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

Jos Feseha
Jos Feseha
4,011 Points
Posted by Jos Feseha
Jos Feseha
4,011 Points

switch statement ,I am stucked here please help

how do I do this switch statement ....

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
}

2 Answers

Rogier Nitschelm
seal-mask
.a{fill-rule:evenodd;}techdegree
Rogier Nitschelm
iOS Development Techdegree Student 5,461 Points
Rogier Nitschelm
.a{fill-rule:evenodd;}techdegree
Rogier Nitschelm
iOS Development Techdegree Student 5,461 Points

I made a little error myself, apologies for that.

The otherCapitals would be ideal for a default case, because then we would only have to make the following:

case "BEL": // add all european countries here
  europeanCapitals.append(value)
case "IND": // add all asian countries here
  asianCapitals.append(value)
default: // the rest automatically goes here
  otherCapitals.append(value)
Jos Feseha
Jos Feseha
4,011 Points
Jos Feseha
Jos Feseha
4,011 Points

ohhw ok , Thank You , it worked perfectly !

Rogier Nitschelm
seal-mask
.a{fill-rule:evenodd;}techdegree
Rogier Nitschelm
iOS Development Techdegree Student 5,461 Points
Rogier Nitschelm
.a{fill-rule:evenodd;}techdegree
Rogier Nitschelm
iOS Development Techdegree Student 5,461 Points

Perhaps something like this?

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":
            europeanCapitals.append(value)
        case "IND":
            asianCapitals.append(value)
        default:
            break
    }
}

Because I do not entirely want to ruin the joy of figuring some additional things out: It is possible to put multiple cases on a single line, so you only need a total of 2 cases plus a default case.

Also, the default case is ideal for appending a capital to an array with capitals too. Which array of capitals would be fit for use as the default case?

Jos Feseha
Jos Feseha
4,011 Points
Jos Feseha
Jos Feseha
4,011 Points

THANK YOU So much ! , I think the asianCapitals will fit for the default case .