IvanovDeveloper

//objective-c

-//random bool
srand(time(0));
int randomval = rand() % 2;
apiCall.shouldFailToLoad = (BOOL)randomval;
NSLog(@"Should fail to load:%d", apiCall.shouldFailToLoad);

-//random integer
arc4random_uniform(upper_bound)

IvanovDeveloper

__weak __typeof(self) weakSelf = self;
__strong __typeof(weakSelf) strongSelf = weakSelf;

IvanovDeveloper

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id <UIViewControllerTransitionCoordinator>)coordinator
{
    [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];
    
    [coordinator animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> context) {
        
        // Stuff you used to do in willRotateToInterfaceOrientation would go here.
        // If you don't need anything special, you can set this block to nil.
        
    } completion:^(id<UIViewControllerTransitionCoordinatorContext> context) {

IvanovDeveloper

//Obhective-C
for (NSString* family in [UIFont familyNames])
{
    NSLog(@"%@", family);
        
    for (NSString* name in [UIFont fontNamesForFamilyName: family])
    {
        NSLog(@"  %@", name);
    }
}

IvanovDeveloper

- (void)configureGradientView:(UIView *)aView {

    CAGradientLayer *gradient = [CAGradientLayer layer];
    gradient.frame = aView.bounds;

    gradient.colors = @[(id)[UIColor colorWithWhite:0.f alpha:0.01f].CGColor,
                        (id)[UIColor colorWithWhite:0.f alpha:0.02f].CGColor,
                        (id)[UIColor colorWithWhite:0.f alpha:0.03f].CGColor,
                        (id)[UIColor colorWithWhite:0.f alpha:0.2f].CGColor,
                        (id)[UIColor colorWithWhite:0.f alpha:0.3f].CGColor,