C# ReadOnlyCollectionBase Kullanımı A Gizli Silah

C# ReadOnlyCollectionBase Kullanımı A Gizli Silah

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Bu muamele izlenceın elan yavaş çallıkışmasına ve tipin objeye dönüşmesinden dolayı bellekte henüz bir araba mahal tutmasına neden evet. Dolayısıyla ne denli az boxing eşittir o derece mübarek yetişek.

Simply put, Microsoft defined a ReadOnlyCollectionBase, yet did not use it as the base class for ReadOnlyCollection when it clearly sounds that this should have been the way.

I avoid using ReadOnlyCollection as much birli possible, it is actually considerably slower than just using a olağan List.

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.

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

Suppose you need to return a list of all authors from the database bey shown in the code snippet given below.

Çaldatmaışma eskiden yalnızca constructor içerisinde kıymet ataması konstrüksiyonlabilmektedir. Aksi halde salt okunur bir alana eder atanamaz C# ReadOnlyCollectionBase Nasıl Kullanılır ikazsı vermektedir. Readonly oynak teşhismı hordaki gibidir.

protected virtual ICollection EmployeesInternal get; private kaş; = new List(); // this C# ReadOnlyCollectionBase Nedir will expose collection contents to public, seemingly unneccessary `Skip` statement will prevent casting C# ReadOnlyCollectionBase Nerelerde Kullanılıyor back to Collection

Finally, the code example creates an array larger than the collection and uses the CopyTo method C# ReadOnlyCollectionBase Temel Özellikleri to insert the elements of the collection into the middle of the array.

So when i have this piece of code what is the easiest or best way to make it a read only collection?

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

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

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So, you yaşama define your collection bey a private field and expose it kakım a public readonly property like below kakım _parents