At a point that we want to handle the effects, you would put a block that will match on the effects used in the do expression. Currently in Swift this is the catch keyword, but since this has to be more general I think when is a better fit. It would read as “do that, and when this happens, do this other thing”.
我们要继续往下挖，去看看那个被大多数新闻忽略的、更深层的根源——两大帝国的幽灵。
。业内人士推荐WPS下载最新地址作为进阶阅读
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