Objective C - Very slow code
===

I'm using **ScriptingBridge.framework** in order to interact with **Mail.app**. The following code is taking about 30 seconds to load 100 messages. I'm running it on a 2.8GHz Core i7 MacBook Pro with 4GB (1333 MHz DDR3) mem. My OS is 10.7.4.


    MailApplication *mailApp = [SBApplication applicationWithBundleIdentifier:@"com.apple.mail"];
    MailMailbox *inbox = [mailApp inbox];
    SBElementArray *messages = [inbox messages];
            
    NSMutableArray *tmp = [NSMutableArray arrayWithCapacity:[messages count]];
    for (MailMessage *message in messages) {
       RRMailItem *mailitem = [RRMailItem new];
       [mailitem setSender:[message sender]];
       [mailitem setSubject:[message subject]];
       [mailitem setDate:[message dateSent]];
                
       if (message.mailAttachments.count > 0) {
          [mailitem setHasAttachment:YES];
       }
                        
       [tmp addObject:mailitem];
    }

RRMailItem is a simple object as follow. It's just an object to hold values. It doesn't have any method:

    @interface RRMailItem : NSObject
    
    @property NSString *sender;
    @property NSString *subject;
    @property NSDate *date;
    @property BOOL hasAttachment;
    
    @end

If I remove the `if (message.mailAttachments.count > 0)`, the execution time goes down by 50%, to 15 seconds to load the same 100 messages. Much better, but still high. And I need the IF...

How can I improve the code performance? Any hints and tips are welcome.

TIA,

Bob