Quiz 2
1. The keyword to define a function.
2. Used to provide a value when an Optional is nil.
3. Syntax used to safely unwrap an optional.
4. A blueprint for creating objects.
5. Value types that support methods and initializers.
6. Defines a blueprint of methods or properties.
7. A self-contained block of functionality.
8. An enumeration type.
9. Used to iterate over a collection.
10. Used to check multiple conditions.
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