go-101-basics

Introduction to Go, the tooling and basic language features

Authors

Rob Reid @codingconcepts

Nick Lanng @nicklanng

Topics

Install Go
What is the Go workspace and why is it different to project workspaces
Data types
Slices and arrays
Pointers vs values
Functions
FizzBuzz Exercise
String Calculator Exercise

## 1. Install Go

Windows

Linux

Mac OS X

The easiest way to install go is to use Homebrew.

brew install go

Create a folder for your Go workspace, I like to make a folder at ~/work/go.

Open your ~/.bashrc or ~/.zshrc (or whatever the config file is for your shell of choice). You need to set up your environmental variables used for Go tooling and binaries pulled down with go get.

Add the following lines to your shell config, be sure to set the right path if different:

export GOPATH=$HOME/work/go
export PATH=$PATH:$GOPATH/bin

## 7. FizzBuzz Exercise

In this classic coding kata, you are tasked with printing the numbers from 1 to 100.

However, there are some extra rules.

If the number is a multiple of 3 then, instead of the number, print 'Fizz'.

If the number is a multiple of 5 then, instead of the number, print 'Buzz'.

If the number is a multiple of BOTH then instead of the number, print 'FizzBuzz'.

Click here to see the solution!

```go package main

import "fmt"

func main() { for i := 1; i <= 100; i++ { if i%15 == 0 { fmt.Println("FizzBuzz") } else if i%3 == 0 { fmt.Println("Fizz") } else if i%5 == 0 { fmt.Println("Buzz") } else { fmt.Println(i) } } }