The basic thumb rule toidentify a cross-cutting concern is: If a concern is repeated across classesspread over layers / tiers, then it is a cross-cutting concern.
识别一个横切关注点的经验法则是：如果一个关注点反复出现在不同类及层次中，那它是一个横切关注点。
The basic thumb rule toidentify a cross-cutting concern is: If a concern is repeated across classesspread over layers / tiers, then it is a cross-cutting concern.
识别一个横切关注点的经验法则是：如果一个关注点反复出现在不同类及层次中，那它是一个横切关注点。
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