[添付]タイムラインの文字列表示処理 | Codetter（こーどったー）

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        /// <summary>
        /// 同じ型の配列を結合します。
        /// </summary>
        /// <typeparam name="T">配列の型</typeparam>
        /// <param name="args">結合する配列</param>
        /// <returns></returns>
        public static IList<T> ConcatArray<T>(params IEnumerable<T>[] args)
        {
            var ie = new List<T>();
            if (args != null)
                args.ForEach(arg =>
                    {
                        if (arg != null)
                            ie.AddRange(arg);
                    });
            return ie;
        }
    /// <summary>
    /// 拡張メソッド
    /// </summary>
    public static class Extensions
    {
        public static void ForEach<T>(this T[] root, Action<T> loop)
        {
            if (loop != null) foreach (var item in root) loop(item);
        }
        public static void ForEach<T>(this IEnumerable<T> root, Action<T, int> loop)
        {
            if (loop != null)
                foreach (var item in root.Select((v, i) => new { v, i }))
                    loop(item.v, item.i);
        }
    }
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