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XOJO: Variables | Data Types | Create | Use

This video will introduce the concept of variables. It will discuss some of the more common data types and how to use them in your code. It will also discuss some best practices for naming your variables, as well as how to assign values to them. Finally, you will build a small application to implement these concepts. Xojo is a strongly-typed programming language. This means that you must specify the type of every variable you create. Strongly-typed programming languages are safer to use because the compiler can inform you of programming mistakes in variable usage before they make it into your app. Xojo has several built-in data types (called intrinsic types) which fall into these categories: Boolean, String (Text on iOS), Numbers (Integer, Double and others) and Color. In addition, Date is a commonly used class that is often considered a general type. Integers, Doubles and Colors are also called value types because they contain the actual value you assign to them. Strings, Texts, arrays and any class types are called reference types because they actually contain a pointer to the value.