The Ultimate Guide To C# IEnumerable Nasıl Kullanılır

The Ultimate Guide To C# IEnumerable Nasıl Kullanılır

Blog Article

Birli mentioned by Mr. Copsey, this katışıksız the benefit of providing decoupling from the implementation, but I'm of the contention that a clear definition of the smallest subset of interface functionality birli possible (i.

Queue ve Stack: Queue ve Stack kabilinden done strüktürları da IEnumerator kullanılarak elemanlarının sırasıyla yahut sert sırasıyla emeklenmesi sağlanabilir.

type seq Collaborate with us on GitHub The source for this content sevimli be found on GitHub, where you kişi also create and review issues and pull requests. For more information, see our contributor guide.

But now see the below code we have changed IEnumerable to IQueryable. It creates a SQL Query at the server side and only necessary veri is sent to the client side.

IEnumerable özgü just one method whereas IEnumerator has 2 methods (MoveNext and Reset) and a property Current. For easy understanding consider IEnumerable as a box that contains IEnumerator inside it (though not through inheritance or containment). See the code for better understanding:

IEnumerator is a class that enumerates collections. A class that implements IEnumerable returns an IEnumerator. A class that implements IEnumerator özgü custom enumeration logic.

Whenever I'm "stacking" LINQ expressions, I use IEnumerable, because by only specifying the behavior I give LINQ a chance to defer evaluation and possibly optimize the yetişek. Remember how LINQ doesn't generate the SQL to query the database until you enumerate it? Consider this:

Koleksiyonlar Arasında Gezinmeyi Katkısızlar: IEnumerable, koleksiyonlar beyninde kolaylıkla gezinmenizi katkısızlar. GetEnumerator metodu ile koleksiyonun her bir elemanına erişebilir ve bu elemanlar üzerinde muamele yapabilirsiniz.

Your linq expression returns an enumeration, and by default the expression executes when you iterate through using the foreach. An IEnumerable linq statement executes when you iterate the foreach, but you dirilik force it to iterate sooner using .ToList().

for instance, suppose you decided to read a large file C# IEnumerable Kullanımı line by line and doing something on that, therefore you birey write your own ReaderEnumrable to read your file

" This is false, because the where clause is getting called on an IEnumerable and that only knows how to loop through objects which are already coming from the database. If you made the return of AllSpotted() and the parameters of Feline() and Canine() into IQueryable, then the filter would happen in SQL and this answer C# IEnumerable Kullanımı would make sense.

IEnumerable is an interface that tells us that we gönül enumerate over a sequence of T instances. C# IEnumerable Kullanımı If you need to allow somebody to see and perform some action for each object in a collection, C# IEnumerable Temel Özellikleri this is adequate.

RastoRasto 17.6k4848 gold badges161161 silver badges253253 bronze badges 5 1 Unfortunately you have to make your own. C# IEnumerable Kullanımı The most conservative approach would be for you to cache all the items inside your new enumerable, to handle enumerators that dirilik only be enumerated once, so there is no general class for this in the runtime.

If you are writing a class, and your class implements the IEnumerable interface (generic (T) or derece) you're allowing any consumer of your class to iterate over its collection without knowing how it's structured.