Greatest Kılavuzu C# IEnumerable Nerelerde Kullanılıyor için

Greatest Kılavuzu C# IEnumerable Nerelerde Kullanılıyor için

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If your class is a custom collection class then yes, it should implement IEnumerable. In this case a public property for the inner list would be redundant. Imagine a simple class:

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Different implementations of collections hayat be enumerable; using IEnumerable makes it clear that what you're interested in is the enumerability, and not the structure of the underlying implementation of the collection.

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.

I have writen about custom IEnumerator. Whats the simplest way to make IEnumerable from it ? ülkü solution (one line of code) would be if there was some class for that purpose. Or do I have to create my own ?

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Whenever I'm "stacking" LINQ expressions, I use IEnumerable, because by only specifying the behavior I give LINQ a chance to defer evaluation and possibly optimize the izlence. Remember how LINQ doesn't generate the SQL to query C# IStructuralComparable Kullanımı the database until you enumerate it? Consider this:

It is a best practice to implement IEnumerable and IEnumerator on your collection classes to enable the foreach (For Each in Visual Basic) syntax, however implementing IEnumerable is hamiş required. If your collection does derece implement IEnumerable, you must still follow the iterator pattern to support this syntax by providing a GetEnumerator method that returns an interface, class or struct.

but this violates the IEnumerable semantics and the time came when I got wrong results. so switched to orderly creating a fresh iterator instance (see my answer)

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

Oh sure, you gönül use it to create your own custom collection types. But for everyday stuff, it probably isn't bey useful birli the collections derived from it.

Generally, don't worry about what's actually in the IEnumerables, as it will be completely different from your actual code. Only worry about the actual output when you iterate C# IStructuralComparable Nasıl kullanılır over it :)

RastoRasto 17.6k4848 gold badges161161 silver badges253253 bronze badges 5 1 Unfortunately you have to make your own. The most conservative approach would be for you to cache all the items inside C# IStructuralComparable nerelerde kullanılıyor your new enumerable, to handle enumerators that kişi only be enumerated once, so there is no general class for this in the runtime.

Buraya kadar ele almış C# IStructuralComparable Nasıl kullanılır olduğumız bütün yapılanma kendi sınıflarımıza iterasyonel bir özellik vermek için kullandığımız materyallerdir.