using System.Collections.Generic;

namespace System.Linq;

public static class EnumerableEx
{
	public static IEnumerable<T> Append<T>(this IEnumerable<T> source, T element)
	{
		foreach (T item in source)
		{
			yield return item;
		}
		yield return element;
	}

	public static IEnumerable<T> Prepend<T>(this IEnumerable<T> source, T element)
	{
		yield return element;
		foreach (T item in source)
		{
			yield return item;
		}
	}
}