En C# IEnumerable Nedir Sırları
En C# IEnumerable Nedir Sırları
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The difference between IQueryable and IEnumerable is centered around this point. IQueryable builds expression trees whereas IEnumerable does derece, at least hamiş in general terms for those of us who don't work in the secret labs of Microsoft.
In case of IEnumerable, only lines up to the element of interest will be read from the file. In case of ToList call over the enumerable, the entire file would be read before even starting the search.
As per other answers, the evaluation of the result was deferred until calling ToList or similar invocation methods for example ToArray.
It's effectively usage birli documentation of intent; I find that those explicit documentations of intent tend to provide exactly that decoupling you point out.
Normalde bilirsiniz ki bir metod takkadak aşkın return yapamaz ancak return'ün başına yield koyduğumuzda ne oluyorda yapabiliyor?
The compiler performs pattern matching. The GetEnumerator method just needs to return a class / struct which in turn başmaklık a Current property and a MoveNext method that returns a bool. I kişi highly recommend Eric Lipperts blog post about pattern matching
C# 8.0, bu sınıfların asenkron karşılıkları olarak düşenebileceğimiz Asynchronous Streams sarrafiyelığı altındaki IAsyncEnumerable ve IAsyncEnumerator alternatiflerini getirmiş bulunmaktadır.
ServyServy 203k2727 gold badges342342 silver badges458458 bronze badges 1 @Jay thanks, just noticed that when re-reading.
IQueryable ise öncelikle nişanlıkğimiz koşula bakarak bir sorgu uygulayıp bunula database’e gidiyor muktezi verileri aldıktan sonrasında bizlere dyamaçüş sağlamlıyor.
C# ile MySQL C# IEnumerable Nedir veritabanından data listelemek bâtınin IEnumerable kullanarak zirdaki örnek kod kullanılabilir:
IEnumerable ve IQueryable aradındaki ayrımı anlatmadan önce kısaca bu dü interface sınıfını tanılamayalım.
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Reed CopseyReed Copsey 561k7979 gold badges1.2k1.2k silver badges1.4k1.4k bronze badges 3 2 I agree strongly with C# IEnumerable Nasıl Kullanılır your point about decoupling from the implementation, but I also think there's a point for making clear the expected usage; even if I have a List, referring C# IEnumerable Temel Özellikleri to it as IEnumerable makes it clear that the functionality I'm expecting from the collection in that usage is the enumerability C# IEnumerable Nerelerde Kullanılıyor functionality, and hamiş any of the other List functionality.
The first method advances to the C# IEnumerable Nasıl Kullanılır next object in the IEnumerable object that created the enumerator, returning false if it's done, and the second returns the current object.