'Binary' Generic Type Parameters.cs

using System.Text;

namespace Sandbox {

    public interface INextChar {
        public static abstract StringBuilder Build(StringBuilder? builder = null);
    }

    public sealed class ___:INextChar {
        public static StringBuilder Build(StringBuilder? builder = null) {
            builder = builder ?? new();
            return builder;
        }
    }

    public sealed class _<T>: INextChar
        where T: INextChar
    {
        public static StringBuilder Build(StringBuilder? builder = null) {
            builder = builder ?? new();
            T.Build(builder);
            builder.Append('0');
            return builder;
        }
    }

    public sealed class __<T>: INextChar
        where T: INextChar
    {
        public static StringBuilder Build(StringBuilder? builder = null) {
            builder = builder ?? new();
            T.Build(builder);
            builder.Append('1');
            return builder;
        }
    }

    public static class Program {
        public static void Main(string[] args) {

            //Output: Hello, World!
            Console.Write(__<_<_<_<_<__<_<_<_<_<__<_<_<__<__<_<
            _<_<__<__<_<__<__<_<_<__<_<_<__<__<__<
            _<__<__<__<__<_<__<__<_<__<__<__<_<__<
            __<__<_<_<_<_<_<_<__<_<_<_<_<__<__<_<
            __<_<_<__<__<__<__<_<__<__<_<_<_<__<
            __<_<__<__<_<_<_<__<__<_<__<__<_<__<
            _<__<_<_<__<__<_<_<_<_<__<_<_<__<_<
            ___>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
            >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
            >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>.Build().Translate());

            Console.ReadKey(true);
        }

        static string Translate(this StringBuilder sb) {
            var input = sb.ToString();
            var output = new StringBuilder(input.Length / 8);
            for(int i = 0;i < input.Length;i += 8) {
                byte value = Convert.ToByte(input.Substring(i,8),2);
                output.Append((char)value);
            }
            return output.ToString();
        }
    }
}