How to determine if an NSDate is today?

Question

How to check if an NSDate belongs to today?

I used to check it using first 10 characters from [aDate description]. [[aDate descriptio

Answer 1

Refer to Apple's documentation entry entitled "Performing Calendar Calculations" [link].

Listing 13 on that page suggests that to determine the number of midnights between days, you use:

- (NSInteger)midnightsFromDate:(NSDate *)startDate toDate:(NSDate *)endDate
{
    NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
    NSInteger startDay = [calendar ordinalityOfUnit:NSDayCalendarUnit
                                             inUnit:NSEraCalendarUnit
                                            forDate:startDate];
    NSInteger endDay = [calendar ordinalityOfUnit:NSDayCalendarUnit
                                           inUnit:NSEraCalendarUnit
                                          forDate:endDate];
    return endDay - startDay;
}

You may then determine if two days are the same by using that method and seeing if it returns 0 or not.