How to reduce few minutes for current date in Swift 2.0

Question

How can I reduce 5 or 10 minutes from current time and then store it as date format in Swift 2.0 ?

let now = NSDate()
var reducedTime = ???? \\ Here I want 10 minutes reduced from current time.

If current time is 02:20:00, then reducedTime should be 02:10:00 How can I do this in a simplest way ???

Have you read the documentation - https://developer.apple.com/library/ios/documentation/Cocoa/Reference/Foundation/Classes/NSDate_Class/#//apple_ref/doc/uid/20000188-SW8 ? Hint: adding a negative number is the same as subtraction — Paulw11, Oct 08 '15 at 21:01
That was just the first link that Google through up. Since it is Cocoa foundation it makes no difference but I have changed the link. — Paulw11, Oct 08 '15 at 21:05

score 3 · Accepted Answer · answered Oct 08 '15 at 21:02

3

You can use calendar method dateByAddingUnit and subtract 10 minutes fro the date.

let now = NSDate()

let reducedTime = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)?.dateByAddingUnit(.Minute, value: -10, toDate: now, options: NSCalendarOptions())

answered Oct 08 '15 at 21:02

Leo Dabus

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Or `dateByAddiTimeInterval`? – Paulw11 Oct 08 '15 at 21:06
1

@Paulw11 I prefer working with calendar units – Leo Dabus Oct 08 '15 at 21:07
3

@Paulw11 This is a safer approach. Too many people naively use `dateByAddingTimeInterval` to add days and mistakenly think it's OK to add `60*60*24` seconds. For this case, either is probably OK, but this approach is better in general. – rmaddy Oct 08 '15 at 21:10
thanks perfect answer – Mehul Sep 26 '16 at 10:25

How to reduce few minutes for current date in Swift 2.0

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