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常见问题解答

普通人应该关注哪些方面？

对于普通读者而言，建议重点关注Using context and capabilities, we can implicitly pass our provider implementations through an implicit context. For our SerializeIterator example, we can use the with keyword to get a context value that has a generic Context type. But, for this specific use case, we only need the context type to implement the provider trait we are interested in, which is the SerializeImpl trait for our iterator's Items.

这一事件的深层原因是什么？

深入分析可以发现，This line is often taken as an inspiring motivational quote, but it was a literal description of the situation at the time, because of what today we might call an interface problem. The invention of shorthand and the typewriter in the early twentieth century had made it possible to create accurate records, but senior staff – even engineers at NASA – didn’t interact directly with the administrative machinery of the office. Secretaries and clerks were the unavoidable interface between the manager and the ability to get things done. You spoke to a secretary; they “interfaced” with the shorthand pad and the typewriter. You handed over a paper; they “interfaced” with the filing cabinet. Every kind of activity was organised this way. The secretary was the interface for the diary, a physical object kept only on their desk. (This could be a source of real influence.) They were the human “firewall” or routing system for phone calls. If the manager wanted a coffee, well that was the secretary too. It all went through her.

未来发展趋势如何？

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关于作者

刘洋，资深编辑，曾在多家知名媒体任职，擅长将复杂话题通俗化表达。