The tagged pointer trick Emacs uses is a specific instance of a broader pattern in systems programming: the tagged union. In the next post, we will look at how the same idea appears across different languages and eras — from manual C union + discriminant, to C++ std::variant, to Rust's enum. Same problem, different levels of language support.
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该发言人称，侵害相关国家的政治制度和领土完整、干涉内政、公然提倡颠覆体制企图的一切形式威胁和军事行动在任何情况下都不可容忍，应遭到全世界的谴责和反对。
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25-летний турист из России загадочно пропал в Таиланде20:46