Swift 中的日期时间自然语言近似

Swift 中的日期/时间自然语言近似

let now = Date()
print(now) // 输出当前的日期和时间

let tomorrow = Calendar.current.date(byAdding: .day, value: 1, to: now)
print(tomorrow) // 输出明天的日期和时间
let nextWeek = Calendar.current.date(byAdding: .weekOfYear, value: 1, to: now)
print(nextWeek) // 输出下周的日期和时间
let nextMonth = Calendar.current.date(byAdding: .month, value: 1, to: now)
print(nextMonth) // 输出下个月的日期和时间
let nextYear = Calendar.current.date(byAdding: .year, value: 1, to: now)
print(nextYear) // 输出明年的日期和时间

let date1 = Date()
let date2 = Calendar.current.date(byAdding: .day, value: 1, to: date1)!
let result = date1.compare(date2)
if result == .orderedAscending {
    print("date1 在 date2 之前")
} else if result == .orderedDescending {
    print("date1 在 date2 之后")
} else {
    print("date1 和 date2 相同")
}

let startDate = Date()
let endDate = Calendar.current.date(byAdding: .day, value: 1, to: startDate)!
let components = Calendar.current.dateComponents([.year, .month, .day], from: startDate, to: endDate)
print("相差 \(components.year ?? 0) 年 \(components.month ?? 0) 个月 \(components.day ?? 0) 天")