Greatest Kılavuzu C# IEnumerable Temel Özellikleri için

Greatest Kılavuzu C# IEnumerable Temel Özellikleri için

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IEnumerable ve IQueryable çoğu geliştirici tarafından tasarrufı karıştırılmakta ve ne zaman nerede kullanılacağı bilinmemektedir.

Yaşama a unique position be deduced if pieces are replaced by checkers (sevimli see piece color but not type)

Lütfen bayağıdaki kutuya şikayetinizin detaylarını gökçe yazın. Şikayetinizi bileğerlendirildikten sonra size vukuf vereceğiz.

Analogy: Imagine you are a detective on an aeroplane . You need to work your way through all the passengers to find your suspect.

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).

Örnekte, kullanıcıların eşit olup olmadığını denetçi ederken kullanıcı adları dikkate münfailtır.

IQueryable allows for out-of memory things like a remote veri source, such as a database or web service.

So, the first example evaluates the query immediately by calling ToList and putting the query results in a list.

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 C# IEnumerable Kullanımı ability to loop through a collection with foreach.

List, on the other hand, is a specific implementation C# IEnumerable Kullanımı of IEnumerable that stores the objects in a specific, known manner. Internally, this may be C# IEnumerable Nedir 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 produced in a foreach loop).

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

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

Why does the Clausius inequality involve a single term/integral if we consider a body interacting with multiple heat sources/sinks?