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Swift

Joel Arias
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Joel Arias
iOS Development with Swift Techdegree Student 3,239 Points
Posted by Joel Arias
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Joel Arias
iOS Development with Swift Techdegree Student 3,239 Points

Why we get back an optional dictionary when using a key?

In the "weatherDictionary路 example. A dictionary of type[String[String:String]] was created . When using a key to assign it to a new constant let someValue = dictionary["key"]) we get back an optional dictionary.