A Comprehensive Golang Tutorial

What Is GO?

“Go Language will be the server language of the future.” — Tobias Lütke, Shopify

It is a Free and Open Source programming language created at Google Inc. in 2007 by Ken Thompson (B, C, UNIX, UTF-8), Rob Pike(UNIX, UTF-8) and Robert Griesmer (HotSpot, JVM)

Go is created by leading tech giant Google. It is designed by Google to solve their problems of supporting scalability and effectiveness. Those are the issues you will face while creating your own servers.

Go (Go language) is Procedural, Imperative, Modular, Object-Oriented, Statically typed, Garbage Collected, Compiled programming language with syntax similar to a family of C languages (C, C++, C#, Java, JavaScript) & CSP style concurrency features. Programs are created using packages, for efficient management of dependencies. Go programming implementation use a traditional compile and link model to generate executable binaries. The Golang announced in 2009 and used in some of Google’s production system.

Go Program can be in length from 3 lines to millions of lines and it should be written into one or more files with the extension “.go”. For example, hello.go.

You can use “vi”,” vim” or any other text editor to write your go program into a file

Go Is Fast:

  • to learn
  • to develop
  • to compile
  • to deploy
  • to run

Bonus Advantages:

  • Golang has the speed of compiled language, but the feel of an interpreted language
  • Golang can make connections with thousands of users with the single instance only.

Valuable Resources Of Golang (By Todd McLeod):

Books On Golang:

Features Of Golang

1. Multicore Processing:

Most of the programming languages like Python, Java supports multithreading but the problem is with concurrent execution, thread- locking, race conditions and deadlocks. This makes it hard to create a multithreading application.

For example, when we are creating a new thread in java it will consume approx 1MB heap and for multiple thread creations, it will put tremendous pressure on heap and so will cause jvm not responding or shutdown.

So, Golang has developed by keeping this concurrency feature in mind. Go has goroutines instead of threads which consumes 2KB of memory from heap.

goroutines have faster startup than thread

Are You Looking For Golang Development Services?

2. MicroServices Support

Today all applications have no. of external services like databases, queues, caches. Go uses async I/O so that application can work with any no of services without blocking web request.

Other Features Include

  • Super performance
  • Clean Syntax
  • Garbage Collected
  • Concurrency
  • Powerful Standard Library
  • Open Source
  • Portable
  • Safe
  • It compiles fastly without makefiles, integrates with Git for distributed package management, and formats code with gofmt.

Go based system now runs on 400 servers,200+ million real-time connections & 10 billion messages daily.

Many big companies are using Golang for their projects

  • Google
  • DropBox
  • SoundCloud
  • Docker
  • Cloudflare
  • BBC

Installing Go:

To install Go, we need to go through the below steps.

Introduction:

For Windows, we need to use commands from Git Shell i.e. Terminal Emulator for distributed package management (optional). So we need Terminal Emulator for that.

3. Terminal Emulator-Git:

Download and install git for Windows to download go packages. We can also use the command prompt for the same. Now open it and test it using some basic terminal commands.

Installation Insights:

  1. Download Golang: You can download the Go lang binary release here. Download Golang distribution based on 32bit and 64bit OS
  2. Go workspace: Certain folder structure for Go development. Create a Project Folder having name where your project will reside

For example,

E:\golangdemo  (Name of my Workspace)
    bin folder  (binary exe file of project)
        pkg folder (.a Archive file à precompiled pkg file)
            src folder   (Source code files)
                github.com folder(downloaded dependencies)
                      golang.org folder (downloaded dependencies)

Search for go packages here

To download Go packages use following syntax –

→ go get <github_url>

for ex. > go get github.com/gorilla/mux (fully qualified pkg name)

To know more about go commands type > go in cmd prompt

Environment Path Variables-Windows

After creation of Go workspace set the Path variable of Go installation by following these steps –

Right Click on MyComputer/ThisPC→ Properties→ AdvancedSystem Settings → EnvironmentVariables→ New→

Here you need to set GOPATH and GOROOT for both User variables and System variable.

GOPATH→ Your workspace path

GOROOT→ Installed Path of GO

To check environment path variables use below command in cmd prompt –

→ env path variable stores the path to some location of computer

Development Environment

The most popular IDE’s (Integrated Development Environment) used for Golang development are Eclipse , WebStorm ,atom.

We are going to use Eclipse IDE here

  • Eclipse
  • GoClipse plugin
  • Creating new Go Project || Package || Library

How To Download And Install Goclipse Plugin To Your Eclipse –

In the Eclipse , right click on Help Menu→ Eclipse Marketplace→ search for ‘Goclipse’ and install it.

After the installation,

Go to File Menu→ Go Project→ Enter Project Name and choose default location as your workspace location

Your project structure will be like this –

Go to windows menu of eclipse→ select Preferences→ choose Go→ Tools→ Click on Download and it will download the dependencies like gocode, guru, godef, gofmt and click apply

Here, you just need to click on Download button for each of these paths.

While downloading check the console

Now, your Go installation and configuration is done.

Make sure you do not miss a single step.

For more information on Golang refer below links –

https://golang.org/doc/code.html

https://golang.org/doc/effective_go.html

As you are now all set with Golang, check out our next chapter on ‘Creating Your First Go Project

Content Team

This blog is from Mindbowser‘s content team – a group of individuals coming together to create pieces that you may like. If you have feedback, please drop us a message on contact@mindbowser.com

Get in touch for a detailed discussion.

Hear From Our 100+ Customers
coma

Mindbowser helped us build an awesome iOS app to bring balance to people’s lives.

author
ADDIE WOOTTEN
CEO, SMILINGMIND
coma

We had very close go live timeline and MindBowser team got us live a month before.

author
Shaz Khan
CEO, BuyNow WorldWide
coma

They were a very responsive team! Extremely easy to communicate and work with!

author
Kristen M.
Founder & CEO, TotTech
coma

We’ve had very little-to-no hiccups at all—it’s been a really pleasurable experience.

author
Chacko Thomas
Co-Founder, TEAM8s
coma

Mindbowser is one of the reasons that our app is successful. These guys have been a great team.

author
Dave Dubier
Founder & CEO, MangoMirror
coma

Mindbowser was very helpful with explaining the development process and started quickly on the project.

author
Hieu Le
Executive Director of Product Development, Innovation Lab
coma

The greatest benefit we got from Mindbowser is the expertise. Their team has developed apps in all different industries with all types of social proofs.

author
Alex Gobel
Co-Founder, Vesica
coma

Mindbowser is professional, efficient and thorough. 

author
MacKenzie R
Consultant at XPRIZE
coma

Very committed, they create beautiful apps and are very benevolent. They have brilliant Ideas.

author
Laurie Mastrogiani
Founder, S.T.A.R.S of Wellness
coma

MindBowser was great; they listened to us a lot and helped us hone in on the actual idea of the app.” “They had put together fantastic wireframes for us.

author
Bennet Gillogly
Co-Founder, Flat Earth
coma

They're very tech-savvy, yet humble.

author
Uma Nidmarty
CEO, GS Advisorate, Inc.
coma

Ayush was responsive and paired me with the best team member possible, to complete my complex vision and project. Could not be happier.

author
Katie Taylor
Founder, Child Life On Call
coma

As a founder of a budding start-up, it has been a great experience working with Mindbower Inc under Ayush's leadership for our online digital platform design and development activity.

author
Radhika Kotwal
Founder of Courtyardly
coma

The team from Mindbowser stayed on task, asked the right questions, and completed the required tasks in a timely fashion! Strong work team!

author
Michael Wright
Chief Executive Officer, SDOH2Health LLC
coma

They are focused, patient and; they are innovative. Please give them a shot if you are looking for someone to partner with, you can go along with Mindbowser.

author
David Cain
CEO, thirty2give
coma

We are a small non-profit on a budget and they were able to deliver their work at our prescribed budgets. Their team always met their objectives and I'm very happy with the end result. Thank you, Mindbowser team!!

author
Bart Mendel
Founder, Mindworks
coma

Mindbowser was easy to work with and hit the ground running, immediately feeling like part of our team.

author
George Hodulik
CEO, Stealth Startup, Ex-Google