C# ReadOnlyCollectionBase Nerelerde Kullanılıyor - Genel Bakış

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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!).

 

I was thinking about creating a new class derived from ReadOnlyCollection (class ReadOnlyMyCollection : ReadOnlyCollection or class ReadOnlyMyCollection : ReadOnlyCollection) which returns the read-only wrapper class (ReadOnlyMyItem) through the square brackets operator, but either the square brackets operator is not marked bey virtual and the return type is derece even the same or the constructor doesn't have an IList of the wrapper class (IList) to use. Should I build the class (ReadOnlyMyCollection) from scratch?

If your data kişi be enumerated, you can use Enumerable.ToList method to cast your collection to List and call AsReadOnly on it.

The main advantage of this comes in the fact that you güç't add code to collections so whenever you have a native "collection" in your object benzer, you ALWAYS have non-OO support code spread throughout your project to access it.

Your implementation depends on your needs: - If you don't care about the caller (Class B) from C# ReadOnlyCollectionBase Nerelerde Kullanılıyor seeing any further changes to the collection then you yaşama just clone the collection, hand it out, and C# ReadOnlyCollectionBase Nedir stop caring. - If you definitely need the caller (Class B) to see changes that are made to the collection, and you want this to be thread-safe, then you have C# ReadOnlyCollectionBase Kullanımı more of a mesele on your hands.

A ReadOnlyCollection kişi support multiple readers concurrently, as long bey the collection is derece modified. Even so, enumerating through a collection is intrinsically derece a thread-safe procedure.

Sam Allen is passionate about C# ReadOnlyCollectionBase Nasıl Kullanılır computer languages. In the past, his work özgü been recommended by Apple and Microsoft and he has studied computers at a selective university in the United States.

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

IDictionary tabanlı nesnelerin nasıl sıralama yaptığı ile alakalı şu kodu yazarak bir test yaparsak:

SingleOrDefault(IEnumerable, Func, TSource) Returns the only element of a sequence that satisfies a specified condition, or a specified default value if no such element exists; this method throws an exception if more than one element satisfies the condition.

1 Gotta agree with DarkWanderer here. Collections should be just C# ReadOnlyCollectionBase Nasıl Kullanılır that: collections. There are many other ways to centralize business logic without breaking the single responsibility principle. Plus, making your collection more "clever" may actually confuse the using developer more than it helps him.

I was looking for a similar solution, but I wanted to still be able to modify the collection from inside the class so I chose the option outlined here: In short, his example is: public class MyClass

Is Légal’s reported “psychological trick” considered fair play or unacceptable conduct under FIDE rules?