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func getSomethingFromBackground(completion: @escaping (String)->()) {
  DispatchQueue.global().async {
    completion("Hello world!") 
  }
}

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class UIXibView: UIView {
    
    public var nibName:String? { return String(describing: type(of: self)) }
    
    public var contentView: UIView!
    
    override public init(frame: CGRect) {
        super.init(frame: frame)
        awakeFromNib()
    }

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override open func awakeFromNib() {
        super.awakeFromNib()
        let nibName = String(describing: type(of: self))
        guard let view = Bundle.main.loadNibNamed(nibName, owner: self, options: nil)?.first as? UIView else { return }
        view.frame = self.bounds
        view.autoresizingMask = [.flexibleHeight,.flexibleWidth]
        self.addSubview(view)
}

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enum AppEnvironments {
    case Dev, Pre, Pro
}

var environment: AppEnvironments {
    get {
        let bundleId = Bundle.main.bundleIdentifier ?? ""
        switch bundleId {
        case "com.timbrit.dev": return .Dev
        case "com.timbrit.pre": return .Pre

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#Set here your Environment.plist name
ENVIRONMENT="DEV" 
#Environment.plist path
ENVIRONMENT_PLIST="$PROJECT_DIR/AppName/Environments.plist" 

#Get app name from Environment.plist
APP_NAME=$(/usr/libexec/PlistBuddy -c "Print :$ENVIRONMENT:APP_NAME" "$ENVIRONMENT_PLIST")
#Get bundle identifier from Environment.plist
BUNDLE_ID=$(/usr/libexec/PlistBuddy -c "Print :$ENVIRONMENT:BUNDLE_IDENTIFIER" "$ENVIRONMENT_PLIST")

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{ 
   "auto_renew_status_change_date":"2019-09-20 11:13:26 Etc/GMT",
   "environment":"Sandbox",
   "auto_renew_status":"false",
   "auto_renew_status_change_date_pst":"2019-09-20 04:13:26 America/Los_Angeles",
   "latest_expired_receipt":"ewoJInNpZ25hdHVyZSIgPSAiQTVZc0kwRUFlZER0TWRpalVXYk5rcTJG...",
   "latest_expired_receipt_info":{ 
      "original_purchase_date_pst":"2019-09-20 03:44:04 America/Los_Angeles",
      "quantity":"1",
      "subscription_group_identifier":"205957",

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{
    "status": 0,
    "environment": "Sandbox",
    "receipt": {
        "receipt_type": "ProductionSandbox",
        "adam_id": 0,
        "app_item_id": 0,
        "bundle_id": "com.company.appName",
        "application_version": "3583",
        "download_id": 0,

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{
  "password" : "79b4e6583c2...ca7d504ed97",
  "receipt-data" : "MIIeZwYJKoZIhvcNAQcCoIIeWDCCHlQCAQExCzAJBgUrDgMCGgUAMIIOCAYJKoZ..."
}

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var receiptData: String? {
  guard
  let url = Bundle.main.appStoreReceiptURL,
  let data = try? Data(contentsOf: url)
  else { return nil }
  return data.base64EncodedString()
}

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func purchase(_ product: SKProduct) {
    guard SKPaymentQueue.canMakePayments() else {
        return
    }
    
    let payment = SKPayment(product: product)
    let queue = SKPaymentQueue.default()
    queue.add(payment)
    queue.add(self) //Delegate
}