UITableView: traversing all index paths

gistfile1.m

// [self.tableView eachIndexPath^(NSIndexPath *indexpath) { ... }];

@interface UITableView (Traverse)
typedef void (^iter)(NSIndexPath *indexPath);

- (void)eachIndexPath:(iter)iterBlock;

@end

@implementation UITableView (Traverse)

- (void)eachIndexPath:(iter)iterBlock
{
    if (iterBlock != NULL) {
        NSInteger sectionCount = [self numberOfSections];
        for (NSInteger section = 0; section < sectionCount; section++) {
            NSInteger rowCount = [self numberOfRowsInSection:section];
            for (NSInteger row = 0; row < rowCount; row++) {
                iterBlock([NSIndexPath indexPathForRow:row inSection:section]);
            }
        }
    }
}

@end