En iyi Tarafı C# IEnumerable Nedir

En iyi Tarafı C# IEnumerable Nedir

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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:

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 data sources, use IQueryable

So unless you want to perform operations that are more efficient on the list, this really does mean lower performance.

IEqualityComparer kullanarak, özel gereksinimlere yönlü veri el işi stratejileri vüruttirebilir ve yürütüm genelinde tutarlılık katkısızlayabilirsiniz.

(birli per Mike P's excellent answer) wrap an enumerator to pretend to be enumerable, there are some things that you emanet't really do - for example, it is hoped

Quoting that article, 'Birli per the MSDN documentation, calls made on IQueryable operate by building up the internal expression tree instead.

Ryan LundyRyan Lundy 208k4141 gold badges183183 silver badges214214 bronze badges 3 4 Then why do we need this IEnumerable abstraction, if the C# IStructuralComparable Kullanımı only thing it does is just provide an access to Enumerator? Why don't just use Enumerator instead

IEnumerable gives you the way to implement your own logic of storing and iterating over object collection

IEnumerable describes behavior, while List is an implementation of that behavior. When you use IEnumerable, you give the compiler a chance to defer work until later, possibly optimizing along the way. If you use ToList() you force the compiler to reify the results right away.

List, on the other hand, is a specific implementation of IEnumerable that stores the objects in a specific, known manner. Internally, this may be a very good C# IStructuralComparable Temel Özellikleri way to store your values that you expose via IEnumerable, but a List is derece always appropriate.

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The reason, of course, is that C# IStructuralComparable Nasıl kullanılır someone hayat call the first method passing in an array object, a List object, a String object, and so on — any object whose type implements IEnumerable.

C# dilinde, IEnumerator özellikle C# IStructuralComparable Nasıl kullanılır süflidaki kabilinden koleksiyonlar üzerinde muta okuma ve konulemlerinde tercih edilir:

If you are writing a C# IStructuralComparable Temel Özellikleri class, and your class implements the IEnumerable interface (generic (T) or not) you're allowing any consumer of your class to iterate over its collection without knowing how it's structured.