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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M5 Max 本次则有 18+32 和 18+40 核可选，以及 16 核神经网络加速器。仅从处理器规模上看，M5 Pro 与 M5 Max 毫无疑问都是 GPU 优先的。，详情可参考新收录的资料
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