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iOS Swift Collections and Control Flow Dictionaries in Swift Modifying a Dictionary

Weird output

var airport: [String: String] = ["YVR": "Vancouver Airport", "JFK": "JFK International Airport"]

print(airport["JFK"])

When I enter the above code the output is:

Optional("JFK International Airport")

Why is it printing optional? I am using a web compiler because my mac isn't with me until next week.

1 Answer

That's actually not wrong at all. It will be explained in later course, Optional. If you are curious, you should check the videos.