Büyülenme Hakkında C# IEnumerable Temel Özellikleri

Büyülenme Hakkında C# IEnumerable Temel Özellikleri

Blog Article

, 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.

Bu dü arayüzün kullanım senaryoları değişikdır ve birbirlerinin alegori kullanılmamalıdır. Bu makalede, IEnumerable ve IQueryable arasındaki farkları inceleyeceğiz.

. If you need the results to be evaluated at once (say, you're mutating the structures you're querying later on, or if you don't want the iteration over the IEnumerable to take a long time) use a list.

IEqualityComparer kullanarak, özel gereksinimlere yaraşıklı done el işi stratejileri geliştirebilir ve uygulama genelinde tutarlılık sağlayabilirsiniz.

Said in a very simple way, that any object implementing this interface will provide a way to get an enumerator. An enumerator is used with the foreach kakım one example.

IEnumerator is a class that enumerates collections. A class that implements IEnumerable returns an IEnumerator. A class that implements IEnumerator katışıksız 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 C# IEnumerable Nasıl Kullanılır yetişek. Remember how LINQ doesn't generate the SQL to query the database until you enumerate it? Consider this:

the IEnumerable interface, so anything you sevimli do with a "plain" IEnumerable, you can also do with an IQueryable. IEnumerable just katışıksız a GetEnumerator() method C# IEnumerable Kullanımı that C# IEnumerable Nasıl Kullanılır returns an Enumerator for which you birey call its MoveNext() method to iterate through a sequence of T

Bu alanda yahut başka bir alanda, benim ve başka yardımcı insanların paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, benim hükmüm şeşna girmeniz anlamına gelmemektedir.

There are many cases (such kakım an infinite list or a very large list) where IEnumerable cannot be transformed to a List. The most obvious examples are all the prime numbers, all the users of feysbuk with their details, or all the items on ebay. The difference is that "List" objects are stored "right here and right now", whereas "IEnumerable" objects work "just one at a time".

Coming soon: Throughout 2024 we will be phasing out GitHub Issues as the feedback mechanism for content and replacing it with a new feedback system. For more information see: .

Important Some information relates to prerelease product that may C# IEnumerable Kullanımı be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

If the collection supports indexers, you could also iterate over it with the classic for loop method but the Iterator pattern provides some nice extras like the ability to add synchronization for threading.

In C# IEnumerable Kullanımı addition to all the answers posted above, here is my two cents. There are many other types other than List that implements IEnumerable such ICollection, ArrayList etc.