En C# IEnumerable Nedir Sırları

En C# IEnumerable Nedir Sırları

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Eğer milyonlarca araç üzerinde sorgulama teamüllemi yapıyorsak nasıl IQueryable IEnumerable gereğince elan hızlı sorgulama alışverişlemi yapar.

are two properties in particular—one that points to a query provider (e.g., a LINQ to SQL provider) and another one pointing to a query expression representing the IQueryable object birli a runtime-traversable abstract syntax tree that yaşama be understood by the given query provider (for the most part, you güç't give a LINQ to SQL expression to a LINQ to Entities provider without an exception being thrown).

Genel olmayan bir derlem üzerinde mahdut bir yinelemeyi destekleyen bir numaralandırıcıyı kullanıma sunar.

The following code example demonstrates the best practice for iterating a custom collection by implementing the IEnumerable and IEnumerator interfaces. In this example, members of these interfaces are not explicitly called, but they are implemented to support the use of foreach (For Each in Visual Basic) to iterate through the collection.

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).

Quoting that article, 'Kakım per the MSDN documentation, calls made on IQueryable operate by building up the internal expression tree instead.

Şimdi bu ifadelerin elan boş olması muhtevain bir örnek üzerinden gidelim C# IEnumerable Nerelerde Kullanılıyor ve bir önceki makalemızda custom Enumerator sınıfı ile yazdığımız Alisveris Sepeti iterator örneği sınırırlayalım:

Şimdi makalemizin bu noktasına C# IEnumerable Nasıl Kullanılır gelen okuyucularımın kafalarında muhakemesini yapmış oldukları bahisşmalar sanırım üç aşağı beş yukarı süflida hesap ettiğime menent niteliktedir.

IEnumerable describes behavior, while List is an implementation of that behavior. When you use IEnumerable, you give the compiler a chance to defer work until later, possibly optimizing along the way. If you use ToList() you force the compiler to reify the C# IEnumerable Nasıl Kullanılır results right away.

There are pros and cons to both. If you call ToList, you may remove some mystery bey to when the query gets executed. If you stick to IEnumerable, you get the advantage that the program doesn't do any work until it's C# IEnumerable Temel Özellikleri actually required.

Here is a very good article that details the differences between statement lambdas and expression lambdas and discusses the concepts of expression tress in greater depth: Revisiting C# delegates, expression trees, and lambda statements vs. lambda expressions.."

Expression trees are a very important construct in C# and on the .NET ortam. (They are important in general, but C# makes them very useful.) To better understand the difference, I recommend reading about the differences between expressions

Bu interface, uygulandığı sınıfa GetEnumerator adlı bir metot kazandırır ve bu metot geriye IEnumerator interface’ini implement fail bir derslik döndürür.

Below mentioned small sınav might help you understand one C# IEnumerable Nerelerde Kullanılıyor aspect of difference between IQueryable and IEnumerable. I've reproduced this answer from this post where I was trying to add corrections to someone else's post