Create two instances of Computer? using the failable initializer. One instance should use values that will have a value within the optional, and the other should result in nil. Use if-let syntax to...

Instances - How do I do this using Swift code?

Extracted text: Create two instances of Computer? using the failable initializer. One instance should use values that will have a value within the optional, and the other should result in nil. Use if-let syntax to unwrap each of the Computer? objects and print the ram and yearManufactured if the optional contains a value.