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In the previous chapter, you looked at conditionals, which allow you to do different things based on different conditions, and optionals, which enable you to create variables that may or may not have a value.

In this chapter, you will learn about range operators and loops. Range operators allow you to represent a range of values by specifying the start and end values for a range, and you'll learn about the different types of range operators. Loops allow you to repeat an instruction or a sequence of instructions over and over. You can repeat a sequence a fixed number of times, or repeat a sequence until a condition is met. You'll learn about the different types of loops used to accomplish this.

By the end of this chapter, you'll have learned how to use ranges, and how to create and use the different types of loops (for-in, while, and repeat-while).

The following topics will be covered in this chapter...