ãã®è¨äºã§ã¯ãå¿åã¡ã½ããã¨ã©ã ãå¼ã®æå³ã®éãã«ã¤ãã¦èãã¦ã¿ããã â åãããã«ä½¿ããå¿åã¡ã½ããã¨ã©ã ãå¼ å¿åã¡ã½ããã¨ã©ã ãå¼ã¯ãåãããã«ä½¿ããã¨ãã§ããå ´é¢ãå¤ãã ä¾ãã°ã以ä¸ã®ãããªããªã²ã¼ããå¼æ°ã«ã¨ãã¡ã½ããããã£ãã¨ãã¦ã using System; using System.Collections.Generic; static class Enumerable { // è¿°èªã«åºã¥ãã¦å¤ã®ã·ã¼ã±ã³ã¹ããã£ã«ã¿ã¼å¦ç public static IEnumerable<TSource> Where<TSource>(this IEnumerable<TSource> source, Func<TSource, bool> predicate) { foreach (var item in source) { if (predicate(item)) yield
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