IEnumerable.Let Definition

void Main()
{
	var r = new Random().Values(0, 10).Let(list => list);
	var l1 = r.Take(10);
	var l2 = r.Take(10);
	l1.SequenceEqual(l2).Dump("Should be equal");
	var l3 = r.Take(20);
	l3.Take(10).SequenceEqual(l1).Dump("Should start with same sequence");
	var l4 = r.Take(20);
	l3.SequenceEqual(l4);
}
}

public static class Extensions {

public static IEnumerable<int> Values(
	this Random random, 
	int minValue, int maxValue)
{
	while (true)
		yield return random.Next(minValue, maxValue);
}

public static IEnumerable<U> Let<T, U>(this IEnumerable<T> source, Func<IEnumerable<T>, IEnumerable<U>> f) {
	return f(source);
}