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iOS Swift 2.0 Collections and Control Flow Dictionaries Recap: Dictionaries

Edward Parks
Edward Parks
1,385 Points
Posted by Edward Parks
Edward Parks
1,385 Points

Not Equivalent?!

How is it that: dict.updateValue("yetAnotherValue", forKey: 3) and dict[3] = "yetAnotherValue" not equivalent?

1 Answer

Steven Deutsch
Steven Deutsch
21,046 Points
Steven Deutsch
Steven Deutsch
21,046 Points

Hey Edward Parks,

What exactly do you mean by them not being equivalent? Both are valid ways of updating a dictionary value for a specific key or creating a dictionary value for that key if it does not currently exist.

The difference is the that updateValue is a method that you call on your dictionary. Whereas, when you are using the assignment operator, =, you are assigning a new value to that dictionary directly.

They are just two different ways of accomplishing the same thing.

Hope this helps. Good Luck!