En iyi Tarafı C# IEnumerable Nerelerde Kullanılıyor

En iyi Tarafı C# IEnumerable Nerelerde Kullanılıyor

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So if we have IEnumerable birli parameter of any method, we birey pass any collection types to the function. Ie we hayat have method to operate on abstraction not any specific implementation.

So when you have to simply iterate through the in-memory collection, use IEnumerable, if you need to do any manipulation with the collection like Dataset and other veri sources, use IQueryable

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

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

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

The compiler performs pattern matching. The GetEnumerator method just needs to return a class / struct which in turn özgü a Current property and a MoveNext method that returns a bool. I can highly recommend Eric Lipperts blog post about pattern C# IEnumerable Temel Özellikleri matching

While it might seem that only array types can make use of this construct, the truth of the matter is

Short story about a kamet living on a fake tropical island / paradise planet, who was actually an adult C# IEnumerable Nedir CEO but didn't remember it

Bu alanda yahut değişik bir alanda, benim ve öteki yardımcı insanoğluın paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, C# IEnumerable Kullanımı benim hükmüm şeşna girmeniz mazmunına gelmemektedir.

There are pros and cons to both. If you call ToList, you may remove some mystery as to C# IEnumerable Nerelerde Kullanılıyor when the query gets executed. If you stick to IEnumerable, you get the advantage that the program doesn't do any work until it's actually required.

Bu alanda veya ayrıksı bir alanda, benim ve öbür yardımcı insanoğluın paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, benim hükmüm altına girmeniz valörına gelmemektedir.

But if your class cannot act like a collection then provide a public C# IEnumerable Kullanımı IEnumerable property for its elements:

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 hayat be used with a foreach statement.

Here is why it loads twice kakım fewer items birli the first example on average. Let's say probability to find element at any position in the range of files is the same.