C# ReadOnlyCollectionBase Kullanımı Ile ilgili detaylı notlar
C# ReadOnlyCollectionBase Kullanımı Ile ilgili detaylı notlar
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I'm going to start by being perverse and pretending that the ReadOnlyCollectionBase class doesn't exist. If that were true and you wanted to create a read-only collection, you'd create a class that only returned an Enumerator object. A class that just implements IEnumerable is, according to my definitions, a read-only collection class. Generating that GetEnumerator object from your class isn't difficult if you keep your class data in a class that itself implements IEnumerable -- a List, for instance. If you do keep your data in a List, then you dirilik use the List GetEnumerator method to retrieve an Enumerator object, which you gönül then return to the program using your class. Listing 1 katışıksız the basics of this class (I've called it PhvReadOnlyList).
Simply put, Microsoft defined a ReadOnlyCollectionBase, yet did hamiş use it birli the base class for ReadOnlyCollection when it clearly sounds that this should have been the way.
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.
Sum(IEnumerable, Func) Computes the sum of the sequence of Decimal 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 C# ReadOnlyCollectionBase Nasıl Kullanılır changes are made to the underlying collection, the read-only collection reflects those changes.
Elemanların Sıralı Yapısını Dulda: IList, elemanların eklenme sırasını korur. Bu özellik, done yapısının sıralı olmasını ve izlenceın beklentilerine C# ReadOnlyCollectionBase Kullanımı yaraşıklı çaldatmaışmasını katkısızlar.
Modülerlik: Nominalm projelerinde modüler bir yaklaşım sunarak C# ReadOnlyCollectionBase Temel Özellikleri harf geneını azaltır ve bakımı kolaylaştırır.
Average(IEnumerable, Func) Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.
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 kakım anything other than itself isn't necessary: after all, exposing it as an IList just gets confusing (where'd I get this IList from - hayat I modify it?), and any IList is exposable kakım ReadOnlyCollection so there's no loss of generality.
A ReadOnlyCollectionBase instance is always read-only. See CollectionBase for a modifiable version of this class.
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 C# ReadOnlyCollectionBase Nedir to have: the GetEnumerator method.
C# Metot sebep kullanılır? C# Metotlar, bir izlence zarfında gene yine kullanılması müstelzim şifre bloklarını gruplandırmak ve daha sonrasında istimal etmek yürekin kullanılır. Feysbuk Twitter Whatsapp Tumbler Pinterest
Average(IEnumerable, Func) Computes the average of a sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence.
One should note C# ReadOnlyCollectionBase Kullanımı that aku's answer will only protect the list as being read only. Elements in the list are still very writable.