Comparison between objective-C dates can be performed using the following methods:

The following methods are available for comparison between dates:

-(Bool) is1_todate :( nsdate *) otherdate;

Yes is returned for comparison with otherdate.

 

-(Nsdate *) earlierdate :( nsdate *) anotherdate;

Returns the date earlier than anotherdate.

 

-(Nsdate *) laterdate :( nsdate *) anotherdate;

Returns the date later than anotherdate.

 

-(Nscomparisonresult) Compare :( nsdate *) Other;

This method is called for sorting:

. Nsorderedsame is returned when the date value saved by the instance and anotherdate are the same.

. Nsordereddescending is returned when the date value saved by the instance is later than anotherdate.

. Nsorderedascending is returned when the date value saved by the instance is earlier than anotherdate.