当日期不在开始和结束日期内时 swift

Question

我有以下代码检查 selectedDate 是否在开始和结束日期内。我想知道当日期不在 2 个日期内时如何说，但我不知道如何去做。我尝试使用 '!==' 但它显示 'Type of expression is ambiguous without more context'

while newStartDate.compare(selectedDate) == .OrderedAscending && newEndDate.compare(selectedDate) == .OrderedDescending {
     print("\(selectedDate) is within \(newStartDate) & \(newEndDate)")     
}

Answer 1

那呢？

while newStartDate.compare(selectedDate) == .OrderedDescending || newEndDate.compare(selectedDate) == .OrderedAscending {
   print("\(selectedDate) is within \(newStartDate) & \(newEndDate)")
}

所选日期必须在开始日期之前或结束日期之后。

Answer 2

我认为 JulianM 的是正确的。在我看来，为了使其更具可读性，您可以使用 !=:

进行第一次尝试

while newStartDate.compare(selectedDate) != .OrderedAscending || newEndDate.compare(selectedDate) != .OrderedDescending {
    print("\(selectedDate) is within \(newStartDate) & \(newEndDate)")
}

当日期不在开始和结束日期内时 swift

while a date is not within a start and end date swift

nsdate

while-loop

swift