En iyi Tarafı C# ReadOnlyCollectionBase Kullanımı
En iyi Tarafı C# ReadOnlyCollectionBase Kullanımı
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My code is littered with collections - hamiş an unusual thing, I suppose. However, usage of the various collection types isn't obvious nor trivial. Generally, I'd like to use the type that's exposes the "best" API, and has the least syntactic noise.
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-ArrayList: Dizinin benzeridir ancak sadece object tipinden verileri saklar. Dolayısıyla da gönderilen done object değilse boxing aksiyonlemine yayımcı tutulur.
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Now when you use IntelliSense to inspect IReadOnlyList, you’ll no longer see Add among the supported methods. Figure 2 below displays the members of the IReadOnlyList instance.
The single line of code required by my extension method just instantiates my PhvReadOnly class (using the datatype that the extension method katışıksız deduced), passing whatever IList object the extension method is being used on.
Çalışma zamanında yalnızca constructor içerisinde boy bos ataması yapılabilmektedir. Kontra halde salt okunur bir alana ölçü atanamaz uyarısı vermektedir. Readonly parametre teşhismı dundaki gibidir.
Kodunuzda aynı işçiliklemi çabucak ziyade defa kullanmanız gerekiyorsa, bu aksiyonlemi bir metot kucakine koyabilirsiniz ve tekrar gene aynı kodu yazmanız gerekmez. Bu sayede kodunuz elan az kompozitşık hale gelir ve daha zahmetsiz yönetilebilir.
SkipLast(IEnumerable, Int32) Returns a new enumerable collection that contains the elements from source with the last count elements of the source collection omitted.
A ReadOnlyCollectionBase instance is C# ReadOnlyCollectionBase Temel Özellikleri always read-only. See CollectionBase for a modifiable version of this class.
ICollection is such abstraction and you could say that ICollection does not have an exact corresponding peer in the generic world; IEnumerable is the closest.
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For maximum flexibility, my class doesn't specify the data type of the List in which it keeps its actual veri. Instead, I declare my UnderlyingList variable C# ReadOnlyCollectionBase Nasıl Kullanılır to use any class that implements the IList interface. I've also made this a generic class: Rather than specify what kind of List I'm working with, I've forced my class to be instantiated with a C# ReadOnlyCollectionBase Kullanımı data C# ReadOnlyCollectionBase Nedir type that the code refers to bey T. Wherever in my code I need to specify my List's data type, I just use the T reference. C# ReadOnlyCollectionBase Nedir Finally, I've chosen to have this class implement the generic version of IEnumerable, which requires two versions of the GetEnumerator method -- but the code is identical in both versions of the method. Listing 1. The basics of the PhvReadOnlyList class.
DefaultIfEmpty(IEnumerable, TSource) Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.