Bir İnceleme C# ReadOnlyCollectionBase Temel Özellikleri
Bir İnceleme C# ReadOnlyCollectionBase Temel Özellikleri
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Bu işlem programın elan yavaş çhileışmasına ve tipin objeye devirmesinden dolayı bellekte elan çokça yan tutmasına menşe evet. Nedeniyle ne derece az boxing eşittir o denli velut program.
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?
Marc GravellMarc Gravell 1.0m271271 gold badges2.6k2.6k silver badges2.9k2.9k bronze badges 3 1 I would second here on using the readonly keyword for the variable birli well. Without this, anyone might fall into an impression that since the collection is of type ReadOnlyCollection so I'm completely safe from any possibility of changes being done to my collection when it is hamiş the case.
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.
The main advantage of this comes in the fact that you can't add code to collections so whenever you have a native "collection" in your object model, you ALWAYS have non-OO support code spread throughout your project to access it.
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 güç just clone the collection, hand it out, and stop caring. - If you definitely need the caller (Class C# ReadOnlyCollectionBase Nerelerde Kullanılıyor B) to see changes that are made to the collection, and you want this to be thread-safe, then you have more of a sıkıntı on your hands.
Istifham 1: C# Metot nedir? C# Metot, makul bir çalışmalevi namına getiren şifre bloklarını yürekaziz kuruluşlardır. Metotlar, kodun tekrar kullanılabilirliğini fazlalıkrır ve kod C# ReadOnlyCollectionBase Nasıl Kullanılır katışıkşıklığını C# ReadOnlyCollectionBase Nasıl Kullanılır azaltır.
Average(IEnumerable, Func) Computes the average of a sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence.
It's derece a concrete type like ReadOnlyCollection, C# ReadOnlyCollectionBase Temel Özellikleri so it doesn't tie you down to a specific implementation.
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Nothing wrong with wordy types for major API's with small surfaces, but hamiş as a general practice inside a large codebase.
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On the other hand, let's say you have a ReadOnlyCollection(StringBuilder). This is kind of a strange thing to have, but it is acceptable. You emanet still change the individual StringBuilder objects by accessing their methods.
One should note that aku's answer will only protect the list as being read only. Elements in the list are still C# ReadOnlyCollectionBase Kullanımı very writable.