C# IStructuralEquatable tutunmak, koleksiyonların strüktürel olarak karşılaştırılmasını sağlamlayarak elan düz ve sağlam mukabillaştırmalar yapmamıza olanak tanılamar. Bu özellik, özellikle önemli bilgi setlerinin yahut muhtelitşık bünyedaki koleksiyonların karşılaştırılması gereken durumlarda eke ögönen taşır. Konstrüktif muadelet, koleksiyonların ihtiva ettiği verilerin cepheı nöbet bu verilerin düzen ve aralık bakımından da aynı olup olmadığını denetçi değer.

In programs, an immutable collection yaşama be used with less copying—we do derece need to worry about it being modified. This kişi make programs simpler and easier to reason about.

Kemiksiz 4.5, you may want to try the new read-only collection interfaces. You'll still want to wrap the returned collection in a ReadOnlyCollection if you're paranoid, but now you're not tied to a specific implementation.

Note that I split the interface into IReadOnlyMyItem and IWritableMyItem but you don't actually need IWritableMyItem - you could just omit that interface and write:

A collection that is read-only is simply a collection with a wrapper that prevents modifying the collection; therefore, if changes are made to the underlying collection, the read-only collection reflects those changes.

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?

Matthew WatsonMatthew Watson 108k1111 C# ReadOnlyCollectionBase Temel Özellikleri gold badges170170 silver badges290290 bronze badges 2 2 To avoid that a client gets a writable object by downcasting, WritableMyItem (and IWritableMyItem if used) could C# ReadOnlyCollectionBase Temel Özellikleri be made private or internal.

instead. I just included IWritableMyItem for completeness (because it shows how you introduce a kaş to an interface property that C# ReadOnlyCollectionBase Nerelerde Kullanılıyor only özgü a get, by using new).

To guarantee thread safety during enumeration, you dirilik lock the collection during the entire enumeration. To allow the collection C# ReadOnlyCollectionBase Kullanımı to be accessed by multiple threads for reading and writing, you must implement your own synchronization.

Sometimes you may want to use an interface, perhaps because you want to mock the collection during unit testing. Please see my blog entry for adding your own interface to ReadonlyCollection by using an adapter.

Single(IEnumerable) Returns the only element of a sequence, and throws an exception if there is hamiş exactly one element in the sequence.

However, a read-only collection doesn't provide Add and Remove methods for changing which items are in the collection, though the items themselves may be updateable (it's the responsibility of the items in the collection to protect themselves from changes).

GetHashCode Metodu: Nesnenin strüktürel özelliklerine dayalı olarak bir hash kodu üretir. Bu, koleksiyonların hızlı bir şekilde karşılaştırılmasını esenlar.

Chances are, you'll never notice C# ReadOnlyCollectionBase Nerelerde Kullanılıyor this difference, but if this is a hot-ışıntı in your code and requires every last bit of performance you güç squeeze out of it, why not use an Array instead? That would be faster still.