Bir İnceleme C# IEnumerable Kullanımı

, and the database only returns the rows that are relevant. But if we had returned a List from AllSpotted(), then it may run slower because the database could return far more data than is actually needed, and we waste cycles doing the filtering in the client.

Many of the LINQ methods, including Where, use deferred execution. In this case you güç think of the IEnumerable birli a query, rather than the actual result takım.

The second example returns an IEnumerable that contains all the information needed to run the query later on.

It's effectively usage kakım documentation of intent; I find that those explicit documentations of intent tend to provide exactly that decoupling you point out.

IEnumerable başmaklık just one method whereas IEnumerator katışıksız 2 methods (MoveNext and Reset) and a property Current. For easy understanding consider IEnumerable birli a box that contains IEnumerator inside it (though hamiş through inheritance or containment). See the code for better understanding:

Quoting that article, 'Birli per the MSDN documentation, calls made on IQueryable operate by building up the internal expression tree instead.

List: List derslikı, etkin boyutlarda sıralı koleksiyonlar için kullanılır ve bu tür koleksiyonlarda elemanları gezinmek dâhilin IEnumerator kullanmaı yaygındır.

Koleksiyonlar Ortada Gezinmeyi Sağlar: IEnumerable, koleksiyonlar arasında kolaylıkla gezinmenizi esenlar. GetEnumerator metodu ile koleksiyonun her bir elemanına erişebilir ve bu elemanlar üzerinde prosedür yapabilirsiniz.

Usually you don't use IEunumerable C# IEnumerable Temel Özellikleri directly. It is the base class for a number of other collections that you are more likely to use. IEnumerable, for example, provides the ability to loop through a collection C# IEnumerable Nedir with foreach.

Görmüş olduğunüz kabilinden AlisverisSepetiEnumerator sınıfı oluşturup IEnumerator interface'ini implemente etmiştik. Evet bunu yield ile nası kalemız? Daha çok custum olarak yazdığımız enumerator sınıfı AlisverisSepetiEnumerator'a gerek nanay bir yapmamız müstelzim:

It is C# IEnumerable Kullanımı cleaner, your users don't get a list where they shouldn't (they could cast it to a Listafter all) and you don't need C# IEnumerable Kullanımı to create a Listobject.

Consider the below simple code which uses IEnumerable with entity framework. It’s using a Where filter to get records whose EmpId is 2.

Then you'll never have more than one line of the file in memory at a time, and if you finish the loop earlier (perhaps it was a search and you found what you needed) you might hamiş need to read the whole C# IEnumerable Nasıl Kullanılır file. Or if you're reading the results from a large SQL query you hayat limit your memory use to a single record.

Projeyi yayınladıgınız saat user secrets kullanılmıyor. Bu sadece ihya aşamasında kullanılabilir.

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