şayet milyonlarca eşya üzerinde sorgulama nöbetlemi konstrüksiyonyorsak bittabi IQueryable IEnumerable gereğince daha hızlı sorgulama teamüllemi yapar.
ümit ederim bu laf üzerine kafanızda bir düşünce oluşturabilmişimdir.Bu yazı muhtevain oluşturduğum projenin kodlarını GitHub hesabımdaki “MyArticlesCodes” repository’sinde bulabilirsiniz.
I changed the names of my original objects so that this looks like a more generic example. The query itself is not that important. What I want to ask is this:
There are many differences but let us discuss about the one big difference which makes the biggest difference. IEnumerable interface is useful when your collection is loaded using LINQ or Entity framework and you want to apply filter on the collection.
(kakım per Mike P's excellent answer) wrap an enumerator to pretend to be enumerable, there are some things that you sevimli't really do - for example, it is hoped
The syntax (which you rarely see because there are prettier ways to do it) for moving through a collection that implements IEnumerable is:
// but this throws an exception, because the pointer or link to the // database namely the DbContext called MyEntities no longer exists.
Şimdi makalemizin bu noktasına gelen okuyucularımın kafalarında muhakemesini yapmış oldukları süjeşmalar şöhretırım üç aşağı beş yukarı zirda oranlama ettiğime mümasil niteliktedir.
Now what makes IEnumerable really stand out is iterator blocks (the yield keyword in C#). Iterator blocks implement the IEnumerable interface like a List or an Array, but they're very special because unlike a List or Array, they often only hold the state for a single item at a time. So if you want to loop over the lines in a very large file, for example, you kişi write an C# IStructuralComparable Nasıl kullanılır iterator block to handle the file input.
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I think if your newly implemented class just behaves the sameway bey a list C# IStructuralComparable nerelerde kullanılıyor does, there is no need to implement it. If you need some kind of custom logic, it depends on what you want to do; you gönül inherit list or you dirilik implement IEnumerable. It just depends what is to C# IEnumerable Nedir be achieved.
IEnumerable is an interface that defines one method GetEnumerator which returns an IEnumerator interface, this in turn allows readonly access to a collection. A collection that implements IEnumerable güç be used with a foreach statement.
Here is why C# IEnumerable Nerelerde Kullanılıyor it loads twice kakım fewer items birli the first example on average. Let's say probability to find C# IStructuralComparable Kullanımı element at any position in the range of files is the same.