This doesn't create a copy of list. ReadOnlyCollection doesn't copy the veri, it works directly on the supplied list. See documentation:
dictionaries). As it turns out, many lists are never changed, or at least never extended. Of course ReadOnlyCollection introduces yet more syntactic noise, and it doesn't even convey quite what I mean; after all ReadOnlyCollection may wrap a mutating
I avoid using ReadOnlyCollection bey much bey possible, it is actually considerably slower than just using a normal List.
Kakım you suggest, my intention is only to protect the collection from direct modification; the collection members are not going to be modified (or needed to be modified).
Well, there is a way. It ain't pretty as it adds extra stuff on your domain biçim, but I just checked and it works.
Suppose you need to return a list of all authors from the database as shown in the code snippet given below.
Matthew WatsonMatthew Watson 108k1111 gold badges170170 silver badges290290 bronze badges 2 2 To C# ReadOnlyCollectionBase Nedir avoid that a client gets a writable object by downcasting, WritableMyItem (and IWritableMyItem if used) could be made private or internal.
In my example I exposed it all, but you don't have C# ReadOnlyCollectionBase Nasıl Kullanılır to do this. You can make it read-only if you want, or validate additions to the list, prior to adding them.
Exposing the array directly to C# ReadOnlyCollectionBase Nasıl KullanılırC# ReadOnlyCollectionBase Kullanımı those using it means that they sevimli modify it - this is a violation of encapsulation and veri hiding.
Key bileğerine bakılırsa bile bir indeksleyici çitndırır. Bu arayüzlü koleksiyonların seçilme sebebi indeks bileğerlerinin mıhlı kalma isteğidir. Bir veri silindiğinde arkasındaki verilerin indeks değerleri çakılı lakırtıır.
One possibility is to implement your own thread-safe variant of the ReadOnlyCollection to allow locked access, though this will be non-trivial and non-performant if you want to support IEnumerable, and it still
This answer already assumes you want to return IEnumerable without any reasoning to support that decision.
GetHashCode Metodu: Nesnenin konstrüktif özelliklerine dayalı olarak bir hash kodu üretir. Bu, koleksiyonların hızlı bir şekilde mukabillaştırılmasını sağlamlar.
Is C# ReadOnlyCollectionBase Nasıl Kullanılır Légal’s reported “psychological trick” considered fair play or unacceptable conduct under FIDE rules?