Singleton declaration

gistfile1.txt

@interface
+(id)sharedInstance;


@implementation
- (id)init {
    self = [super init];
    
    
#if !(TARGET_IPHONE_SIMULATOR)
    
    
#else
    
    
#endif
    if(self)
    {
      //init some stuff
    }
    
    return self;
    
}



+(id)sharedInstance
{
    static dispatch_once_t pred;
    static YourObject *sharedInstance = nil;
    dispatch_once(&pred, ^{
        sharedInstance = [[YourObject alloc] init];
    });
    return sharedInstance;
}

- (void)dealloc
{
    
    abort();
}