Getting started with Go development on macOS

INSTRUCTIONS.md

Install Go

Install homebrew: https://brew.sh/

Install Go:

brew install go

Edit your ~/.bashrc

vi ~/.bashrc

Add environment vars:

export GOPATH="${HOME}/go"
export GOROOT="$(brew --prefix golang)/libexec"
export PATH="$PATH:${GOPATH}/bin:${GOROOT}/bin"

Reload your shell settings:

source ~/.bashrc

Create paths:

test -d "${GOPATH}" || mkdir "${GOPATH}"
test -d "${GOPATH}/bin" || mkdir "${GOPATH}/bin"
test -d "${GOPATH}/src/github.com" || mkdir -p "${GOPATH}/src/github.com"

Creating a starter project

Create the src directory:

mkdir -p "${GOPATH}/src/github.com/yourusername/projectname"
cd "${GOPATH}/src/github.com/yourusername/projectname"

Create a hello world file:

vi hello.go

Add the following:

package main

import "fmt"

func main() {
	fmt.Printf("hello, world\n")
}

Build and execute:

go build
./hello

Debugging with VS Code

1. Install the Go extension by Microsoft: https://marketplace.visualstudio.com/items?itemName=ms-vscode.Go
2. Click on the Debug icon in the sidebar.
3. Click on the cog icon in the Debug panel. Use the default values for the generated launch.json.
4. Add a breakpoint in your hello.go file
5. Click on the play icon to start debugging, and your breakpoint should be hit.