Bu işlem izlenceın henüz yavaş çkızılışmasına ve tipin objeye dönüşmesinden dolayı bellekte elan fazla mekân tutmasına saika olabilir. Dolayısıyla ne denli azca boxing eşittir o kadar mümbit yetişek.

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

. Why not return IEnumerable? Calling code would have to cast, which they are unlikely to do without knowing the internals of the property they are accessing.

If your veri yaşama be enumerated, you güç use Enumerable.ToList method to cast your collection to List and call AsReadOnly on it.

Imagine we have existing benzer with Organization => Employees already set up. To apply this technique, we need to change Organization biçim a bit:

Your implementation depends on your needs: - If you don't care about the caller (Class B) from seeing any further changes to the collection then you yaşama just clone the collection, hand it out, and 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 more of a sorun on your hands.

A ReadOnlyCollection birey support multiple readers concurrently, bey long bey the collection is hamiş modified. Even so, enumerating through a collection is intrinsically not a thread-safe procedure.

protected virtual ICollection EmployeesInternal get; private grup; = new List(); // this will expose collection contents to public, seemingly unneccessary `Skip` statement will prevent casting back to Collection

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.

Elements(IEnumerable, C# ReadOnlyCollectionBase Temel Özellikleri XName) Returns a filtered collection of the child elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.

Bu site zor olmuşdolaşma. Belgelik ammaçlı olarak BT AKADEMİ sponsorluğunda yapıt varlıkına devam etmektedir.

Average(IEnumerable, Func) Computes the average of a sequence of nullable Double values that C# ReadOnlyCollectionBase Nedir are obtained by invoking a transform function on each element of the input sequence.

1 Also, in the provided case, the best center of knowledge on whether the invoice kişi be paid C# ReadOnlyCollectionBase Nasıl Kullanılır is the invoice itself, so it must have a property CanBePaid - so, a bit of cleverness eliminates the need to change "in 4 places"

A method like PayUnpaidInvoices being present C# ReadOnlyCollectionBase Kullanımı may lead to second guessings about what "regular" collection methods like Remove and Clear might do. Will it just remove invoices from the in-memory collection, C# ReadOnlyCollectionBase Nedir or will it delete them from the database?