int a = ({
int b = 3;
int c = 4;
int d = 5;
b + c + d;
});
NSLog(@"6666---%d",a);
6666---12
UICollectionView *collectionView = ({
collectionView = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout];
collectionView.backgroundColor = [UIColor brownColor];
collectionView.bounds = CGRectMake(0, 0, kScreenWidth, 200);
collectionView.center = self.view.center;
[self.view addSubview:collectionView];
collectionView.dataSource = self;
collectionView.showsHorizontalScrollIndicator = NO;
collectionView;
});