Johnny Boursiquot jboursiquot

GopherCon 2024 - Go For Experienced Programmers pre-workshop preparations

Hello fellow Gophers!

In preparation for the workshop, you'll need to download and install some tools ahead of time so save bandwith and have everything you need to follow along during our time together.

Docker

You'll need Docker Desktop installed: https://www.docker.com/products/docker-desktop/

GopherCon Europe 2024 - Go For Experienced Programmers pre-workshop preparations

Hello fellow Gophers!

In preparation for the workshop, you'll need to download and install some tools ahead of time so save bandwith and have everything you need to follow along during our time together.

Docker

You'll need Docker Desktop installed: https://www.docker.com/products/docker-desktop/

Capstone Project

Summary

The capstone project outlined here will be to create a CLI tool (named ziplook) that, given a postal code, opens a browser that takes the user to Google Maps and drops a pin at the latitude and longitude of said postal code. The project will involve creating a API server for the CLI to interact with. The API will be hosted online using a third party Platform as a Service (PaaS) provider (Zeet) and be reacheable by issuing HTTP GET requests (no authorization required).

I will demonstrate the following:

Building a REST API in Go
Integrating with a remote API (https://api.zippopotam.us)

Generics in 2 Hours

Starting with version 1.18, Go supports the concept of generic programming through the introduction of three major concepts to the language:

Type parameterization of functions and types
Type sets defined by interfaces
Type inference

Let's see how these feature enable us to write less code while still retaining the simplicity we've come to expect of Go.

Practical Go Workshop Prerequisites

Thanks again for signing up for the workshop. There's a lot to cover and we'll need to hit the ground running on time so it's important that you arrive prepared with all you'll need locally already configured and ready to go.

TL;DR

Have Git installed
Have Go 1.13+ installed
Have an editor/IDE with Go plugin installed.
Have some basic familiarity with Go, use gobyexample.com if you need a refresher or introduction.

	// Variable Declaration: Go supports both explicit and implicit variable declaration.
	// Explicit declaration requires specifying the type, while implicit declaration uses type inference.

	// Example of explicit declaration:
	var message string = "Hello, Go!" // explict type specified

	// Example of implicit declaration:
	count := 42

	// Functions: Functions in Go are defined using the func keyword.

	SELECT
	table_schema \|\| '.' \|\| table_name AS table_full_name,
	pg_size_pretty(pg_total_relation_size('"' \|\| table_schema \|\| '"."' \|\| table_name \|\| '"')) AS size
	FROM information_schema.tables
	ORDER BY
	pg_total_relation_size('"' \|\| table_schema \|\| '"."' \|\| table_name \|\| '"') DESC;

	package main

	import (
	"math"
	)

	type Point struct {
	Val float64
	Ts uint32
	}

	[{
	"id": 1,
	"name": "Water - San Pellegrino",
	"description": "curae nulla dapibus dolor vel est donec odio justo sollicitudin ut suscipit a feugiat et eros vestibulum ac est lacinia",
	"price": 80
	}, {
	"id": 2,
	"name": "Cape Capensis - Fillet",
	"description": "rutrum neque aenean auctor gravida sem praesent id massa id nisl venenatis lacinia aenean sit amet justo morbi ut odio",
	"price": 53

	{
	"name": "Johnny Boursiquot",
	"location": "Baltimore, MD"
	}