Mreyna3

struct Person {
   let firstName: String
   let lastName: String
}

let persons = [Person(firstName: "Eric", lastName: "Franz"),
Person(firstName: "Dwayne", lastName: "Carter"),
Person(firstName: "John", lastName: "Lucas")]

persons.reduce("") { $0 == "" ? $1.name : $0 + "," + $1.name }

Mreyna3

let sum = processor.batchSum
print(newsum)

Mreyna3

   func processBatch(){
        
        for _ in 0..<queue.getCount(){
            batchSum -= queue.peek()!
          //1
            print("deueuing \(queue.dequeue()!.format())")
            
        }
        //2
        print("deueuing \(batchSum!.format())")

Mreyna3

     fileprivate var batchSum : Double!{
        willSet{
            if (newValue > 0 && newValue > batchSum){
                print("\((newValue - batchSum).format()) enqueud into the batch, the updated batch value is: \(newValue!.format())")
            }
            defaults.set(newValue, forKey: "batch_sum")
        }
    }

Mreyna3

public extension Double {
    func format() -> String{
        let formatter = NumberFormatter()
        formatter.numberStyle = .currency
        let formattedDouble = formatter.string(from: self as NSNumber)
        return formattedDouble!
    }
}

Mreyna3

var transactionsDataSource1 = [0.32,0.10,0.01,0.02]

var processor = PaymentProcessor()
for i in 0..<transactionsDataSource1.count {
    processor.enqueue(transaction: transactionsDataSource1[i])
}

let sum = processor.batchSum
print(sum)

Mreyna3

func resetBatchSum(){
        //1 
        batchSum = 0.0
        //2
        defaults.set(batchSum, forKey: "batch_sum")
    }
    

Mreyna3

 func processBatch(){
        // 1
        for _ in 0..<queue.getCount(){
          // 2
            batchSum -= queue.peek()!
            print("deueuing \(queue.dequeue()!)")
            
        }
        print("deueuing \(batchSum!)")
        // 3

Mreyna3

  private func addToBatch(transaction: Double) {
    // 1
        queue.enqueue(element: transaction)
    //2
        batchSum += transaction
        
        if(shouldProcessBatch()){
            // 3
            processBatch()
        }else{

Mreyna3

 public func enqueue(transaction: Double){
        if(shouldProcessBatch()){
         //1
            processBatch()
            addToBatch(transaction: transaction)
        }else{
        //2
            addToBatch(transaction: transaction)
        }
    }