{"width":"100%","description":"\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9 public static T[] FindDuplicatedElements<T>( this IReadOnlyList<T> self ) { return self .GroupBy( x => x ) .Where( x => 2 <= x.Count() ) .Select( x => x.Key ) .ToArray() ; }","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbaba-s.hatenablog.com%2Fentry%2F2023%2F06%2F22%2F133950\" title=\"\u3010C#\u3011\u914d\u5217\u3084\u30ea\u30b9\u30c8\u304b\u3089\u91cd\u8907\u3059\u308b\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u62e1\u5f35\u30e1\u30bd\u30c3\u30c9 - \u30b3\u30ac\u30cd\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","categories":["C#"],"image_url":null,"provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/baba_s/","author_name":"baba_s","type":"rich","published":"2023-06-22 13:39:50","blog_url":"https://baba-s.hatenablog.com/","version":"1.0","provider_url":"https://hatena.blog","blog_title":"\u30b3\u30ac\u30cd\u30d6\u30ed\u30b0","url":"https://baba-s.hatenablog.com/entry/2023/06/22/133950","title":"\u3010C#\u3011\u914d\u5217\u3084\u30ea\u30b9\u30c8\u304b\u3089\u91cd\u8907\u3059\u308b\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u62e1\u5f35\u30e1\u30bd\u30c3\u30c9"}