Greatest Kılavuzu C# IEnumerable Temel Özellikleri için

Greatest Kılavuzu C# IEnumerable Temel Özellikleri için

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[Edit] - Needless to say - it's hamiş "either this or that". often it would make good sense to use both a list and an IEnumerable in the same class. No computer in the world could list all prime numbers, because by definition this would require an infinite amount of memory. But you could easily think of a class PrimeContainer which contains an IEnumerable primes, which for obvious reasons also contains a SortedList _primes.

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

g. executing SQL on GarbageCollected contexts). I would say that ICollection is every thing you said apart from the "lazy evaluation" and we should be using that, especially if the veri has already been enumerated once!

Analogy: Imagine you are a detective on an aeroplane . You need to work your way through all the passengers to find your suspect.

This will create a new list element for each element in memory, enumerating the IEnumerable C# IEnumerable Nasıl Kullanılır and is thus less performant if you only enumerate once - but safer and sometimes the List methods are handy (for instance in random access).

The syntax (which you rarely see because there are C# IEnumerable Nerelerde Kullanılıyor prettier ways to do it) for moving through a collection that implements IEnumerable is:

C# IEnumerable yararlanmaı oldukça basittir ve alelumum koleksiyonlar üzerinde meselelemler yapmak muhtevain C# IEnumerable Nasıl Kullanılır yeğleme edilir. İşte girişim aşama nasıl kullanılacağına üzerine detaylı bir tafsil: Yeni bir dershane oluşturun: İlk olarak, IEnumerable arayüzünü istismar etmek bâtınin bir C# IEnumerable Nedir derme klası oluşturmalkaloriız. Örneğin, dundaki üzere bir derslik tanımlayabilirsiniz:

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Where the execution of a query is going to be performed "in process", typically all that's required is the code (kakım code) to execute each part of the query.

This works for read-only access to a collection that implements that IEnumerable gönül be used with a foreach statement.

Then with a IQueryable the generated SQL will contains “where name = “a”, but with a IEnumerable many more roles will be pulled back from the database, then the x.name = “a” check will be done by .Kemiksiz.

Yukarıdaki hatada Calisan C# IEnumerable Nerelerde Kullanılıyor klasının bir GetEnumerator karınermediğini belirtiyor. Yani buradan da şu çıihtiyarmı yapabiliriz;

C# dilinde, IEnumerator özellikle adidaki gibi koleksiyonlar üzerinde bilgi kıraat ve meselelemlerinde yeğleme edilir:

Below mentioned small sınav might help you understand one 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