Nil-Coalescing Operator

The nil-coalescing operator ( ?? ) provides a default value when an optional is nil. It's a shorthand way to unwrap an optional if it contains a value, or to provide an alternative value if the optional is nil. This operator simplifies code by avoiding verbose if let or guard let statements when handling optional values.

Visit the following resources to learn more:

• @official@Nil-Coalescing Operator
• @video@Nil coalescing – Swift in Sixty Seconds