๐ Date
frameworks โฉ Foundation โฉ Date
DateFormatter will assume the current calendar and time zone setting from your device. ... Date is a specific point in time, independent of any calendar or time zone. ๐ Understanding Date and DateComponents - Sarun
import Foundation // Date
extension Date {
/* ------- ๆไธๅคฉ็็นๅฎๆๅป ------- */
// date.at(hour: h, minute: m, second: s)
public func at(hour h: Int, minute m: Int = 0, second s: Int = 0) -> Date {
Calendar.current.date(bySettingHour: h, minute: m, second: s, of: self)!
}
// date.morning, date.noon, date.evening
public var start : Date { at(hour: 0) }
public var morning: Date { at(hour: 8) }
public var noon : Date { at(hour: 12) }
public var evening: Date { at(hour: 18) }
/* ------- ็ธ้ๆธๅคฉใๆธๆใๆธๅนด็ๆๅป ------- */
// date.offset(days: n)
public func offset(days n: Int) -> Date {
Calendar.current.date(byAdding: .day, value: n, to: self)!
}
// date.offset(months: n)
public func offset(months n: Int) -> Date {
Calendar.current.date(byAdding: .month, value: n, to: self)!
}
// date.offset(days: n)
public func offset(years n: Int) -> Date {
Calendar.current.date(byAdding: .year, value: n, to: self)!
}
// date.after(days: n), .before(days: n), .dayBefore, .dayAfter
public func after (days n: Int) -> Date { offset(days : n) }
public func before(days n: Int) -> Date { offset(days : -n) }
public func after (months n: Int) -> Date { offset(months: n) }
public func before(months n: Int) -> Date { offset(months: -n) }
public func after (years n: Int) -> Date { offset(years : n) }
public func before(years n: Int) -> Date { offset(years : -n) }
public var dayBefore : Date { before(days : 1).noon }
public var dayAfter : Date { after (days : 1).noon }
public var monthBefore: Date { before(months: 1).noon }
public var monthAfter : Date { after (months: 1).noon }
public var yearBefore : Date { before(years : 1).noon }
public var yearAfter : Date { after (years : 1).noon }
/* ------- ๆไธๅคฉ็ๅนดใๆใๆฅใๆใๅใ็ง ------- */
// date.component(comp)
public func component(_ comp: Calendar.Component) -> Int {
Calendar.current.component(comp, from: self)
}
// date.month, .hour, .minute, .second
public var year : Int { component(.year ) }
public var month : Int { component(.month ) }
public var hour : Int { component(.hour ) }
public var minute: Int { component(.minute) }
public var second: Int { component(.second) }
/* ------- ๅ
ถไป ------- */
// date.isLastDayOfMonth
public var isLastDayOfMonth: Bool {
return dayAfter.month != month
}
/* ------- static methods ------- */
// .now, .yesterday, .tomorrow
public static var now : Date { Date() }
public static var yesterday: Date { Date.now.dayBefore }
public static var tomorrow : Date { Date.now.dayAfter }
// d1 - d2 (seconds)
public static func - (d1: Date, d2: Date) -> TimeInterval {
d1.timeIntervalSince(d2)
}
// Date.random(between: d1, and: d2)
public static func random(between d1: Date, and d2: Date) -> Date {
let start = min(d1, d2)
let end = max(d1, d2)
let span = TimeInterval.random(in: start.timeIntervalSince1970...end.timeIntervalSince1970)
return Date(timeIntervalSince1970: span)
}
// Date.random(in: d1...d2)
public static func random(in range: ClosedRange<Date>) -> Date {
let start = range.lowerBound
let end = range.upperBound
let span = TimeInterval.random(in: start.timeIntervalSince1970...end.timeIntervalSince1970)
return Date(timeIntervalSince1970: span)
}
}Last updated