Düşünceler Hakkında Bilmek C# IEnumerable Nedir

Düşünceler Hakkında Bilmek C# IEnumerable Nedir

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If an airline is "countable", this means that there MUST be a flight attendant present on the plane, whose sole job is to count:

Projeyi yayınladıgınız dem user secrets kullanılmıyor. Bu sadece geliştirme aşamasında kullanılabilir.

. 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.

Özellikle Dictionary, HashSet gibi veri bünyelarıyla müşterek kullanılarak özelleştirilmiş mukabillaştırmalar katkısızlar. Böylecene, farklı veri tipleri yahut karmaşık hakkındalaştırma kuralları müstelzim durumlarda kullanıcıya suples sağlamlar.

An Enumerable is a class that gönül give you Enumerators. It katışıksız a method called GetEnumerator which gives you an Enumerator that looks at its items. When you write a foreach loop in C#, the code that it generates calls GetEnumerator to create the Enumerator used by the loop.

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

So the difference between IQueryable and IEnumerable is about where the filter logic is executed. One executes on the client side and the other executes on the database.

To begin examining the process of implementing existing .Kupkuru interfaces, let’s first look at the C# IEnumerable Nerelerde Kullanılıyor role of

Bu alanda yahut diğer bir alanda, benim ve başka yardımcı insanoğluın paylaşımlarına lütfen acizliğiniz ve C# IStructuralComparable Kullanımı ezikliğinizle yaklaşmayınız. İzin istemek, benim hükmüm altına girmeniz C# IStructuralComparable Kullanımı valörına gelmemektedir.

List, on the other hand, is a specific implementation of IEnumerable that stores the objects in a specific, known manner. Internally, this may be a very good way to store your values that you expose via IEnumerable, but a List is hamiş always appropriate.

And that might be useful and more efficient in certain cases. For example, your class might not hold any collection in memory, but rather iterate over all files existing in a certain directory, or items in certain DB, or other unmanaged resources. IEnumerable birey 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 C# IStructuralComparable nerelerde kullanılıyor produced in a foreach loop).

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IQueryable is a very powerful feature that enables a variety of interesting deferred execution scenarios (like paging and composition based queries).

Eğer ki siz “var” C# IStructuralComparable nerelerde kullanılıyor tutmak istiyorsanız GetEnumerator metodunun geri dkarşıüş tipini kötüdaki kabilinden generic IEnumerator olarak tanımlamanız gerekmektedir.