5 Basit Teknikleri için C# IEnumerable Nerelerde Kullanılıyor

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

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.

This where filter is executed on the client side where the IEnumerable code is. In other words all the data is fetched from the database and then at the client its scans and gets the record with EmpId is 2.

Now List implements IEnumerable, but represents the entire collection in memory. If you have an IEnumerable and you call .ToList() you create a new list with the contents of the enumeration in memory.

System.Collections.IEnumerator. This interface provides the infrastructure to allow the caller to traverse the internal objects contained by the IEnumerable-compatible container:

Why do many philosophers consider a past-eternal universe to be self-explanatory but hamiş a universe that began with no cause?

So the difference between IQueryable and IEnumerable is C# IEnumerable Kullanımı about where the filter logic is executed. One executes on the client side and the other executes on the database.

IEnumerable and IEnumerator are C# IEnumerable Nerelerde Kullanılıyor both interfaces. IEnumerable has just one method called GetEnumerator. This method returns (birli all methods C# IEnumerable Nedir return something including void) another type which is an interface and that interface is IEnumerator. C# IEnumerable Kullanımı When you implement enumerator logic in any of your collection class, you implement IEnumerable (either generic or non generic).

Yield ile kendimiz named iteretor'ler oluşturabiliriz. Örneğin yetişekımızın 750TL den henüz pahalı ürünleri getirmesini istiyoruz:

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

IEnumerable ve IQueryable aradındaki nüansı anlatmadan önce kısaca bu dü interface sınıfını tanılamayalım.

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Önceki C#’ta IEnumerable C# IEnumerable Nasıl Kullanılır ve IEnumerator Interfaceleri Nedir? ve Nasıl Kullanılır? başlangıçlıklı makalemde IEnumerable ve IEnumerator interfaceleri üzerine uzun uzun mevzuşmuştuk. Bu yürekğimizde ise alakadar interfacelerin asenkron altyapıda şekillendirildiği C# 8.0 ile gelen yeni hallerini(IAsyncEnumerable ve IAsyncEnumerator) bahisşacağız. Şimdi yukarıda adresini verdiğim makalemizide referans alarak konuyu en temelden çizgiırlayarak ele alalım.

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