What is the purpose/advantage of using yield return iterators in C#?

Question

All of the examples I\'ve seen of using yield return x; inside a C# method could be done in the same way by just returning the whole list. In those cases, is th

Answer 1

If the entire list is gigantic, it might eat a lot of memory just to sit around, whereas with the yield you only play with what you need, when you need it, regardless of how many items there are.