为什么自动拳击标记为警告？ [英] Why auto-boxing marked as a warning?

问题描述

我明白，自动取消打包应该小心，因为未装箱的引用可以为空。为什么自动装箱也被标记为警告？我在这里遇到一些陷阱吗？

I understand that auto un-boxing should be done with care because the reference that is being un-boxed can be null. Why is auto-boxing marked as warning as well? Are there some pitfalls I am missing here?

推荐答案

如果您不期望性能问题（在微型优化方面）您可以安全地禁用此警告。这只是一个迹象，如果你不知道自动拳击在这里发生。在具有I / O开销（由于DB事务或光盘访问）的业务逻辑代码中，自动打包从来不是一个问题。

If you don't expect performance issues (in terms of micro-optimization) you can safely disable this warning. It is just an indication in case you're not aware that auto-boxing happends here. In business-logic code where you have I/O overhead (due to DB transactions or disc access) auto-boxing is never an issue.

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