学步园

   for (; it != list_time.end();)
   {
    if (*it <= ul_count)
    {
     it = list_time.erase(it);
    }
    else
    {
     ++it;
    }
   }

下面是几个好的博客文章:

http://write.blog.csdn.net/postedit

http://www.cnblogs.com/carekee/articles/1717921.html

http://blog.csdn.net/blizmax6/article/details/6814068

http://blog.vckbase.com/zaboli/archive/2005/08/25/11444.aspx

http://blog.sina.com.cn/s/blog_80ce3a55010109qx.html

http://blog.csdn.net/wishfly/article/details/2591171