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

Ryan Maneo
Ryan Maneo
4,342 Points
Posted by Ryan Maneo
Ryan Maneo
4,342 Points

Am I appending wrong?

Hi, as you can see below I appended the correct european country capitols to the "europeanCapitols" variable. But it said I was wrong, am I appending incorrectly? I compared it to my practice code, it matched up just fine.

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 value.append("Vaduz", "Brussels", "Sofia"): europeanCapitols
    }

    // I didn't show the rest here––but this is what I expected it to mean by append the values to the correct capitol groups... but it said I was wrong?
}

1 Answer

Nathan Tallack
Nathan Tallack
22,160 Points
Nathan Tallack
Nathan Tallack
22,160 Points

You were on the right track with using a case and switch. But you'd be wanting to make some cases out of the keys and then have the code for each case to do the append. It would look something like this.

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