extensions.cs

		public static T Tap<T>(this T self, Action<T> f)
		{
			f(self);
			return self;
		}

		public static T2 Pipe<T, T2>(this T self, Func<T, T2> f)
			=> f(self);


		public static bool IsNull(this object item) => item == null;

		public static int ToEpoch(this DateTime date)
		{
			var epoch = new DateTime(1970, 1, 1);
			var epochTimeSpan = date - epoch;
			return (int)epochTimeSpan.TotalSeconds;
		} 
		
		public static void ForEach<T>(this IEnumerable<T> self, Action<T> f)
		{
			foreach (var item in self)
			{
				f(item);
			}
		}
		
		public static async Task<byte[]> ToByteArrayAsync(this Stream stream)
		{
			using (var ms = new MemoryStream())
			{
				await stream.CopyToAsync(ms);
				return ms.ToArray();
			}
		}

		public static string GetFileName(this IFormFile self)
			=> ContentDispositionHeaderValue.Parse(self.ContentDisposition).FileName.Trim('"');

		public static Stream SerializeToJsonStream(this object value)
		{
			var s = new MemoryStream();
			var writer = new StreamWriter(s);
			var jsonWriter = new JsonTextWriter(writer);
			var ser = new JsonSerializer()
			{
				TypeNameHandling = TypeNameHandling.Auto
			};
			ser.Serialize(jsonWriter, value);
			jsonWriter.Flush();
			s.Seek(0, SeekOrigin.Begin);
			return s;
		}

		public static T DeserializeJsonFromStream<T>(this Stream self)
			=> new JsonSerializer().Deserialize<T>(new JsonTextReader(new StreamReader(self)));



		public static T Get<T>(this IConfiguration config)
	where T : new() => new T().Tap(x => config.Bind(x));