CODEWITHSUNDEEP
swift4
dreadbot
dreadbot

Reputation: 962

Swift 4 How to return a smaller array from array of dictionaries

I'm trying to sort and then cut 20 quiz questions from an array containing 50. The quiz questions are dictionaries.

    var quizQuestionsRaw = [[String:String]]()
    var quizQuestions = [[String:String]]()
    quizQuestionsRaw = GKRandomSource.sharedRandom().arrayByShufflingObjects(in: quizQuestionsRaw) as! [[String:String]]

Then I tried

quizQuestions = quizQuestionsRaw.removeFirst(30) as! [[String:String]]

But I just got an error. Can someone help with that? Thanks.

Upvotes: 1

Views: 43

Answers (1)

Abhishek Dave
Abhishek Dave

Reputation: 346

Ok, Try this.. 

//First We'll Create an Extension to Shuffle Array
extension Array
{
    mutating func shuffle()
    {
          for _ in 0..<10
        {
              sort { (_,_) in arc4random() < arc4random() }
     }
  }
}

 // Replace this Array of Dictionary With your Q&A Array
 var array:[[String: String]] = [["Q1":"A1"],["Q2":"A2"],["Q3":"A3"],["Q4":"A4"],["Q5":"A5"]....["Q30":"A30"]]
 array.shuffle()

  // This line will return last 20 elements of array
 array.suffix(20)

If you're using Swift 4.2 or later version you don't need to create an extension to shuffle array in that case, this line is sufficient 

array.shuffled()

Good Luck :)

Upvotes: 2

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