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for example, the regex [a-zA-Z] only cares about two kinds of characters: letters and everything else. so instead of individually taking derivatives for 52 alphabet characters a..z, A..Z, we can conclude from the start that there are only two kinds of characters we care about: letters ([a-zA-Z]) and non-letters ([^a-zA-Z]).
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Раскрыта новая задумка Трампа против Ирана14:57
Раскрыты траты россиян на путешествия в Международный женский день20:37
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But Navarra said the move also "puts TikTok out of step with global privacy expectations" and might reinforce wariness for some about its ownership.
В России предупредили о подготовке ВСУ к контратаке на одном направлении08:42，更多细节参见PDF资料