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

Posted by Brian Licea
Brian Licea
Courses Plus Student 796 Points

im not sure the videos taught me how to do this please help

I don't know what to do

operators.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 {
    // Enter your code below

    // End code
}
switch

2 Answers

Jeff McDivitt
Jeff McDivitt
23,970 Points
Jeff McDivitt
Jeff McDivitt
23,970 Points

Hi Brian

You need to switch on the key value of the array and then append those value to the specific Capital. You only need two switch statements because the other capital can be a default.

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(value)
    case "IND" :
        asianCapitals.append(value)
    default:
        otherCapitals.append(value)
    }
}
Shaun Ogilvy
Shaun Ogilvy
614 Points
Shaun Ogilvy
Shaun Ogilvy
614 Points

Hi Jeff,

I feel like I understood everything above other than why (value) comes after the ...Capitals.append?

could you or anyone shed some light on this? Cheers