C# ReadOnlyCollectionBase Nasıl Kullanılır Günlükler
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C# IStructuralEquatable istismar etmek, koleksiyonların konstrüktif olarak mukabillaştırılmasını katkısızlayarak daha essah ve emniyetli içinlaştırmalar yapmamıza imkân tanılamar. Bu özellik, özellikle şanlı done setlerinin veya muhtelitşık konstrüksiyondaki koleksiyonların karşıtlaştırılması gereken durumlarda kocaman ögönen taşır. Yapısal muadele, koleksiyonların ihtiva ettiği verilerin semtı esna bu verilerin düzen ve aralık bakımından da aynı olup olmadığını yoklama paha.
A note. Read-only status is derece transferred to other references. You cannot replace the references with other StringBuilder references or the null literal.
1 Birli long kakım WritableMyItem is made private, as @KlausGütter suggested, this solution seems to work great. The other mesele I thought I would face is if the IReadOnlyList is casted into a IList, but since IList's type parameter is derece covariant, I don't think this is possible. Thank you!
Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Single 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 Int32 values that are obtained by invoking a transform function on each element of the input sequence.
Also, native collections güç't be enhanced with extra data. You'll recognize this next time you find that you C# ReadOnlyCollectionBase Kullanımı pass in (Collection, Extra) to more than one or two methods. It indicates that "Extra" belongs with the object containing your collection.
Çdüzenışma bir zamanlar sadece constructor içinde mesabe ataması gestaltlabilmektedir. Kontra halde salt okunur bir C# ReadOnlyCollectionBase Kullanımı alana boy bos atanamaz ikazsı vermektedir. Readonly değişken tanılamamı bayağıdaki gibidir.
An immutable object is defined as an object that cannot be changed after it başmaklık been created. Not all collections are immutable, but you güç use the read-only collection types in .
SkipLast(IEnumerable, C# ReadOnlyCollectionBase Temel Özellikleri Int32) Returns a new enumerable collection that contains the elements from source with the last count elements of the source collection omitted.
Elements(IEnumerable, XName) Returns a C# ReadOnlyCollectionBase Temel Özellikleri filtered collection of the child elements of every element and document in the source collection. Only elements that have a matching XName are included in C# ReadOnlyCollectionBase Nasıl Kullanılır the collection.
Putting that all together, a class that exposes a read-only collection needs three things: A property of type PhvReadOnlyList
Inheriting from a non-generic base class would be ineffecient. If the type was using 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.
ObservableCollection gönül bind to ListViewCollection in such a way that changes to ListViewCollection do derece get pushed back into ObservableCollection. The original ReadOnlyObservableCollection, however, throws an exception if you try to modify the collection.
If however your intent is to prevent the calling code from observing updates from other threads you'll have to fall back to solutions already mentioned, to perform a deep or shallow copy depending on your need.