9.9 Conclusion 结论

The decision to split or join modules should be based on complexity. Pick the structure that results in the best information hiding, the fewest dependencies, and the deepest interfaces.

拆分或加入模块的决定应基于复杂性。选择一种结构，它可以隐藏最佳的信息，最少的依赖关系和最深的接口。