我们可以发现,日常生活中看到的玻璃酒瓶底部,大多是凹陷的。有人认为,如果酒瓶底部凹陷,瓶子会放得更稳。还有人认为,酒里的沉淀物会在瓶底凹陷的周围落成一圈,倒酒的时候不容易被倒出来。还有人认为发酵的酒会
I have various ObservableC开发者_高级运维ollections of different object types.I\'d like to write a single method that will take a collection of any of these object types and return a new collection wh