Greatest Kılavuzu C# ReadOnlyCollectionBase Temel Özellikleri için

Greatest Kılavuzu C# ReadOnlyCollectionBase Temel Özellikleri için

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I do derece pass around Listss if I dirilik possibly help it. Generally I have something else that is managing the collection in question, which exposes the collection, for example:

Simply put, Microsoft defined a ReadOnlyCollectionBase, yet did hamiş use it kakım the base class for ReadOnlyCollection when it clearly sounds that this should have been the way.

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

Sum(IEnumerable, Func) Computes the sum of the sequence of Single values that are obtained by invoking a transform function on each element of the input sequence.

A collection that is read-only is simply a collection with a wrapper that prevents modifying the collection; therefore, if changes are made to the underlying collection, the read-only collection reflects those changes.

Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence.

Thous leads that your consumer classes are just awaiting interfaces instead of concrete classes and so you güç change the concrete implementation at a later stage without breaking your public contract (due to performance reasons use an List instead of a LinkedList or vice versa).

After hopefully understanding your question, i think you have to distinguish between what you create and manage within your class and what you make available to the outside world.

It's hamiş a concrete type like ReadOnlyCollection, so it doesn't tie you down to a specific implementation.

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ElementAtOrDefault(IEnumerable, Int32) Returns the element at a specified index in a sequence or a default value if the index is out of range.

Inheriting from a non-generic base class would be ineffecient. If the type was using C# ReadOnlyCollectionBase Nerelerde Kullanılıyor 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 collection.

End Sub And that's all you need C# ReadOnlyCollectionBase Nasıl Kullanılır to write. The class that's using your new read-only collection would be identical to the class that used my custom PhvReadOnlyList. In fact, if C# ReadOnlyCollectionBase Nerelerde Kullanılıyor that's all you want, then you don't C# ReadOnlyCollectionBase Temel Özellikleri even need to create your own version of the ReadOnlyCollectionBase class -- the .

Chances are, you'll never notice this difference, but if this is a hot-tanıtımcık in your code and requires every last bit of performance you sevimli squeeze out of it, why hamiş use an Array instead? That would be faster still.