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

Posted by Unsubscribed User
Unsubscribed User
2,263 Points

This works in Xcode but shows as incorrect in the code challenge.

I'm curious why this code fails when it works in Xcode. I've captured all the European capitols. Can someone explain why it's wrong?

switch.swift 
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 {
    switch key  {
    case "BEL", "BGR", "LIE":
        europeanCapitals.append(String(world[key]))
    case "IND", "VNM":
        asianCapitals.append(String(world[key]))
    default:
        otherCapitals.append(String(world[key]))
    }
}

1 Answer

jcorum
jcorum
71,830 Points

They want this:

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

P.S., you can append() or use +=
Both work.

Unsubscribed User
Unsubscribed User
2,263 Points

Thanks. I just figured out that I was doing it the hard way. Though my easier answer (albeit correct) is still less elegant than yours.

switch key  {
case "BEL", "BGR", "LIE":
    europeanCapitals.append(String(value))
case "IND", "VNM":
    asianCapitals.append(String(value))
default:
    otherCapitals.append(String(value))
}