Return NSArray from NSDictionary

Question

I have a fetch that returns an array with dictionary in it of an attribute of a core data object.

Here is my previous question: Create Array From Attribute of NSObject F

Answer 1

The Fast Enumeration method:

NSMutableArray *data = [[NSMutableArray alloc] initWithCapacity:array.count];
for (NSDictionary *d in objects) {
  [data addObject:[d objectForKey:@"timeStamp"]];
}

The Block enumerator method:

NSMutableArray *data = [[NSMutableArray alloc] initWithCapacity:array.count];
[objects enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
  [data addObject:[obj objectForKey:@"timeStamp"]];
}];

Either way, 'data' contains just an array of NSDate instances.