coryhymel

    /**
     Recusivly pre load an array of PFObjects.
     
     - parameter items:      The items to preload.
     - parameter completion: Invoked once all loading in the background has been completed. If an error occured it will be passed back otherwise `success` will be `true` with a `nil` error parameter.
     */
    func preloadItems(items: [PFObject], completion: (success: Bool, error: NSError?) -> ()) {
        
        func recursiveLoad(index: Int) {
            

coryhymel

#ifndef IS_WIDESCREEN
#define IS_WIDESCREEN   (fabs((double)[[UIScreen mainScreen] bounds].size.height - (double)568) < DBL_EPSILON)
#endif

#ifndef IS_IPHONE
#define IS_IPHONE       ([[[UIDevice currentDevice] model] isEqualToString:@"iPhone"])
#endif

#ifndef IS_IPOD
#define IS_IPOD         ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"])

coryhymel

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        //background processing goes here
        dispatch_async(dispatch_get_main_queue(), ^{
                //update UI here
        });
});

coryhymel

NSArray *stores = ...;
CLLocation *myLocation = ...;

NSMutableArray *nearestStores = [NSMutableArray array];
CLRegion *nearest100kmRegion = [CLRegion initCircularRegionWithCenter:[myLocation coordinate]
                                                               radius:100000
                                                           identifier:@"someIdentifier"];

// We will need to enumerate all stores to ensure that there are no more
// than 25 objects within the defined region.

coryhymel

dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_group_t group = dispatch_group_create();
 
// Add a task to the group
dispatch_group_async(group, queue, ^{
   // Some asynchronous work
});
 
// Do some other work while the tasks execute.
 

coryhymel

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wobjc-protocol-method-implementation"

// do your override

#pragma clang diagnostic pop

coryhymel

UILabel *myLabel....    

CABasicAnimation *shake = [CABasicAnimation animationWithKeyPath:@"position"];
    [shake setDuration:0.1];
    [shake setRepeatCount:2];
    [shake setAutoreverses:YES];
    [shake setFromValue:[NSValue valueWithCGPoint:
                         CGPointMake(myLabel.center.x - 5,myLabel.center.y)]];
    [shake setToValue:[NSValue valueWithCGPoint:
                       CGPointMake(myLabel.center.x + 5, myLabel.center.y)]];

coryhymel

- (NSInteger)daysBetweenDate:(NSDate*)fromDateTime andDate:(NSDate*)toDateTime
{
    NSDate *fromDate;
    NSDate *toDate;
    
    NSCalendar *calendar = [NSCalendar currentCalendar];
    
    [calendar rangeOfUnit:NSDayCalendarUnit startDate:&fromDate
                 interval:NULL forDate:fromDateTime];
    [calendar rangeOfUnit:NSDayCalendarUnit startDate:&toDate