Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

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

Is this an instance where I use the append method and if so am I just using it incorrectly?

I honestly have no clue on what to do, sometimes these tasks are too hard. I would love some help.

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 world {
    case "LIE", "BEL", "BGR" europeanCapitals.append (key)
     case "IND", "VNM"  asianCapitals.append
      case "BRA", "MEX", "USA" otherCapitals.append
    // End code

1 Answer

Hi Charles,

You are so close with that! You've done the hard bit.

You want to append the value after switching on the key. And you need a colon after each case:

    for (key, value) in world {
    // Enter your code below
    switch key {
      case "LIE", "BEL", "BGR": europeanCapitals.append(value)
      case "IND", "VNM":  asianCapitals.append(value)
      case "BRA", "MEX", "USA": otherCapitals.append(value)
      default: break

That should work for you.


Awesome thanks Steve!

No problem - glad you got it fixed!