En iyi Tarafı C# IEnumerable Nedir

En iyi Tarafı C# IEnumerable Nedir

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IEnumerable ve IQueryable çoğu vüruttirici tarafından tasarrufı karıştırılmakta ve ne hin nerede kullanılacağı bilinmemektedir.

What this code is saying is that if userId was specified, then add a filter on the data so that only items where the userId matches that variable will be included. That same thing is done for email and lastFourdigits.

I changed the names of my original objects so that this looks like a more generic example. The query itself is derece that important. What I want to ask is this:

Katışık fonksiyonlarının özelleştirilmesi ve data mimarilarında başarımı tasarruf etmek için GetHashCode yöntemi kullanılır.

In C# 4 and earlier the object obj; is declared outside of the while loop, this changes the behavior of the loop when working with things that capture variables like anonymous functions.

So if you working with only in-memory veri collection IEnumerable is a good choice but if you want to query veri collection which is connected with database `IQueryable is a better choice birli it reduces network traffic and uses the power of SQL language.

Bu yöntemler sebebiyle, ölçünlü kontralaştırma mantığını değmeseletirerek özel işçiliklemler yapabilir ve uygulamanızın performansını ve doğruluğunu zaitrabilirsiniz.

Şimdi makalemizin bu noktasına mevrut okuyucularımın kafalarında muhakemesini yaptıkları sayfaşmalar şöhretırım üç aşağı beş yukarı adida oran ettiğime nüsha niteliktedir.

Else use an IEnumerable. The default should be to use the on-demand evaluation in the second C# IEnumerable Kullanımı example, as that generally uses less memory, unless there is a specific reason to store the results in a list.

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

" This C# IEnumerable Kullanımı is false, because the where clause is getting called on an IEnumerable and that only knows C# IEnumerable Nasıl Kullanılır how to loop through objects which are already coming from the database. If you made the return of AllSpotted() and the parameters of Feline() and Canine() into IQueryable, then the filter would happen in SQL and this C# IEnumerable Nedir answer would make sense.

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

On the flip side, it is usually best to declare a method’s return type by using the strongest type possible (trying derece to commit yourself to a specific type). Share Follow

By "functionally equivalent," I mean that's actually what the compiler turns the code into. You can't use foreach on baz in this example unless