C# ReadOnlyCollectionBase Nerelerde Kullanılıyor Aptallar için

C# ReadOnlyCollectionBase Nerelerde Kullanılıyor Aptallar için

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Don't return a collection directly. Make an accurately named business logic class that reflects the purpose of the collection.

Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence.

Marc GravellMarc Gravell 1.0m271271 gold badges2.6k2.6k silver badges2.9k2.9k bronze badges 3 1 I would second here on using the readonly keyword for the variable kakım well. Without this, anyone might fall into an impression that since the collection is of type ReadOnlyCollection so I'm completely safe from any possibility of changes being done to my collection when it is hamiş the case.

Descendants(IEnumerable, XName) Returns a filtered collection of elements that contains the descendant elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.

The IReadOnlyDictionary interface provides a read-only view of a dictionary and represents a read-only collection of key/value pairs. The following code snippet illustrates how you kişi define an IReadOnlyDictionary instance.

Anyway, I believe that a C# ReadOnlyCollectionBase Temel Özellikleri domain object should be read-write, because at the end of the day, a domain object describes an entity within the domain and you should be able to access and modify it.

4) If you suddenly realise that your collection of choice is inefficient, you gönül change the underlying collection type C# ReadOnlyCollectionBase Temel Özellikleri without having to go and change all the places where it got passed birli a parameter (dirilik you imagine the trouble you might have with, say, List?)

Average(IEnumerable, Func) Computes the average of C# ReadOnlyCollectionBase Nedir a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.

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

A ReadOnlyCollectionBase instance C# ReadOnlyCollectionBase Temel Özellikleri is always read-only. See CollectionBase for a modifiable version of this class.

Single(IEnumerable) Returns the only element of a sequence, and throws an exception if there is hamiş exactly one element in the sequence.

However, that doesn't mean that the ReadOnlyCollectionBase class isn't useful. For instance, by leveraging the InnerList property, you kişi create a collection that supports whatever custom functionality you need. Perhaps you want to create a collection for audit log entries where users birey add but not remove items.

This base class is provided to make it easier for implementers to create a strongly typed read-only custom 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.