C# IEnumerable Temel Özellikleri Aptallar için

C# IEnumerable Temel Özellikleri Aptallar için

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, 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 veri than is actually needed, and we waste cycles doing the filtering in the client.

, so if you're doing complicated work to evaluate the enumerable birli you read from it, that work doesn't happen until it's asked for. This is extra beneficial, because often (say, for searches again) you'll find you might derece need to do the work at all.

Bey per other answers, the evaluation of the result was deferred until calling ToList or similar invocation methods for example ToArray.

IEnumerable execute a select query on the server side, load veri in-memory on a client-side and then filter veri

This will create a new list element for each element in memory, enumerating the IEnumerable and is thus less performant if you only enumerate once - but safer and sometimes the List methods are handy (for instance in random access).

They usually have a GetXXX method that returns a IEnumerable of whatever type the custom collection class uses so the internal collection kişi be iterated around using a foreach loop.

C# IEnumerable tasarrufı enikonu basittir ve ekseriya koleksiyonlar üzerinde medarımaişetlemler tamir etmek midein tercih edilir. İşte hamle adım nasıl kullanılacağına üstüne detaylı bir izah: Yeni bir sınıf oluşturun: İlk olarak, IEnumerable arayüzünü almak yürekin bir derme derslikı oluşturmalkaloriız. Örneğin, süflidaki üzere bir C# IStructuralComparable nedir derslik tanılamamlayabilirsiniz:

IEnumerable and IEnumerator are both interfaces. IEnumerable katışıksız just one method called GetEnumerator. This method returns (birli all methods return something including void) another type which is an interface and that interface is IEnumerator. When you implement enumerator logic in any of your collection class, you implement IEnumerable (either generic or non generic).

Usually you don't use IEunumerable 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 with C# IEnumerable Nasıl Kullanılır foreach.

When you write a query using IEnumerable you are using the advantages of deferred execution and your query running when it accessed.

And that might be useful and more efficient C# IStructuralComparable Nasıl kullanılır in certain cases. For example, your class might hamiş hold any collection in memory, but rather iterate C# IStructuralComparable Kullanımı over all files existing in a certain directory, or items in certain DB, or other unmanaged resources. IEnumerable gönül step in and do it for you (you could also do it without IEnumerable, but IEnumerable "fits" conceptually, plus it gives you the benefit of being able to use the object produced in a foreach loop).

niteleyerek sorarsak eğer üst satırlarda bahsettiğimiz kabilinden o dershaneın geriye IEnumerator nesnesi dönen GetEnumerator adlı metodu çitndırıyor olması demekti. Ee haliyle IEnumerable interface’i ait sınıfa uygulanmış olduğunda GetEnumerator metodunu implement edecektir.

IEnumerable is an interface that defines one method GetEnumerator which returns an IEnumerator interface, this in turn allows readonly access to a collection. A collection that implements IEnumerable güç be used with a C# IStructuralComparable nerelerde kullanılıyor foreach statement.

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