CoreTweet.CoreTweetSupplement.ToString C# (CSharp) Method

        private static string ToString(IList<DoubleUtf16Char> source, int start, int count)
        {
            var arr = new char[count * 2];
            var end = start + count;
            var strLen = 0;
            for (var i = start; i < end; i++)
            {
                var x = source[i];
                arr[strLen++] = x.X;
                if (char.IsHighSurrogate(x.X))
                    arr[strLen++] = x.Y;
            }
            return new string(arr, 0, strLen);
        }