lazy var imageScrollView = UIScrollView().then {
    $0.translatesAutoresizingMaskIntoConstraints = false
    $0.isPagingEnabled = true
    $0.showsHorizontalScrollIndicator = false
    $0.delegate = self
  }

  private let imagePageControl = UIPageControl().then {
    $0.translatesAutoresizingMaskIntoConstraints = false
    $0.currentPage = 0
    $0.pageIndicatorTintColor = UIColor(red: 255/255, green: 255/255, blue: 255/255, alpha: 0.5)
    $0.currentPageIndicatorTintColor = .white
    $0.hidesForSinglePage = true
  }

private let imageNumberLabel = UILabel().then {
    $0.translatesAutoresizingMaskIntoConstraints = false
    $0.backgroundColor = UIColor(red: 34/255, green: 34/255, blue: 34/255, alpha: 0.5)
    $0.layer.cornerRadius = 14
    $0.clipsToBounds = true
    $0.text = "0/1"
    $0.font = .systemFont(ofSize: 12, weight: .semibold)
    $0.textColor = .white
  }

func setImageSlider(images: [String]) { // scrolliVew에 imageView 추가하는 함수
    for index in 0..<images.count {

      let imageView = UIImageView()
      imageView.image = UIImage(named: images[index])
      imageView.contentMode = .scaleAspectFit
      imageView.layer.cornerRadius = 5
      imageView.clipsToBounds = true

      let xPosition = self.contentView.frame.width * CGFloat(index)

      imageView.frame = CGRect(x: xPosition,
                               y: 0,
                               width: self.contentView.frame.width,
                               height: self.contentView.frame.width)

      imageScrollView.contentSize.width = self.contentView.frame.width * CGFloat(index+1)
      imageScrollView.addSubview(imageView)
    }
  }

extension FeedListCell: UIScrollViewDelegate { 
  func scrollViewDidScroll(_ scrollView: UIScrollView) { // scrollView가 스와이프 될 때 발생 될 이벤트
    self.imagePageControl.currentPage = Int(round(imageScrollView.contentOffset.x / UIScreen.main.bounds.width))
    self.imageNumberLabel.text = "\(imagePageControl.currentPage)/\(imagePageControl.numberOfPages)"
  }
}