ios - NSDate is older than today -

i understand how compare 2 nsdate objects, e.g:

if ([olderdate compare:[nsdate date]] == nsorderedascending) {      //  }

however compare date components, not time since time can make comparison inaccurate in case.

is possible compare day, month , year?

since ios 8, nscalendar has number of convenience methods sort of comparison.

for example, there's:

- (nsdate *)startofdayfordate:(nsdate *)date ns_available(10_9, 8_0);

you can start of given day date (such [nsdate date] "now") , compare against that.

there's also:

- (nscomparisonresult)comparedate:(nsdate *)date1 todate:(nsdate *)date2 tounitgranularity:(nscalendarunit)unit ns_available(10_9, 8_0);

you can call granularity nscalendarunitday comparison want directly.

there others, too. see nscalendar.h details, since these methods don't seem in class reference documentation, yet.

Braziel