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 derece methods. This is a good explanation here: stackoverflow.com/a/155655/2146952 String EndsWith Yararlanmaı: String bileğfiilkeni içinde son hanesi üzerinde Method ile tamlanan karakterin var olup https://ricardohynbo.wonderkingwiki.com/779923/5_temel_unsurları_için_c_ienumerator_neden_kullanmalıyız