Given a data structure (e.g. a hash of hashes), what's the clean/recommended way to make a deep copy for immediate use? Assume reasonable cases, where the data's not particularly large, no complicated cycles exist, and readability/maintainability/etc. are more important than speed at all costs.Given a data structure (e.g. a hash of hashes),
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在Perl中制作数据结构的深层副本的最佳方法是什么？
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