obtener - string to date swift 4

Creando una fecha futura en swift con NSDate()

Question

Recibo un error: "Falta el argumento para el parámetro ''codificador'' en la llamada" para el siguiente código:

var components = NSDateComponents()     
components.setValue(1,forComponent: NSCalendarUnit.CalendarUnitMonth);
var expirationDate = NSCalendar.currentCalendar().dateByAddingComponents(components,       toDate: NSDate(),options:0)

Los documentos piden:

NSCalendar.currentCalendar().dateByAddingComponents(<#comps: NSDateComponents?#>, toDate: <#NSDate?#>, options: <#NSCalendarOptions#>)

¿Alguien puede ver lo que me estoy perdiendo? No veo un parámetro llamado ''codificador'' requerido.

Answer 1

La última sintaxis de Swift 3 :

var components = DateComponents()
components.setValue(1, for: .month)
let date: Date = Date()
let expirationDate = Calendar.current.date(byAdding: components, to: date)

Answer 2

Sintaxis para Swift 3

var components = DateComponents()
components.setValue(1, forComponent: .month)
let date: Date = Date()
let expirationDate = Calendar.current.date(byAdding: components, to: date, options: [])

Answer 3

como se ve estar con

swift 4.x

let date = Date()
var components = DateComponents()
components.setValue(1, for: .month)
let expirationDate = Calendar.current.date(byAdding: components, to: date)

swift 2.0

let components: NSDateComponents = NSDateComponents()
components.setValue(1, forComponent: NSCalendarUnit.Month);
let date: NSDate = NSDate()
let expirationDate = NSCalendar.currentCalendar().dateByAddingComponents(components, toDate: date, options: NSCalendarOptions(rawValue: 0))

swift 1.2

var components = NSDateComponents()
components.setValue(1, forComponent: NSCalendarUnit.CalendarUnitMonth);
let date: NSDate = NSDate()
var expirationDate = NSCalendar.currentCalendar().dateByAddingComponents(components, toDate: date, options: NSCalendarOptions(0))

Answer 4

Versión Swift 4

var components = DateComponents()
components.setValue(1, for: .month)
let date: Date = Date()
let expirationDate = Calendar.current.date(byAdding: components, to: date, wrappingComponents: false)

¡Espero que esto ayude!