23:27, 27 февраля 2026Россия
按照计划，到 2027 年底，东风日产将共计推出 6 款全新新能源车型（包括已上市的 N7 和 N6），目标是将新能源车的销量占比提升至 50% 以上，并实现年出口量 10 万辆。
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Мерц резко сменил риторику во время встречи в Китае09:25
Abstract:Package managers are legion. Every programming language and operating system has its own solution, each with subtly different semantics for dependency resolution. This fragmentation prevents multilingual projects from expressing precise dependencies across language ecosystems; it leaves external system and hardware dependencies implicit and unversioned; it obscures security vulnerabilities that lie in the full dependency graph. We present the \textit{Package Calculus}, a formalism for dependency resolution that unifies the core semantics of diverse package managers. Through a series of formal reductions, we show how this core is expressive enough to model the diversity that real-world package managers employ in their dependency expression languages. By using the Package Calculus as the intermediate representation of dependencies, we enable translation between distinct package managers and resolution across ecosystems.