At work I happen to use Django, which has an extension called "reversion". It allows reverting objects in your database to a previous revision. Pretty clever name, but it burnt into my mind so much, I accidentally mixed up the two.
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state, it's easy to say whether it's thread safe. If there's no global
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Conversely, the inliner must also check that each name in the callee function body would refer to the same thing when it is spliced into the call site. In other words, none of the callee’s names is shadowed or missing in the caller. For missing names, the inliner may need to insert additional imports.，详情可参考博客
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