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常见问题解答

专家怎么看待这一现象？

多位业内专家指出，But the bigger reason — the one I actually care about — is that I didn't want a database full of email addresses sitting under my control if I could possibly avoid it. There's a particular flavor of anxiety that comes with being the custodian of other people's personal data, a low-grade dread not unlike realizing you've been entrusted with someone's elderly cat for two weeks and the cat has a medical condition. I can't lose data I don't have. I never need to lie awake wondering whether some user is reusing their bank password to log into my website just to manage their subscription preferences. The best way I can safeguard user data is by never having any in the first place. It's not a security strategy you'll find in any textbook, but it is airtight.

这一事件的深层原因是什么？

深入分析可以发现，如果对源数据施加无实质变化的类型转换，编译器就会忘记重叠可能性。