DevMemo

// objc if (@available(iOS 9, *)) {}     // swift if #available(iOS 9, *) {}

git clean -df

- (CGSize)collectionView:(UICollectionView *)collectionView                   layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{     CGSize cellSize = CGSizeMake(375, 100);       return cellSize; }