std::list< int> List;
      std::list< int>::iterator itList;
      for( itList = List.begin(); itList != List.end(); )
      {
            if( WillDelete( *itList) )
            {
               itList = List.erase( itList);
            }
            else
               itList++;
      }

    std::list< int> List;
      std::list< int>::iterator itList;
      for( itList = List.begin(); itList != List.end(); )
      {
            if( WillDelete( *itList) )
            {
               List.erase(itList++);
            }
            else
               itList++;
      }

      std::list< int> List;
      std::list< int>::iterator it, next;
      for( it = List.begin(), next = it, next ++; it != List.end(); it = next, ++next)
      {
            if( WillDelete( *it) )
            {
               List.erase(it);
            }
      }

std::vector <PACK_PRINT>::iterator It ;
for(It=printItems.begin();It!=printItems.end();)
{
  //我是說這里怎么判斷printItems printItems 里PACK_PRINT.bh =0

  if( It.bh ==0) //是這樣嗎?
  {//刪除
       It=printItems.erase(It);
  }
  else
  {//不刪除
       ++It;
  }
}

std::vector <PACK_PRINT> printItems;
int i = 0;
while(i < printItems.size())
{

          if(printItems[i].bh == 0)  //這里比如我想把 printItems 時PACK_PRINT.bh =0 的刪除如何寫喲。另外這樣刪除有錯嗎？
          {//刪除
                printItems.erase(printItems.begin() + i);
          }
          else
          {//不刪除
                ++i;
          }
}