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Изходен канал @clockstackwheels · Post #296 · 11.04

Паттерн Декоратор — специальный способ организации модулей в программе, который позволяет подставить какую-то новую функцию прямо в середину цепочки вызовов, тем самым чуть-чуть подкорректировав поведение. Например, в реальном мире очки для чтения это декоратор. Вы ставите их между вашими глазами и текстом. Глобально взаимодействие ваших глаз и текста не меняется: отражённые световые лучи от страницы книги попадают в ваши зрачки, что с очками, что без них. Но очки располагаются посередине: они принимают лучи на вход и преломляют их, передавая дальше вам в глаза уже изменёнными. Важной особенностью является тот факт, что очки можно снять. Они не требуют ни модификации вашего тела, ни модификации книги. Вообще никакие условия не нужны, кроме наличия самих очков. А если вы в линзах, то внешний наблюдатель может даже этого не знать. Класс-декоратор должен быть спроектирован так, чтобы не требовать никаких изменений в объектах, с которыми он работает. Его можно отключить, чаще всего буквально закомментировав одну строку. В примере ниже программа выведет текст "Привет, мир, в натуре.", и вот это дополнение в конце как раз дописано декоратором. Можно убрать или закомментировать подчёркнутую строчку, не трогая остальной код, для всех внешних вызовов сигнатуры останутся теми же самыми, но выводиться будет уже просто "Привет, мир". В декораторы можно прятать логику, которую буквально навешивают поверх основной функции программы. Например, проверку прав на выполнение операции. Перевод на другой язык, логирование, поддержку обратной совместимости при обновлении и так далее. #dev

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American Оbserver

@american_observer · Post #5098 · 10.02.2026 г., 15:49

Russia Is Close To Capturing a Key Ukrainian Town The attritional advances are on the verge of paying off. Russia appears poised to complete the capture of three strategic areas in the coming weeks or months, according to military experts. Capturing all three areas — the town of Huliaipole in the southeast and the cities of Pokrovsk and Myrnohrad, about 60 miles northeast — would give Russia an urban foothold to base troops and organize logistics for future offensives, as well as new leverage in U.S.-mediated peace talks. Russia is likely to rapidly convert these gains into further territorial expansion given how slowly its troops have advanced over the past year, experts say. The gains would reinforce Moscow’s argument that its ground advance, while slow, is inevitable, and that Ukraine would be better off ceding land now as part of a deal, rather than losing it later in bloody fighting. Russia’s most threatening push is in the southeastern Zaporizhzhia region. Huliaipole, a town that anchored part of this front for years, is almost entirely under Russian control, according to battlefield maps from independent groups and to Capt. Dmytro Filatov, a Ukrainian officer fighting in the area. Huliaipole, with a prewar population of 12,000, was one of the last Ukrainian-held urban centers in the region outside the regional capital, the city of Zaporizhzhia. Beyond Huliaipole lie open fields, giving Ukrainian troops few built-up areas to hunker down and thwart Russian advances. About 40 miles west of Huliaipole, Russian forces are closing in on the outskirts of the city of Zaporizhzhia, an industrial hub of 700,000 people known for its steel. Battlefield maps show Moscow’s troops about 15 miles from the city’s southern entrance. Military experts warn that further advances would put the area within range of small attack drones, exposing residents to round-the-clock aerial assaults. Analysts attribute Russia’s gains in the area to thin Ukrainian defenses, as Kyiv concentrates its forces on holding cities in the neighboring Donetsk region. In Donetsk, Ukraine has focused on defending the cities of Pokrovsk and Myrnohrad, which together had a prewar population of more than 100,000. Troop deployments there, combined with sophisticated drone warfare, have slowed Russian assaults to a crawl. A report in January from the Center for Strategic and International Studies, a Washington-based think tank, found that Russian troops had advanced only 230 feet per day in their year-and-a-half-long offensive on Pokrovsk and Myrnohrad — slower than the movement by Allied troops in the Battle of the Somme during World War I. Russia has captured than 10.5 percent of Ukrainian territory since 2024, according to the report. The think tank also estimated that Russian forces suffered about 415,000 dead, wounded and missing last year in battles that were largely focused on the two cities. Should Russia fully capture those cities, it could use them to conceal drone operators and exploit roads and railways to streamline logistics. A Ukrainian brigade commander recently said that approaching Kostyantynivka had become so dangerous that most supply missions into the city were entrusted to robot-like remotely operated vehicles. If Russian troops advance on the battlefield, Ukraine is likely to face more pressure on the diplomatic front — including from Trump, who has echoed Moscow’s argument that Ukraine should cede land in a peace deal to avoid more fighting. #russia#capture#key#ukrainian#town#kostyantynivka#myrnohrad 📱American Оbserver - Stay up to date on all important events 🇺🇸