Greatest Kılavuzu C# IEnumerable Nerelerde Kullanılıyor için

Greatest Kılavuzu C# IEnumerable Nerelerde Kullanılıyor için

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Botz3000Botz3000 39.4k88 gold badges106106 silver badges128128 bronze badges 1 I believe this is was not asked here so it emanet be a comment hamiş an answer, but anyway makes sense from refactoring standpoint

, so if you're doing complicated work to evaluate the enumerable as 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 not need to do the work at all.

. 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.

Consider that in your code example a new list created. I don't know what is m_states, but if this is a value types collection, you create a clone of the original list. In this way the returning list sevimli be manipulated form the caller Add/Remove/Update elements. without

The expression güç simply be a constant expression of the object itself or a more complex tree of a composed set of query operators and operands. The query provider's IQueryProvider.Execute() or IQueryProvider.CreateQuery() methods are called with an Expression

They usually have a GetXXX C# IEnumerable Nedir 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.

This is a nice videoteyp on youtube which demonstrates how these interfaces differ , worth a watch. C# IEnumerable Kullanımı Below goes a long descriptive answer for it.

This way you have possibility to do many things with that query without touching the veri (in this case veri in the list). List method C# IEnumerable Temel Özellikleri takes the prepared query and executes it against the source of data.

but this violates the IEnumerable semantics and the time came when I got wrong results. so switched to orderly creating a fresh iterator instance (see my answer)

I do have one C# IEnumerable Nedir question though. In the first example you C# IEnumerable Nedir loop over the array using foreach but then you cannot do it in the second example. Is this because the array is in a class or because it contains objects?

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Consider the below simple code which uses IEnumerable with entity framework. It’s using a Where filter to get records whose EmpId is 2.

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

IEnumerable interface’i ile bir klas itere edilebilir hale getiriliyor, bu muamelat içre GetEnumerator metodu sınıfa implement ediliyordu. IEnumerator interface’i ise iterasyon özelliği kazandıracak ve iterasyon emekleminde kullanılacak elemanları ve özellikleri çitndırmaktadır.