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 Collections and Control Flow Control Flow With Conditional Statements Working With Switch Statements

William Ferrara
William Ferrara
4,481 Points

When I run my code in Xcode it works fine, but treehouse is saying I need to append the values to their proper arrays

When I run my code in Xcode it works fine, but treehouse is saying I need to append the values to their proper arrays

operators.swift
var europeanCapitals: [String] = ["BEL" , "LIE" , "BGR"]
var asianCapitals: [String] = ["IND" , "VNW" , ]
var otherCapitals: [String] = ["USA" , "MEX" , "BRA"]

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

for (city, value) in world {
    switch city {
    case "BEL": print("Brussels")
    case "LIE": print("Vaduz")
    case "BGR": print("Sofia")
    case "USA": print("Washington D.C.")
    case "MEX": print("Mexico City")
    case "BRA": print("Brasilia")
    case "IND": print("New Delhi")
    case "VNM": print("Hanoi")

    default: print("Bitch, I think we're lost")

1 Answer

In general for challenges you shouldn't modify existing code unless asked to do so. For example the variable declarations at the top should stay as provided. The instructions want you to append values to the appropriate array based on the key and give an example:

For cases where the key is a European country, append the value (not the key!) to the europeanCapitals array

So instead of a print statement like this

case "BEL": print("Brussels")

you would have

case "BEL": europeanCapitals.append(value)

The instructions also state what to do with the default case

for the default case, append the values to otherCapitals