NSDate beginning of day and end of day

Question

    -(NSDate *)beginningOfDay:(NSDate *)date
{
    NSCalendar *cal = [NSCalendar currentCalendar];
    NSDateComponents *components = [cal components:( NSMonthCalend         


        

Answer 1

Since iOS 8.0+ / macOS 10.12+ / tvOS 10.0+ / watchOS 3.0+ there is a built in function in the Foundation, which you can use out of the box. No need to implement own functions.

public func startOfDay(for date: Date) -> Date

So you can use it this way:

let midnightDate = Calendar(identifier: .gregorian).startOfDay(for: Date())

It's worth to remember, that this takes upon consideration the device time zone. You can set .timeZone on calendar if you want to have eg UTC zone.

Link to the Apple reference pages: https://developer.apple.com/reference/foundation/nscalendar/1417161-startofday.