After the work the company had done on AppleWorks 3.0, Simonsen felt ready to jump into the Macintosh market with a “Mac AppleWorks” of their own – they called it Beagle Works. Unfortunately, other companies – giants in the Mac market such as Microsoft, Claris, and Symantec – had the same idea. Their resources were far greater than Beagle Bros had imagined, and the race was costly.
「人們只要追蹤環境中的統計資訊，就能學得非常、非常快，」雷布夏特說。「這類任務旨在模擬真實世界中的沉浸式學習情境，那裡的一切往往含糊不清，而且我們很少能立即得到回饋。」
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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.
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