June 2018
Beginner to intermediate
240 pages
3h 54m
Russian
Content preview from Алгоритмы и структуры данных. Извлечение информации на языке Java
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103
Упражнение 5
В данном примере мы предполагаем, что urlList представляет
собой набор строк, а processParagraphs — это метод, который
выполняет какие-то действия с объектом Elements, возвраща-
емым fetchWikipedia.
В этом примере показан важный момент: необходимо создать
один объект WikiFetcher и применять его для обработки всех за-
просов. При наличии нескольких экземпляров WikiFetcher они
не будут использовать минимальный интервал между запросами.
Моя реализация WikiFetcher проста, но ее легко можно ис-
пользовать неправильно, создав несколько экземпляров.
Избежать данной проблемы можно, сделав WikiFetcher
одиночкой (Singleton). Информацию об ...
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