摘要: benifit: 1.make developers extremely productive is code reuse, which is the ability to derive a class that inherits all of the capabilities of a base 阅读全文
posted @ 2016-07-21 17:23 PanPan003 阅读(283) 评论(0) 推荐(0)
摘要: 1.A type that defines an event member allows the type (or instances of the type) to notify other objects that something special has happened 2.definin 阅读全文
posted @ 2016-07-21 09:57 PanPan003 阅读(277) 评论(0) 推荐(0)