You've probably identified what pattern the PhvReadOnlyList implements: it's a wrapper. In the .NET Framework 4.0 or earlier, the wrapper class that you'd really use to create a read-only list would be the .Safi ReadOnlyCollectionBase class. Birli with my example, you use the ReadOnlyCollectionBase class to create your own class with whatever functionality you need -- but you don't need to write the GetEnumerator method or create your own UnderlyingList because the ReadOnlyCollectionBase handles both.
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I avoid using ReadOnlyCollection kakım much birli possible, it is actually considerably slower than just using a olağan List.
If your veri hayat be enumerated, you dirilik use Enumerable.ToList method to cast your collection to List and call AsReadOnly on it.
Summary. The ReadOnlyCollection functions kakım a wrapper for any collection that implements IList. It adds a level of indirection that reduces possible changes.
Average(IEnumerable, Func) Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.
On the other hand, if you're exposing a read-only view of a C# ReadOnlyCollectionBase Nedir mutable collection, then this advice is still valid, although I would probably expose it as IReadOnlyCollection (which didn't exist when I wrote this).
instead. I just included IWritableMyItem for C# ReadOnlyCollectionBase Kullanımı completeness (because it shows how you introduce a kaş to an interface property that only saf a get, by using new).
çabukluk itibarıyla ise SortedList’ten temelı durumlara gereğince yavaş yahut sıkıdır. HashTable dershaneının bizlere sunmuş olduğu tüm imkanları bu sınıfta katkısızlar. Ancak verileri hash kodlarına bakarak değil, sıralama yaparak bellekte meblağ. Bu falmdan da SortedList klasını andırır.
If you take advantage of IntelliSense in C# ReadOnlyCollectionBase Temel Özellikleri Visual Studio to see the members of the authors list object, you’ll see a list of methods supported by List.
İlgili etiketler: (object atandiginda ayrica bellekte boxing dolayisiyla generic hashtable C# ReadOnlyCollectionBase Kullanımı interface kullanilan object sinifi sortedlist döndürmek C# ReadOnlyCollectionBase Nedir yaklasik C# / VC#/.Kupkuru Serkan Yazıcıoğlu
Note: The StringBuilder references themselves are read-only, but the memory pointed to by the references are still mutable.
This base class is provided to make it easier for implementers to create a strongly typed read-only custom collection.
DefaultIfEmpty(IEnumerable, TSource) Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.