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overrides react context values at runtime by finding the appropriate context provider.
。关于这个话题，wps提供了深入分析
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The new API makes you choose one of these four explicitly:
The C++ community deserves better than reassurance. It deserves a clear-eyed assessment of where these tools help, where they don’t, and what the realistic alternatives are. Because the organizations making language-choice decisions right now — the ones reading NSA advisories and CISA guidance — aren’t going to wait for C++29 profiles. They’re choosing today. And “we have a plan” is not the same as “we have a solution.”