nsdatecomponents

I'm trying to set a particular date for a unit test: NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; NSDateComponents *components = [[[NSDateComponents alloc] init] autorelease]; [components setCalendar:calendar]; [components setYear:2011]; [components setMonth:5]; [components setDay:12]; [components setHour:1]; [components setMinute:0]; [components setSecond:0]; NSDate *date = [calendar dateFromComponents:components]; NSLog(@"Date I tried to set: %@", date); However, this prints out "Date I tried to set: 2011-05-11 17:00:00 +0000." The date seems

Crashing for large interval between dates while trying to use date components in swift (for example dates used is 16 August 1979 to 11 may 2053) The code for date components is ComponentsforDetail = (Calendar.current as NSCalendar).components([.second], from: FromDateValue!, to: ToValueDate!, options: []) Using breakpoints i found out the thread_exc happens in an assembly line code libswiftFoundation.dylib`static Foundation.DateComponents._unconditionallyBridgeFromObjectiveC (Swift.Optional<__ObjC.NSDateComponents>) -> Foundation.DateComponents: 0x16cf280 <+0>: push {r4, r5, r7, lr} 0x16cf284

How can I get the exact difference (in decimal) between 2 values of NSDate . Eg. Jan 15 2016 to Jul 15 2017 = 1.5 Years . I can use something like: NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitYear, fromDate: date1, toDate: date1, options: nil).year but this gives me absolute values . i.e. for above example it would give me 1 Year . Is it possible to get exact values correct to at least a few decimal places? The terms you've used here are misleading. When you say "absolute" you mean "integral." And when you say "exact" you mean "within some desired precision." Let's say

I have in the past used the below function to add on a specific time interval using NSDateComponents to an existing date. (NSDate *)dateByAddingComponents:(NSDateComponents *)comps toDate:(NSDate *)date options:(NSCalendarOptions)opts From iOS8 the week value is deprecated for NSDateComponents , which means I can't achieve what I want to do: generate a new NSDate by adding a certain number of weeks to a given NSDate . Any help would be greatly appreciated. Update: As Zaph said in his answer, Apple actually recommends using weekOfYear or weekOfMonth instead of the answer I provided. View Zaph's

Im trying to print out the name of the day of the week i.e Monday, Tuesday, Wednesday. I currently have this bit of code that does just that. I was wondering if there is a way to get rid of my switch statement and make this better. Thanks! func getDayOfWeek(_ today: String) -> String? { let formatter = DateFormatter() formatter.dateFormat = "yyyy-MM-dd" guard let todayDate = formatter.date(from: today) else { return nil } let myCalendar = Calendar(identifier: .gregorian) let weekDay = myCalendar.component(.weekday, from: todayDate) switch weekDay { case 1: return "Sunday" case 2: return