ios - 快速比较 NSDates

Question

我有两个 NSDate 对象，我想将其与以下代码进行比较:

    var endDate = self.object.endDate
    var thisDate = NSCalendar.currentCalendar().dateFromComponents(currentComponents)

    let test = thisDate?.compare(endDate) == NSComparisonResult.OrderedDescending

    do {
        timeRangeArray.addObject(thisDate!)
        currentComponents.minute += 15
        thisDate = NSCalendar.currentCalendar().dateFromComponents(currentComponents)
    } while thisDate?.compare(endDate) == NSComparisonResult.OrderedDescending  {
        return timeRangeArray
    }

并且总是得到 - (() -> () -> $T8) -> $T9 is not identical to NSComparsionResult

我不想为 while 语句创建另一个值，有没有其他方法可以让它工作？

Answer 1

A do-while statement看起来像这样:

do {
    statements
} while condition

你的看起来像这样:

do {
    statements
} while condition {
    // what is this???
}

我想你的意思是:

do {
    timeRangeArray.addObject(thisDate!)
    currentComponents.minute += 15
    thisDate = NSCalendar.currentCalendar().dateFromComponents(currentComponents)
} while thisDate?.compare(endDate) == NSComparisonResult.OrderedDescending  

return timeRangeArray