Lisp_Object is a 64-bit machine word. For pointers, because heap allocations are 8-byte aligned, their lowest 3 bits are guaranteed to be 000. Emacs simply embeds the 3-bit type tag directly into these "free" zero bits. For immediate integers (fixnums), the upper 62 bits hold the actual value.
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根据IDC统计，2025年中国折叠屏手机销量约1001万部，同比增幅仅为9.2%，较2024年30.8%的增长率显著放缓。华为以71.8%的市场占有率遥遥领先，其余国内品牌仅能瓜分不足30%的市场空间。
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从震撼世界到突然消失，Sora的生命周期仅有两年零一个月。
Jean Smart, Hacks