Question

我相信答案是肯定的，但是Apple的文档暗示答案是否定的。

工作日单位是从1到n的数字，其中n是一周中的天数。例如，在阳历中，n为7，星期日由1表示。weekday

该报价似乎暗示着不同的日历系统还有其他周长。在对Wikipedia进行了一些研究之后，我找不到n != 7所在的任何现代日历。

我误读了吗？ Foundation中是否有n != 7个星期的日历？

Answer 1

这不一定是保证，但是以下代码找不到除1..<8以外没有工作日范围的任何区域的日历。

let calIds: [Calendar.Identifier] = [ .buddhist, .chinese, .coptic, .ethiopicAmeteAlem, .ethiopicAmeteMihret, .gregorian, .hebrew, .indian, .islamic, .islamicCivil, .islamicTabular, .islamicUmmAlQura, .iso8601, .japanese, .persian, .republicOfChina]
for calId in calIds {
    var cal = Calendar(identifier: calId)
    for locId in Locale.availableIdentifiers {
        let locale = Locale(identifier: locId)
        cal.locale = locale

        if let weekdayMin = cal.minimumRange(of: .weekday), let weekdayMax = cal.maximumRange(of: .weekday) {
            if weekdayMin == weekdayMax {
                if weekdayMin.startIndex != 1 || weekdayMin.count != 7 {
                    print("Calendar \(calId) with locale \(locId) isn't 1..<8: \(weekdayMin)")
                }
            } else {
                print("Calendar \(calId) with locale \(locId) has a different min and max weekday range: \(weekdayMin) - \(weekdayMax)")
            }
        } else {
            print("Calendar \(calId) with locale \(locId) doesn't have both a min and max weekday range")
        }
    }
}

“工作日”是否保证在[1：7]范围内？

1 个答案: