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Introduction to the Course

Go Language Basics

Introduction Utilizing Go Packages Using Go's Variable Types Variable Scopes and Shadowing Looping in Go Using Conditionals Learning About Functions Challenge: Armstrong Numbers Solution Review: Armstrong Numbers Public and Private Declarations Using Arrays and Slices Understanding Maps Challenge: Find Repeating Words in a Sentence Solution Review: Find Repeating Words in a Sentence Understanding Go Pointers Getting To Know About Structs Comprehending Go Interfaces Challenge: Implement the Stringer Interface Solution Review: Implement Stringer Interface Summary and Quiz on the Go Language Basics

Go Language Essentials

Introduction Handling Errors in Go Utilizing Go Constants Using Defer, Panic, and Recover Utilizing Goroutines for Concurrency Select and Mutexes in Goroutines Challenge: Sum With Goroutines Solution Review: Sum With Goroutines Understanding Go’s Context Type Utilizing Go's Testing Framework Generics – The New Kid on the Block Adding Type Parameters to Struct Types Summary and Quiz on the Go Language Basics

Filesystem Interactions

Introduction I/O Interfaces in Go Reading and Writing to Files Streaming File Content OS-Agnostic Pathing OS-Agnostic Filesystems Summary and Quiz on Filesystem Interactions

Using Common Data Formats

Introduction CSV Files Using excelize When Dealing With Excel Popular Encoding Formats: JSON Challenge: Process JSON Data Solution Review: Process JSON Data Popular Encoding Formats - YAML Summary and Quiz on Using Common Data Formats

Interacting with Remote Data Sources

Introduction Accessing SQL Databases Developing REST Services and Clients Developing gRPC Services and Clients Summary and Quiz on Interacting With Remote Data Sources

Writing Command-Line Tooling

Implementing Application I/O

Accessing Non-Flag Arguments

Using Cobra for Advanced CLI Applications

Handling OS Signals

Summary and Quiz on Writing Command-Line Tooling

Automating Command-Line Tasks

Introduction Using os/exec to Automate Local Changes Using SSH in Go to Automate Remote Changes Designing Safe, Concurrent Change Automations Writing a System Agent Summary and Quiz on Automating Command-Line Tasks

Observability with OpenTelemetry

Introduction An Overview of OpenTelemetry Logging With Context Instrumenting For Distributed Tracing Instrumenting For Metrics Alerting on Metrics Abnormalities Summary and Quiz on Observability With OpenTelemetry

Automating Workflows with GitHub Actions

Introduction Understanding the Basics of GitHub Actions Build and Trigger Our First GitHub Action Building a Continuous Integration Workflow Building a Release Workflow Creating a Custom GitHub Action Using Go Publishing a Custom Go GitHub Action Summary and Quiz on Automating Workflows With GitHub Actions

Using ChatOps to Increase Efficiency

Introduction Environment Architecture Using an Ops Service Creating Event Handlers Creating Our Slack Application Summary

Creating Immutable Infrastructure Using Packer

Introduction Initializing Packer Building an Amazon Machine Image Validating Images With Goss Customizing Packer With Plugins Releasing, Using and Debugging a Plugin Summary and Quiz on Creating Infrastructure Using Packer

Infrastructure as Code with Terraform

Introduction An Introduction to IaC Understanding the Basics of Terraform Providers Building a Pet Store Terraform Provider Summary and Quiz on Infrastructure as Code with Terraform

Deploying and Building Applications in Kubernetes

Introduction Interacting With the Kubernetes API Deploying a Load-Balanced HTTP Application Using Go Extending Kubernetes With Custom Resources and Operators Building a Pet Store Operator Summary and Quiz on Applications in Kubernetes

Programming the Cloud

Introduction What Is the Cloud?Learning the Basics of the Azure APIs Building Infrastructure Using Azure Resource Manager Using Provisioned Azure Infrastructure Summary and Quiz on Programming the Cloud

Designing for Chaos

Introduction Using Overload Prevention Mechanisms Using Rate Limiters To Prevent Runaway Workflows Building Workflows That Are Repeatable and Never Lost Using Policies to Restrict Tools Building Systems With an Emergency Stop Summary and Quiz on Designing for Chaos

Appendix

Installing Go on Local Machine Building Code Locally

Conclusion

Accessing Non-Flag Arguments

Learn about arguments and how to access non-flag arguments in Go.

We'll cover the following

Retrieving input from STDIN

Arguments in Go are read in a few ways. We can read the raw arguments using os.Args, which will also include all the flags. This is great when no flags are used.

When using flags, flag.Args() can be used to retrieve only the non-flag arguments. If we want to send a list of authors to a development server and retrieve QOTDs for each author, the command might look like this:

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