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

Christian Laugesen
Christian Laugesen
440 Points

Using Switch

Hi there

I am struggling a bit solving one of the tasks.

How do I append the value to europeanCapitals, asainCapatials etc.?

Thanks a lot in advance for your help.

Kr, Christian

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
    for country in world {
      switch country {
        case "BEL", "LIE", "BGR": = europeanCapitals
        case "IND", "VNM": = asianCapitals
        default: = otherCapitals

    // End code

1 Answer

Close. But you are trying to assign arrays to switch cases, which is a definite no go. You probably meant to do something like this:

for (key, value) in world {
    // Enter your code below
    switch key {
    case "BEL","LIE","BGR": 
        europeanCapitals += [value]
    case "IND", "VNM": 

where each value in world is added to the appropriate array. There are two ways to do that; +=[value] or .append(value). The editor will take either or both, as shown above.