关于strongly in this block is like

//避免block中变量被循环引用
 __block MakeOrderViewController *blockSelf = self;
chvc.calendarblock = ^(CalendarDayModel *model){   
    NSLog(@"%@",[model toString]);
    if(model.style==CellDayTypeClick)
    {
        [blockSelf->dataArray addObject:model.toString];
        
        NSSet *set = [NSSet setWithArray:blockSelf->dataArray];
        dataArray=[[set allObjects] mutableCopy];
        
        [blockSelf->dataArray sortUsingComparator:^NSComparisonResult(NSNumber *obj1, NSNumber *obj2) {
            return [obj1 compare:obj2];
        }];
    }
    else
    {
        [blockSelf->dataArray removeObject:model.toString];
    }
};