TheEleganceOfBlock.mm

    
    self.collectionView = ({
        UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
        UICollectionView *collectionView       = [[UICollectionView alloc] initWithFrame:self.view.bounds
                                                                    collectionViewLayout:flowLayout];
        collectionView.delegate   = self;
        collectionView.dataSource = self;
        
        collectionView;
    });