the go-to resource for quick introductions and refreshers to the majority of engineering problems that Golang developers encounter. Highly recommended!

V. B. Rao Oct 02, 2018

Example, in "Getting and Setting Environment" variables : The author, instead of sticking with built-in Golang features, chooses to use a third-party library, now the code is full of references to this third-party function call. A poor way to describe the subject at hand, and additionally a poor design choice.

Go Cookbook: Build modular, readable, and testable applications in Go

What do you get with Print?

Go Cookbook

Command-Line Tools

Introduction

Using command-line flags

Getting ready

Using command-line arguments

Getting ready

Reading and setting environment variables

Getting ready

Configuration using TOML, YAML, and JSON

Getting...

Working with Unix pipes

Getting ready

How to do it...

Catching and handling signals

Getting ready

How to do it...

An ANSI coloring application

Getting ready

How to do it...

Page 1 of 9

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Go Cookbook: Build modular, readable, and testable applications in Go

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Key benefits

Description

Who is this book for?

What you will learn

Product Details

What do you get with Print?

Contact Details

Shipping Address

Billing Address

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Frequently bought together

Table of Contents

Recommendations for you

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About the author

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