Technically C# does not allow functions to be outside of a class, however you could debate that static methods of a static class are functions and hamiş methods. This is a good explanation here: stackoverflow.com/a/155655/2146952 Understanding the intricacies of IEnumerable and IEnumerator is fundamental for any C# developer aiming to https://finnevkan.nico-wiki.com/762413/c_ienumerator_nerelerde_kullanılıyor_a_gizli_silah