ForEachOne for IEnumerable<T> not having to use ToList().ForEach()

IEnumerableExtensions.cs

using System;
using System.Collections.Generic;
using System.Linq;

namespace System.Collections.Generics
{
	public static class IEnumerableExtensions
	{
		public static IEnumerable<T> ForEachOne<T>(this IEnumerable<T> enumerable, Action<T> action)
		{
			foreach (var t in enumerable)
			{
				action(t);
				yield return t;
			}
		}
	}
}