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

Matthew Ingram
PLUS
Matthew Ingram
Courses Plus Student 4,718 Points
Posted by Matthew Ingram
Matthew Ingram
Courses Plus Student 4,718 Points

Need help with a Switch statement code change in 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 capitals in world{ // Enter your code below switch capitals{ case "BEL", "LIE", "BGR": europeanCapitals.append[world[capitals]] case "IND", "VNM": asianCapitals.append[world[capitals]] default: otherCapitals.append[world[capitals]] } // End code }

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 capitals in world{
    // Enter your code below
    switch capitals{
    case "BEL", "LIE", "BGR": europeanCapitals.append[world[capitals]]
    case "IND", "VNM": asianCapitals.append[world[capitals]] 
    default: otherCapitals.append[world[capitals]]
    }
    // End code
}

2 Answers

David Papandrew
David Papandrew
8,386 Points
David Papandrew
David Papandrew
8,386 Points

Hi Matthew,

A couple of things to consider:

1) The starter code in the challenge gives you a for loop that uses (key, value), so you will want to use that rather than create a new variable called "capitals"

2) Switch statement will switch off the key and then use the value to append to the proper array.

Here is the corrected code:

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 key {
    case "BEL", "LIE", "BGR": europeanCapitals.append(value)
    case "IND", "VNM": asianCapitals.append(value)
    default: otherCapitals.append(value)
    }
    // End code
}
Matthew Ingram
PLUS
Matthew Ingram
Courses Plus Student 4,718 Points
Matthew Ingram
Matthew Ingram
Courses Plus Student 4,718 Points

I knew it was something little like that thanks for the help!