Optionals and nil

In Swift, an optional is a type that can hold either a value or the absence of a value (represented by nil). It's a way to indicate that a variable might not have a value at a particular time. nil itself represents the lack of a value for a variable of an optional type. Optionals are used to handle situations where a value might be missing, preventing unexpected errors and crashes in your code.

Visit the following resources to learn more:

• @official@Optionals
• @video@Introduction to Optionals