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

Francisco Quintero
PLUS
Francisco Quintero
Courses Plus Student 1,586 Points
Posted by Francisco Quintero
Francisco Quintero
Courses Plus Student 1,586 Points

How do i solve this code challenge?

am trying to solve the code challenge, but cant get the answer, this is what i have done

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 {
switch (key, value) {
    case "BEL": europeanCapitals.append("Brussels")
    case "LIE": europeanCapitals.append("Vaduz")
    case "BGR": europeanCapitals.append("Sofia")
    case "USA": otherCapitals.append("Washington D.C.")
    case "MEX": otherCapitals.append("Mexico City")
    case "BRA": otherCapitals.append("Brasilia")
    case "IND": asianCapitals.append("New Delhi")
    default: asianCapitals.append("Hanoi")
    }
}

2 Answers

Steve Hunter
Steve Hunter
57,712 Points

Hiya,

Switch on key only and append the value to the correct array. You can switch on multiple keys at once. 

switch(key){
  case "BEL", "LIE", "BGR":
    europeanCapitals.append(value)
    .
    .
}

Make sense?

Steve.

Steve Hunter
Steve Hunter
57,712 Points

The otherCapitals array is the default condition for the switch statement so do the other array completions first.

Francisco Quintero
PLUS
Francisco Quintero
Courses Plus Student 1,586 Points
Francisco Quintero
Francisco Quintero
Courses Plus Student 1,586 Points

Thank you, i knew that my problema had to do with the switch statement, i just did not know how to set it up for a dictionary, thanks for the advice

Steve Hunter
Steve Hunter
57,712 Points

Let me know how you get on ... let's make sure you've got this! :+1: