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

Posted by Billy Potts
Billy Potts
Courses Plus Student 2,344 Points

can someone help me with this switch statement

I need to append the values to capitals and I'm lost right now

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 {
    // Enter your code below
    switch world {
    case "Bel", "LIE", "BGR", "BRA" : europeanCapitals.append
    case "VNM, "IND": asianCapitals.append 
    default: otherCaptials.append
    }
    // End code
}

1 Answer

Jennifer Nordell
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STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

There are a couple of problems here. First and foremost, you never tell the code what to append. It wants you to append the value at that key. Secondly, there's a few spelling errors. You've said key "Bel" which should be "BEL". And you've misspelled otherCapitals. Also, you're missing a closing quotation mark after VNM. Take a look at how I coded this:

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

Here, we're appending the value at that key. So for example, if our key is equal to "IND" the value "New Delhi" will be appended to the asianCapitals array. Hope this clears things up!