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iOS Swift 2.0 Collections and Control Flow Dictionaries Modifying a Dictionary

Matthew Daugherty
Matthew Daugherty
1,017 Points
Posted by Matthew Daugherty
Matthew Daugherty
1,017 Points

Trouble with Key

Hello,

I am having trouble with XCode whenever I try to do the first step in the video.

I am instructed to type in airportCodes["LGA"] in order to isolate that line, but whenever I do, XCode gives me an error and says "Cannot subscript a value of type '[String]' with an index of type 'String'"

It seems like a very simple thing, but I'm confused as to what I'm doing wrong, as I'm typing in exactly what is in the video.

Any help is appreciated, thanks.

1 Answer

Dalisson Figueiredo
Dalisson Figueiredo
7,731 Points
Dalisson Figueiredo
Dalisson Figueiredo
7,731 Points

You should post your code so we can see exactly what you are doing. Anyway see my example:

var airportCodes = ["LGA" : "La Guardia",
                    "DUB" : "Dublin",
                    "GIG" : "Galeao"]

airportCodes["LGA"] = "La Guardia International"

print(airportCodes["LGA"])

airportCodes.updateValue("Rio de Janeiro International", forKey: "GIG")

airportCodes.removeValueForKey("DUB")
Matthew Daugherty
Matthew Daugherty
1,017 Points
Matthew Daugherty
Matthew Daugherty
1,017 Points

I see now it was an issue with my dictionary in the video prior, so it's been taken care of! Thank you for your help!