Question

Possible Duplicate:
Sort NSArray of date strings or objects

I want to sort an array which contain Dates in ascending order

Answer 1

it is a very generic way to sort any NSArray with any type of objects, using blocks. now, it just is specified as solution for your current problem with the NSDate objects.

NSArray *_arrayOfDates = // your array with the NSDate objects;
NSArray *_sortedArrayOfDates = [_arrayOfDates sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
    return [((NSDate *) obj1) compare:((NSDate *)obj2)];
}];
NSLog(@"%@", _sortedArrayOfDates);

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please note: you can use NSMutableArray with -sortUsingComparator: method, which provides the same result, but the array will be sorted inside of itself.