Optional Chaining

Optional chaining is a feature that allows you to access properties, methods, and subscripts of an optional value. If the optional contains a value, the property, method, or subscript is accessed as normal. However, if the optional is nil, the entire chain gracefully fails and returns nil without causing a runtime error. This provides a concise way to conditionally access nested properties or methods when dealing with optionals.

Visit the following resources to learn more:

• @official@Optional Chaining
• @article@Optional Binding vs. Optional Chaining: Swift Techniques to Avoid Runtime Errors
• @video@Introduction to Swift: Optional chaining