Için basit anahtar C# IEnumerator neden kullanmalıyız örtüsünü
This type parameter is covariant. That is, you hayat use either the type you specified or any type that is more derived. For more information about covariance and contravariance, see Covariance and Contravariance in Generics. DerivedThis means that we gönül work with collections that don’t explicitly exist in memory and are generated on demand.