【Xcode/Swift】現時点の〜年〜月〜日を取得する

import Foundation

// MARK: - DateManager
struct DateManager { // 実行時の日付管理用のStruct
    let currentDate: Date
    let dateFormatter = DateFormatter()
    let currentDateString: String

    // MARK: - Initialize
    init() {
        currentDate = Date()
        dateFormatter.dateFormat = "yyyy/MM/dd"
        currentDateString = dateFormatter.string(from: currentDate)
    }

}

import UIKit

class ViewController: UIViewController {

    @IBOutlet private weak var currentDateLabel: UILabel!

    private let dateManager = DateManager() // インスタンス化

    override func viewDidLoad() {
        super.viewDidLoad()
        currentDateLabel.text = "\(currentDateString)日"
    }

}