import UIKit
import SnapKit

class ViewController: UIViewController {
    var scrollView: UIScrollView!
    var stackView: UIStackView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        scrollView = UIScrollView()
        scrollView.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(scrollView)
        
        scrollView.snp.makeConstraints { (make) in
            make.edges.equalToSuperview()
        }
        
        stackView = UIStackView()
        stackView.translatesAutoresizingMaskIntoConstraints = false
        stackView.axis = .horizontal
        scrollView.addSubview(stackView)
        
        stackView.snp.makeConstraints { (make) in
            make.edges.equalToSuperview()
        }
        
        for _ in 1 ..< 100 {
            let vw = UIButton(type: UIButtonType.system)
            vw.setTitle("Button", for: [])
            stackView.addArrangedSubview(vw)
        }
    }
}