Hakkında herşey C# ReadOnlyCollectionBase Nasıl Kullanılır

Hakkında herşey C# ReadOnlyCollectionBase Nasıl Kullanılır

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This doesn't create a copy of list. ReadOnlyCollection doesn't copy the data, it works directly on the supplied list. See documentation:

This class makes the underlying collection available through the InnerList property, which is intended for use only by classes that are derived directly from ReadOnlyCollectionBase. The derived class must ensure that its own users cannot modify the underlying collection.

Birey you arrange 25 whole numbers (derece necessarily all different) so that the sum of any three successive terms is even but the sum of all 25 is odd?

Objects everywhere), and it makes the construction wordier (yaşama't use .ToList or collection initializers). And it doesn't really communicate intent either: such a list suggests you could add/remove values, or change them: but that's not typical usage at all.

The main advantage of this comes in the fact that you can't add code to collections so whenever you have a native "collection" in your object mostra, you ALWAYS have non-OO support code spread throughout your project to access it.

-List: Heralde en müsmir olan C# ReadOnlyCollectionBase Kullanımı nedeniyle da en çok kullanılan seçkin derslikımızdır. ArrayList klasının generic versiyonudur.

Ancestors(IEnumerable) Returns a collection of elements that contains the ancestors of every node C# ReadOnlyCollectionBase Nasıl Kullanılır in the source collection.

ElementAtOrDefault(IEnumerable, Index) Returns the element at a specified index in a sequence or a default value if the index is out of range.

Dan TaoDan Tao 128k5656 gold badges308308 silver badges448448 bronze badges 4 I'd like to avoid noise in both callee and caller. Exposing a ReadOnlyCollection as anything other than C# ReadOnlyCollectionBase Temel Özellikleri itself isn't necessary: after all, exposing it birli an IList just gets confusing (where'd I get this IList from - hayat I modify it?), and any IList is exposable bey ReadOnlyCollection so there's no loss of generality.

Performans Optimizasyonu: IList, data erişimini optimize ederek uygulamanın performansını artırabilir ve dağarcık yönetimini iyileştirebilir.

SingleOrDefault(IEnumerable, Func, TSource) Returns the only element of a sequence that satisfies a specified condition, or a specified default value if no such element exists; this method throws an exception if more than one element satisfies the condition.

This answer already assumes you want to C# ReadOnlyCollectionBase Kullanımı return IEnumerable without any reasoning to support that decision.

ObservableCollection sevimli bind to ListViewCollection in such a way that changes to ListViewCollection do hamiş get pushed back into ObservableCollection. The original ReadOnlyObservableCollection, however, throws an exception if you try C# ReadOnlyCollectionBase Nerelerde Kullanılıyor to modify the collection.

This causes unnecessary boxing/unboxing of value types. One of the benefits of using generics is the avoidance of such boxing/unboxing which could have a detremintal effect on the performance of the collections.