This doesn't create a copy of list. ReadOnlyCollection doesn't copy the veri, it works directly on the supplied list. See documentation:
Define your own class which implements IEnumerator, takes an IList in the new constructor, has a read only default item property taking an index, and does not include any properties/methods that could otherwise allow your list to me manipulated.
-ArrayList: Dizinin benzeridir ancak sadece object tipinden verileri saklar. Dolayısıyla da gönderilen data object değilse boxing anlayışlemine bağımlı tutulur.
then sure, no harm will be done if you just return the collection directly. I generally try to be a bit more paranoid than that though.
Bu tür bir karşılaştırma, makale başlangıçlıklarının sıralamasının önemli evetğu durumlarda, strüktürel benzerliklerin veya değişiklıkların belirlenmesine yardımcı olabilir.
Average(IEnumerable, Func) Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.
If you're tolerant of some "noise" in your own encapsulated code then I would suggest wrapping a T[] array and exposing an IList which happens to be a ReadOnlyCollection:
Zımnında güç istenirse Array, az bellek yararlanmaı istenirse List tercih edilmelidir. şayet koleksiyona eklenicek tip belirli bileğilse ArrayList kullanılabilir. Lakin aynı maslahatlevi generic listemizde muhaliflayabilme yetisine sahiptir.
Dan TaoDan Tao 128k5656 C# ReadOnlyCollectionBase Temel Özellikleri gold badges308308 silver badges448448 bronze badges 4 I'd like to avoid noise in both callee and caller. Exposing a ReadOnlyCollection bey anything other than itself isn't necessary: after all, exposing it as an IList just gets confusing (where'd I get this IList from - C# ReadOnlyCollectionBase Nasıl Kullanılır can I modify it?), and any IList is exposable kakım ReadOnlyCollection so there's no loss of generality.
IDictionary tabanlı nesnelerin nasıl sıralama yaptığı ile müntesip şu kodu yazarak C# ReadOnlyCollectionBase Nerelerde Kullanılıyor bir sınav yaparsak:
However, the syntax is awkward. Adding an extension method sevimli simplify that syntax tremendously. Extension methods have at least three convenient features: The first is that they attach themselves to whatever classes you C# ReadOnlyCollectionBase Nasıl Kullanılır specify, automatically appearing in the IntelliSense dropdown lists for those objects; second, they're automatically passed whatever object they're called from as their first parameter; third, when C# ReadOnlyCollectionBase Nasıl Kullanılır an extension method is used with a generic class (for instance, List), the method automatically figures out the veri type of the generic parameter.
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).
End Sub And that's all you need to write. The class that's using your new read-only collection would be identical to the class that used my custom PhvReadOnlyList. In fact, if that's all you want, then you don't even need to create your own version of the ReadOnlyCollectionBase class -- the .
(There are plenty of other options for wrapping trivially - the birçok thing about Skip over Select/Where is that there's no delegate to execute pointlessly for each iteration.)