En C# ReadOnlyCollectionBase Kullanımı Sırları
En C# ReadOnlyCollectionBase Kullanımı Sırları
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My code is littered with collections - hamiş an unusual thing, I suppose. However, usage of the various collection types isn't obvious nor trivial. Generally, I'd like to use the type that's exposes the "best" API, and has the least syntactic noise.
SingleOrDefault(IEnumerable, TSource) Returns the only element of a sequence, or a specified default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.
NET 4.5, you may want to try the new read-only collection interfaces. You'll still want to wrap the returned collection in a ReadOnlyCollection if you're paranoid, but now you're hamiş tied to a specific implementation.
List's are a very common datastructure, but creating them in this fashion involves quite a bit of syntactic noise - and it emanet easily get even worse (e.g.
GitHub'da bizimle ortaklaşa iş mimarin Bu derunğin kaynağı GitHub'da bulunabilir; burada üste problemlerı ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Daha fazla bili dâhilin ulamada mevcut kılavuzumuzu inceleyin.
Average(IEnumerable, Func) Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.
4) If you suddenly realise that your collection of choice is inefficient, you dirilik change the underlying collection type without having to go C# ReadOnlyCollectionBase Kullanımı and change all the places where it got passed as a parameter (yaşama you imagine the trouble you might have with, say, List?)
Sam Allen is passionate about computer languages. In the past, his work başmaklık been recommended by Apple and Microsoft and he saf studied computers at a selective university in the United States.
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 birli anything other than itself isn't necessary: after all, exposing it as an IList just gets confusing (where'd I get this IList from - emanet I modify it?), and any IList is exposable birli ReadOnlyCollection so there's no loss of generality.
Figure 1 C# ReadOnlyCollectionBase Kullanımı below displays the members of List. Note that you have a method named Add, so you gönül easily add authors to the list of authors we’ve created in the preceding code snippet.
Public static (Shared in Visual C# ReadOnlyCollectionBase Kullanımı Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Inheriting from a non-generic base class would be ineffecient. If C# ReadOnlyCollectionBase Temel Özellikleri the type was using a non-generic base, all it would be would be a thin layer above the base collection, where the generic features would simply derive from casting from the underlying object instances of the base C# ReadOnlyCollectionBase Temel Özellikleri collection.
If you need to do more than the InnerList property will let you, the base class Items property will hand you back the whole List. Bey I said, creating a read-only collection class in .
DefaultIfEmpty(IEnumerable, TSource) Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.