摘要: $lessons[] = new Seminar(4, new TimedCostStrategy() );$lessons[] = new Lecture(4, new FixedCostStrategy() ); foreach ($lessons as $lesson) { print " l 阅读全文
posted @ 2018-03-13 22:00 BboyTzsteady 阅读(160) 评论(0) 推荐(0) 编辑