Go, from the beginning
Free!
Minimum price
$0.00
Suggested price

Go, from the beginning

from o to hero

About the Book

This book is meant to be free.

  • Share this book

  • Categories

    • Go
    • Computers and Programming
    • Web Development
    • Software
    • Software Engineering
    • Computer Science
  • Feedback

    Email the Author(s)

About the Author

Chris Noring
Chris Noring

Cloud Developer Lead at Microsoft

Google Developer Expert

Published author

Table of Contents

  • Your first program
    • Introduction
    • A history of Go
    • What is it used for though?
    • References
    • Features
    • Install Go
    • A Go program
    • Commands
    • Summary
    • 🚀 Challenge
    • Review & Self Study
    • Assignment
    • Solution
  • Using variables
    • Introduction
    • Declare variables
    • Assign variables
    • Data types
    • String interpolation
    • Assignment - define some variables and print them out
    • 🚀 Challenge
    • Review & Self Study
    • Solution
  • Flow control
    • Introduction
    • Flow control
    • The if construct
    • Using else if
    • Multiple expressions
    • Assignment - create a program that tests your Boolean logic
    • 🚀 Challenge
    • Solution
    • Review & Self Study
  • Converting between types
    • Introduction
    • Why convert between types
    • Use case - command-line arguments
    • Convert from string to int with strconv
    • Parse string to int
    • Integer to string
    • Additional parsing
    • Assignment
    • Solution
    • 🚀 Challenge
  • Working with loops
    • Introduction
    • The case for looping statements
    • The for loop
    • Repeat until the condition is met with while
    • Using for-each over a range
    • Controlling the loop with continue and break
    • Assignment - create a command line loop
    • 🚀 Challenge
    • Solution
  • Reading user input
    • Introduction
    • User input
    • Managing user input with fmt
    • Reading one input
    • Reading multiple inputs
    • Scanf(), scan the input with formatters
    • Learn more
    • Assignment - read user input
    • 🚀 Challenge
    • Solution
  • Using functions
    • Introduction
    • Why functions
    • Your first function main()
    • The anatomy of a function
    • Adding a return type
    • Multiple returns
    • Assignment - adding a function to a program
    • Solution
  • Handling errors
    • Introduction
    • Errors
    • Crash the program with panic()
    • Improve the error handling
    • Use the error pattern with the errors package
    • Assignment I - add error handling
    • Solution I
    • Assignment II - improve error logging
    • Solution II
  • Arrays and slices
    • Introduction
    • Arrays
    • Declare an array
    • Accessing elements
    • Length and capacity
    • Slices
    • Assignment - store log entries
    • Solution
  • Structs
    • Introduction
    • Why structs
    • Defining a struct
    • Embedding a struct
    • Adding implementation to structs
    • Assignment - defining a struct
    • Solution
  • Using maps
    • Introduction
    • The use case for a map
    • Creating a map
    • Read a value by key
    • Iterate over a map
    • Delete an entry
    • Assignment - build a phone book
    • Solution
    • Challenge
  • Interfaces
    • Introduction
    • Interface
    • Interface - describing a behaviour
    • Implement an interface
    • Type assertions
    • Change a value
    • Assignment
    • Solution
  • Your first project
    • Introduction
    • Module use cases
    • Consume internal files
    • Creating a project
    • The import statement
    • Assignment - create a project
    • Solution
    • Challenge
  • Consume an external module
    • Introduction
    • External module
    • Import module
    • Use it in code
    • Assignment - consume an external module
    • Solution
    • Challenge
  • Create a module meant for sharing
    • Introduction
    • Create a module
    • Assignment - create a module meant for sharing and consume it
    • Challenge
  • Test your code in Go
    • Introduction
    • Why we test
    • What Go provides
    • Your first test
    • Control the test run
    • Coverage
    • Learn more
    • Challenge
  • Working with JSON
    • Introduction
    • JSON
    • Reading JSON
    • Writing JSON
    • Assignment
    • Solution
    • 🚀 Challenge
    • Learn more
  • Build a Web API
    • Introduction
    • Web API
    • The net/http library
    • Responding to a request
    • Working with the request
    • ServeMux, a better way
    • Assignment - build a first web app
    • Solution
    • Challenge
  • Better logging with a logging library
    • Introduction
    • Reasons to log
    • What to log
    • Using log
    • Assignment
    • Solution
  • Working with strings
    • Handling special characters
    • Inspect with Contains()
    • Parsing with Split()
    • Presentation
    • Assignment
    • Solution
  • Use regular expressions to parse text
    • What is RegEx and what to use it for
    • Why use RegEx
    • Where is it used ?
    • Your first RegEx
    • Character classes
    • Repetition
    • Anchors and boundaries
    • Groups
    • Named groups
    • Assignment - create a Go program that parses a URL
    • Replacing
    • Assignment - replace content
    • Solution II
  • Goroutines and channels
    • Introduction
    • Concurrency, what’s the benefit
    • Goroutines
    • Channels
    • Assignment - SearchFiles() with channels
    • Challenge
    • Solution
  • Working with a database
    • Introduction
    • Select a sqlite driver
    • Use sqlite3 from the console
    • Talking to your database via Go.
    • Assignment
    • Solution
  • Read and write to files
    • Introduction
    • Read a text file
    • Write text to a file
    • Append to a file
    • Assignment
    • Solution
    • Challenge
  • Perform operations on files and directories
    • Introduction
    • File information
    • Copy file
    • Rename
    • Remove file
    • Create dir
    • Read dir
    • Assignment
    • Solution

The Leanpub 60-day 100% Happiness Guarantee

Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.

See full terms

Do Well. Do Good.

Authors have earned$11,707,309writing, publishing and selling on Leanpub, earning 80% royalties while saving up to 25 million pounds of CO2 and up to 46,000 trees.

Learn more about writing on Leanpub

Free Updates. DRM Free.

If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).

Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.

Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.

Learn more about Leanpub's ebook formats and where to read them

Write and Publish on Leanpub

You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!

Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.

Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF, EPUB and/or MOBI files and then publish with one click!) It really is that easy.

Learn more about writing on Leanpub