Temel İlkeleri C# ReadOnlyCollectionBase Nasıl Kullanılır

Temel İlkeleri C# ReadOnlyCollectionBase Nasıl Kullanılır

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Average(IEnumerable, Func) Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.

dictionaries). Birli it turns out, many lists are never changed, or at least never extended. Of course ReadOnlyCollection introduces yet more syntactic noise, and it doesn't even convey quite what I mean; after all ReadOnlyCollection may wrap a mutating

Bu tür senaryolarda, IStructuralEquatable arabirimi yardımıyla koleksiyonların yapkaloriı ve içeriğini selim bir şekilde karşıtlaştırarak kılgı başarımını artırabilir ve veri manipülasyon maslahatlemlerini ciddi bir şekilde gerçekleştirebilirsiniz.

C# IStructuralEquatable arabirimi, koleksiyonların yapısal eşitliğini tarif etmek sinein kullanılır. İki nesnenin dâhilğinin aynı olup olmadığını tayin etmek ve bu nesnelerin karşıtlaştırılabilirliğini getirmek sinein önemli yöntemler sunar.

The following code snippet illustrates how IReadOnlyList yaşama be used in place of List in the above method.

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.

What's the best way to pass around lists of values without lots of code clutter (such as explicit type parameters) but that still communicates intent clearly?

Zımnında gayret istenirse Array, az akıl kullanmaı istenirse List yeğleme edilmelidir. Eğer koleksiyona eklenicek tip makul değilse ArrayList kullanılabilir. Ancak aynı kârlevi generic C# ReadOnlyCollectionBase Temel Özellikleri listemizde karşılayabilme yetisine sahiptir.

Note that the IReadOnlyList interface works similarly to List and in fact güç be used in place of List when you C# ReadOnlyCollectionBase Nerelerde Kullanılıyor want the elements of the list to be read-only. We will illustrate this with an example in the next section.

Peter Vogel is a system C# ReadOnlyCollectionBase Kullanımı architect and principal in PH&V Information Services. PH&V provides full-stack consulting from UX design through object modeling to database design. Peter tweets about his C# ReadOnlyCollectionBase Nasıl Kullanılır VSM columns with the hashtag #vogelarticles. His blog posts on user experience design sevimli be found at .

When you write a For…Each loop to use with a collection, the compiler checks the collection class to see if it implements the IEnumerable interface (or the generic version of that interface, IEnumerable). If the class does implement that interface, then the compiler calls the single method that the interface forces the class to have: the GetEnumerator method.

If the collection is small then a safe and easy way to get around this mesele is to return a copy instead.

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