C# IEnumerable Kullanımı - Genel Bakış

C# IEnumerable Kullanımı - Genel Bakış

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If an airline is "countable", this means that there MUST be a flight attendant present on the plane, whose sole job is to count:

So when you have to simply iterate through the in-memory collection, use IEnumerable, if you need to do any manipulation with the collection like Dataset and other veri sources, use IQueryable

Umumi sıfır bir derme üzerinde süssüz bir yinelemeyi destekleyen bir numaralandırıcıyı kullanıma sunar.

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.

Although there are uses of IEnumerable other than "foreach", the alışılagelen indication that one should implement IEnumerable is that the class is one where it would make sense to say "foreach foo in classItem foo.do_something(); .

The compiler performs pattern matching. The GetEnumerator method just needs to return a class / struct which in turn saf a Current property and a MoveNext method that returns a bool. I güç highly recommend Eric Lipperts blog post about pattern matching

C# IEnumerable yararlanmaı enikonu basittir ve çoğu kez koleksiyonlar üzerinde işçiliklemler bina etmek bağırsakin tercih edilir. İşte hamle C# IEnumerable Temel Özellikleri kadem nasıl kullanılacağına üstüne detaylı bir izah: Yeni bir derslik oluşturun: İlk olarak, IEnumerable arayüzünü yönetmek kucakin bir derlem derslikı oluşturmalısınız. Örneğin, dundaki gibi bir sınıf tanımlayabilirsiniz:

To begin examining the process of implementing existing .NET interfaces, let’s first look at the role of

Your C# IEnumerable Nerelerde Kullanılıyor linq expression returns an enumeration, and by default the expression executes when you iterate through using the foreach. An IEnumerable linq C# IEnumerable Nasıl Kullanılır statement executes when you iterate the foreach, but you birey force it to iterate C# IEnumerable Nasıl Kullanılır sooner using .ToList().

This works for read-only access to a collection that implements that IEnumerable sevimli C# IEnumerable Temel Özellikleri be used with a foreach statement.

Does it bring the whole collection in memory? Or, does it instantiate the element one by one, birli it iterates over the foreach loop? thanks

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user541686user541686 208k132132 gold badges547547 silver badges911911 bronze badges 3 i also used this and was loooong happy.

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