You dirilik argue that you may be able to downcast IPerson to Person, but at this point I would answer telling you that you need to follow your own coding conventions: if you defined that you never return Person but IPerson then I would do it this way in the entire code base, and if you need a write-capable Parents property, then you return Person instead (and you avoid a cast later!).
Is there any reason to expose an internal collection as a ReadOnlyCollection rather than an IEnumerable if the calling code only iterates over the collection?
foreach C# dilinin deyimi (for eachVisual Basic'te) numaralandırıcıların muhtelitşıklığını gizler. Bu nedenle, numaralandırıcıyı aracısız ika etmek alegori kullanılması foreach önerilir.
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.
This base class is provided to make it easier for implementers to create a generic read-only custom collection. Implementers are encouraged to extend this base class C# ReadOnlyCollectionBase Temel Özellikleri instead of creating their own.
Note The StringBuilder references themselves are read-only, but the memory pointed to by the references are still mutable.
Matthew WatsonMatthew Watson 108k1111 gold badges170170 silver badges290290 bronze badges 2 2 To avoid C# ReadOnlyCollectionBase Kullanımı that a client gets a writable object by downcasting, WritableMyItem (and IWritableMyItem if used) could be made private or internal.
Average(IEnumerable, Func) Computes the average of a sequence of nullable Int32 values that are obtained by invoking C# ReadOnlyCollectionBase Kullanımı a transform function on each element of C# ReadOnlyCollectionBase Nerelerde Kullanılıyor the input sequence.
C# IStructuralEquatable arabirimini uygulayıcı bir özel derlem sınıfı oluşturarak, nasıl yapısal müsavat denetçiü strüktürlacağını anlamak önemlidir. Dundaki örnek, bu konuyu elan bol anlamanıza yardımcı olacaktır:
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C# IStructuralEquatable, özellikle çeşitli done mimarilarının veya koleksiyonların hapishaneğinin konstrüktif olarak karşıtlaştırılması gereken durumlarda kullanılır. Bu durumlar ortada:
So, what's the best-practice way to deal with the bog-standard task of making small collections to pass around values? Should array be preferred over List where possible?
This base class is provided to make it easier for implementers to create a strongly typed read-only custom collection.
I don't know if there is any way of protecting non-atomic elements without cloning them before placing them in the read only list. Share Improve this answer Follow