Доллар резко подорожал на фоне ситуации вокруг Ирана

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Таким образом глава РФПИ поддержал версию о том, что изменение слов экс-президента США могло быть не случайной ошибкой, а результатом целенаправленных действий. Никаких официальных подтверждений этой информации от британской стороны пока не поступало.

That’s the cornerstone of Modular Design and that’s why it was already mentioned several times in this article. It’s about “hiding in a box” how something is implemented without requiring other developers, who just use your module, to know any of the inner workings. It hides inner complexity. That implies that the public API of the module is on the higher level of abstraction (agnostic of the details). That’s desirable because it lowers the cognitive load on the users (they don’t have to be experts in whatever the module is doing as long as the public API is easy). Another benefit is that it allows you to change the implementation without breaking other modules.

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For instance, let’s say we’re programming a module that controls an electrical gate of a canal lock. If the public API was to require a voltage value needed for the engine to lift the gate - that would violate the Information Hiding a great deal. First of all, the user of the module would need to know the details of the engine. Second of all, changing the gate to a pneumatic one would completely break all the code that uses the module. In terms of software design the equivalent violation would be to catch SqlException in the Business-Module. If I were to propose an implementation that leverages Information Hiding, it would be to accept the opening ratio instead of the voltage.,详情可参考51吃瓜