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iOS Swift 2.0 Collections and Control Flow Control Flow With Conditional Statements Working with Switch Statements

Switch Statement

i can't solve this because i could not quit understand what they want help would be much appreciated

var europeanCapitals: [String] = []
var asianCapitals: [String] = []
var otherCapitals: [String] = []

let world = [
    "BEL": "Brussels",
    "LIE": "Vaduz",
    "BGR": "Sofia",
    "USA": "Washington D.C.",
    "MEX": "Mexico City",
    "BRA": "Brasilia",
    "IND": "New Delhi",
    "VNM": "Hanoi"]

for (key, value) in world {
    // Enter your code below
    switch key{
        case "europeanCapitals": print("BEL", "LIE", "BGR" )
        case "asianCapitals": print("IND", "VNM")
    default: otherCapitals
    // End code

1 Answer

You have a couple of problems here...

First, since you are switching on each key of the world dictionary, each case should have a key or keys it is trying to match. For example, your first case should start with...

case "BEL", "LIE", "BGR":

Second, rather than print out results, they're asking you to build up the arrays they have set up in the first three lines. I used the append function to do this, so my first case looked like this...

case "BEL", "LIE", "BGR": europeanCapitals.append(value)

Hopefully I've given you enough clues here to complete the other lines and pass the challenge.