lottery プロジェクト の Swift 版 (『MAC OS X COCOA プログラミング』3,4章)

LotteryEntry.swift

import Foundation

class LotteryEntry: NSObject {
    var entryDate: NSDate
    var firstNumber: Int
    var secondNumber: Int
    
    init(initWithEntryDate theDate: NSDate) {
        entryDate = theDate
        firstNumber =  random() % 100 + 1
        secondNumber = random() % 100 + 1
    }
    
    func setEntryDate(date: NSDate) -> Void {
        entryDate = date
    }
    
    func description() -> NSString {
        var df = NSDateFormatter()
        df.timeStyle = .NoStyle
        df.dateStyle = .MediumStyle
//        df.dateFormat = "YYYY-MM-dd"
        return "\(df.stringFromDate(entryDate)) = \(firstNumber) and \(secondNumber)"
    }
}

main.swift

import Foundation

let now = NSDate()
let cal = NSCalendar.currentCalendar()
var weekComponents = NSDateComponents()

srandom(CUnsignedInt(time(nil)));

var array: [LotteryEntry] = []
for var i = 0; i < 10; i++ {
    weekComponents.setValue(i, forComponent: NSCalendarUnit.CalendarUnitWeekOfYear)
    if let iWeeksFromNow = cal.dateByAddingComponents(weekComponents, toDate: now, options: NSCalendarOptions(0)) {
        let newEntry = LotteryEntry(initWithEntryDate: iWeeksFromNow)
        array.append(newEntry)
    }
}
for entryToPrint in array {
    NSLog("%@", entryToPrint)
}