Your first Swift Application — without a Mac OR Xcode
Using Xcode requires a Mac, but you can code in Swift without either!
Many tutorials seem to indicate that you need a Mac with the Xcode IDE to start coding an using Swift. This is not entirely true. Scrub that, it’s not true at all.
This tutorial uses Swift (any version is fine) and covers using an online IDE which at the time of writing (December 2019) defaults to Swift 5.1. You may of course use your installed version of Xcode.
Terminology
Character: A written character, usually associated with a letter of the alphabet
Console: A simple window for programming that can display output and (usually) process input
“Hello, World!”: A program or script that outputs “Hello World” to the console or has some other way of displaying the appropriate message
Integrated Development Environment (IDE): An application that provides a set of features that are used by software developers to create computer software
Online IDE: An IDE which can run your code through the Internet (often leveraging a browser)
Swift: An open source programming language for macOS, iOS, watchOS and tvOS