gistfile1.m

- (id)initWithCoder:(NSCoder *)coder {
  if (self = [super initWithCoder:coder]) {
    self.teams = [NSMutableArray 
                  arrayWithObjects: @"Anaheim Aardvarks", 
                                    @"Baltimore Bats", 
                                    @"California Caterpillars", 
                                    @"Denver Donkeys", 
                                    nil];
    self.addButtonItem = [[[UIBarButtonItem alloc] 
                            initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addButtonWasPressed)] 
                            autorelease];
    NSLog(@"teams RC: %d", [self.teams retainCount]);
  }
  return self;
}

- (void)dealloc {
  [teams release];
  [addButtonItem release];
  [super dealloc];
}

gistfile2.m

#import <UIKit/UIKit.h>

@interface RootViewController : UITableViewController {
  NSMutableArray *teams;
  UIBarButtonItem *addButtonItem;
}

@property (nonatomic, retain) NSMutableArray *teams;
@property (nonatomic, retain) UIBarButtonItem *addButtonItem;

- (IBAction)addButtonWasPressed;

@end

gistfile3.m

    NSMutableArray *foo = [NSMutableArray arrayWithObjects:@"one",nil];
    NSLog(@"foo RC: %d", [foo retainCount]); // 1
    [foo autorelease];
    NSLog(@"foo RC: %d", [foo retainCount]); // 1
    self.teams = foo;
    NSLog(@"foo RC: %d", [foo retainCount]); // 2