在《哈利波特》中斯内普看起来周身都围绕着阴郁的气息,而且还总是找哈利波特的麻烦,好像是个坏人一样,但其实斯内普是个好人,从一开始就在默默的帮助着哈利波特,只不过他不会表达自己的情感也不能表达出自己对哈
I am trying to use generic for the first time and trying to typecast my result returned from database to programmer defined data type. How can I do this.