Learn how to define functions and handle values that might be absent using optionals in Swift.

Explore some special types of properties and how access control works in Swift.

Write powerful functions, structs, classes, and enums that work with many different types by learning how to use protocols and generics.

Continue your Swift journey by learning how to represent real-world objects using structs and classes!

Build better and more maintainable web applications through test-driven development.

Build better and more maintainable web applications through test-driven development.

Learn how to create the model layer of a web application using Mongoose and TDD.

Use test-driven development to create a JavaScript server using the Express framework.

Get started developing Android Apps! Get to know the Android programming environment and skills needed to build basic Android apps

Create your own 'Buy and Sell' website

Get a taste of regular expressions (regex), a powerful search pattern language to quickly find the text you're looking for.

Learn about the command line, starting with navigating and manipulating the file system, and ending with redirection and configuring the environment.