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The Go Workshop
The Go Workshop

The Go Workshop: Learn to write clean, efficient code and build high-performance applications with Go

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Profile Icon Delio D'Anna Profile Icon Andrew Hayes Profile Icon Sam Hennessy Profile Icon Jeremy Leasor Profile Icon Gobin Sougrakpam Profile Icon Dániel Szabó +2 more Show less
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S$59.99
Full star icon Full star icon Full star icon Full star icon Half star icon 4.8 (10 Ratings)
Paperback Dec 2019 824 pages 1st Edition
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S$42.99 S$47.99
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S$59.99
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Free Trial
Arrow left icon
Profile Icon Delio D'Anna Profile Icon Andrew Hayes Profile Icon Sam Hennessy Profile Icon Jeremy Leasor Profile Icon Gobin Sougrakpam Profile Icon Dániel Szabó +2 more Show less
Arrow right icon
S$59.99
Full star icon Full star icon Full star icon Full star icon Half star icon 4.8 (10 Ratings)
Paperback Dec 2019 824 pages 1st Edition
eBook
S$42.99 S$47.99
Paperback
S$59.99
Subscription
Free Trial
eBook
S$42.99 S$47.99
Paperback
S$59.99
Subscription
Free Trial

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The Go Workshop

2. Logic and Loops

Overview

In this chapter, we'll use branching logic and loops to demonstrate how logic can be controlled and selectively run. With these tools, you'll have control of what you do and don't want to run based on the values of variables.

By the end of this chapter, you will be able to implement branching logic using if, else, and else if; use switch statements to simplify complex branching logic; create looping logic using a for loop; loop over complex data collections using range; and use continue and break to take control of the flow of loops.

Introduction

In the previous chapter, we looked at variables and values and how we can temporarily store data in a variable and make changes to that data. We're now going to look at how we can use that data to run logic, or not, selectively. This logic allows you to control how data flows through your software. You can react to and perform different operations based on the values in your variables.

The logic could be for validating your user's inputs. If we were writing code to manage a bank account, and the user asked to withdraw some money, we could check that they asked for a valid amount of money. We would check that they had enough money in their account. If the validation was successful, we would use logic to update their balance, transfer the money, and show a success message. If the validation failed, we'd show a message explaining what went wrong.

If your software is a virtual world, then logic is the physical law of that world. Like the physical laws...

Summary

In this chapter, we discussed logic and loops. These are the foundational building blocks to build complex software. They allow you to have data flow through your code. They let you deal with collections of data by letting you execute the same logic on every element of the data.

Being able to define the rules and laws of your code are the starting points of codifying the real world in software. If you are creating banking software and the bank has rules about what you can and can't do with money, then you can also define those rules in your code.

Logic and loops are the essential tools that you'll use to build all your software.

In the next chapter, we'll look at Go's type system and the core types it has available.

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Key benefits

  • Build a comprehensive foundation in Go and focus on developing real-world applications
  • Explore the Go Standard Library and learn how to structure your code
  • Learn how to efficiently interact with files, databases and REST APIs

Description

The Go Workshop will take the pain out of learning the Go programming language (also known as Golang). It is designed to teach you to be productive in building real-world software. Presented in an engaging, hands-on way, this book focuses on the features of Go that are used by professionals in their everyday work. Each concept is broken down, clearly explained, and followed up with activities to test your knowledge and build your practical skills. Your first steps will involve mastering Go syntax, working with variables and operators, and using core and complex types to hold data. Moving ahead, you will build your understanding of programming logic and implement Go algorithms to construct useful functions. As you progress, you'll discover how to handle errors, debug code to troubleshoot your applications, and implement polymorphism using interfaces. The later chapters will then teach you how to manage files, connect to a database, work with HTTP servers and REST APIs, and make use of concurrent programming. Throughout this Workshop, you'll work on a series of mini projects, including a shopping cart, a loan calculator, a working hours tracker, a web page counter, a code checker, and a user authentication system. By the end of this book, you'll have the knowledge and confidence to tackle your own ambitious projects with Go.

Who is this book for?

The Go Workshop is designed for anyone who is new to Go. Whether you're beginning your journey as an aspiring developer, or are experienced with another programming language and want to branch out to something new, this book will get you on the right track. No prior programming experience is necessary.

What you will learn

  • Understand Go syntax and use it to handle data and write functions
  • Debug your Go code to troubleshoot development problems
  • Safely handle errors and recover from panics
  • Implement polymorphism by using interfaces
  • Work with files and connect to external databases
  • Create a HTTP client and server and work with a RESTful web API
  • Use concurrency to design software that can multitask
  • Use Go Tools to simplify development and improve your code
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Dec 30, 2019
Length: 824 pages
Edition : 1st
Language : English
ISBN-13 : 9781838647940
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Product Details

Publication date : Dec 30, 2019
Length: 824 pages
Edition : 1st
Language : English
ISBN-13 : 9781838647940
Vendor :
Google
Category :
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The Go Workshop
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Mastering Go
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The Python Workshop
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Table of Contents

19 Chapters
1. Variables and Operators Chevron down icon Chevron up icon
2. Logic and Loops Chevron down icon Chevron up icon
3. Core Types Chevron down icon Chevron up icon
4. Complex Types Chevron down icon Chevron up icon
5. Functions Chevron down icon Chevron up icon
6. Errors Chevron down icon Chevron up icon
7. Interfaces Chevron down icon Chevron up icon
8. Packages Chevron down icon Chevron up icon
9. Basic Debugging Chevron down icon Chevron up icon
10. About Time Chevron down icon Chevron up icon
11. Encoding and Decoding (JSON) Chevron down icon Chevron up icon
12. Files and Systems Chevron down icon Chevron up icon
13. SQL and Databases Chevron down icon Chevron up icon
14. Using the Go HTTP Client Chevron down icon Chevron up icon
15. HTTP Servers Chevron down icon Chevron up icon
16. Concurrent Work Chevron down icon Chevron up icon
17. Using Go Tools Chevron down icon Chevron up icon
18. Security Chevron down icon Chevron up icon
19. Special Features Chevron down icon Chevron up icon

Customer reviews

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Rating distribution
Full star icon Full star icon Full star icon Full star icon Half star icon 4.8
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agus Jun 22, 2024
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Great Book
Subscriber review Packt
Jonathan Reeves Oct 12, 2021
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book walks you through the basics of Go all the way up to some of the advanced concepts. You will learn the Go programming language and have projects that you have built by the end of this book. The projects are fun the writing style is very easy to understand and helps to solidify the concepts taught.If you are looking for a way to learn Go and learn it well I highly recommend this book.
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jml Apr 30, 2021
Full star icon Full star icon Full star icon Full star icon Full star icon 5
The Go Workshop packs a comprehensive language course into its 680 pages (not counting the appendix). Starting from scratch, the reader is taken step-by-step through all of the important topics related to Go development. Structural topics like memory management, pointers, and concurrency/deferral are covered and the entire book is example-based, so those who like to use existing code as starting points for their own projects have a lot from which to choose. Extensive discussion of relevant material like JSON and CSV import/export, web server and client development, and timestamp handling rounds out the book.A few things could be improved. Infrequent but widely-distributed typos may leave you scratching your head over what the example code is trying to tell you. There’s a lot of “We’ll cover this topic later, but we’re using it now” type of thing, which may be unavoidable in an example-based work. Finally, there are links to each of the examples (the solutions to which are in the appendix) but there are no links from the examples back to the referring material, so one needs to record one’s location before checking out the answers.Overall, the Go Workshop offers a solid introduction to the Go language, and it really shines when used as an adjunct to a more traditional textbook; the combination far surpasses what either alone can provide.
Amazon Verified review Amazon
Krish Bhanushali Dec 17, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Well written book with great examples. Must buy
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shakil akram Apr 21, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I cant appreciate enough about the effort the authors has put in, The book does what is exactly says. It takes you from a very rudimentary level to a very advanced level. I personally never understood interfaces, lets not talk about empty interfaces{}. not only this book helped me understand it, Now i can even teach others confidently.What this book does best that very few book does, it never guess reader's understanding of Go and try to explain things as if reader knows nothing.The exercise challenges are neither too difficult, nor too easy. But each exercise is a build up from previous. So it cements your understanding.The Database, time, interfaces, http chapters were the best i've ever come across. It does not only starts with very basic but also teaches you advanced stuff, you can use in real life. it even teaches you how to write your application to protect from SQL injection. this book deserve a 5 out of 5 just for these chapters alone.I actually got this from packt portal, i wanted to write a review there, I did not see any option there, so i wrote it here.
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