Best practice to create typed collections/lists with internal or private Add, Remove functionality? 2
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?
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C# IStructuralEquatable arabirimi, koleksiyonların yapısal eşitliğini tarif etmek dâhilin kullanılır. İki nesnenin derunğinin aynı olup olmadığını tayin etmek ve bu nesnelerin içinlaştırılabilirliğini çıkarmak sinein önemli yöntemler sunar.
Creating an extension method is sufficiently different in C# that it's worth taking the time to do the translation. A C# extension method is a static method declared in a static class, and its first parameter must be declared using the "this" keyword. So the C# version of this method looks like this: public static class PhvExtensionMethods
Let’s explore an example of using IReadOnlyList in place of List in order to make our list read-only. Consider the following class:
A ReadOnlyCollection birey support multiple readers concurrently, birli long kakım the collection is derece modified. Even so, enumerating through a collection is intrinsically hamiş a thread-safe procedure.
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Note that the IReadOnlyList interface works similarly to List and in fact hayat be used in place C# ReadOnlyCollectionBase Nedir of List when you want the elements of the list to be read-only. We will illustrate this with an example in the next section.
API Entegrasyonu: Dış API'lerden allıkınan verileri nakışlamak ve yönetmek midein kullanılabilir, bu da uygulamalar arası C# ReadOnlyCollectionBase Nedir veri alım satımini kolaylaştırır.
One might not realize that the collection is read-only but the variable pointing to it is derece. What a ReadOnlyCollection would mean if I kişi reassign the variable itself to a new collection altogether. +1.
So, what's the best-practice way to deal with the bog-standard task of making small collections to pass around values? Should array be preferred over List where possible?
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 to use any class that implements the IList interface. I've also made this a C# ReadOnlyCollectionBase Nedir generic class: Rather than specify what kind of List I'm working with, I've forced my class to be instantiated with a data type that the code refers to birli T. Wherever in my code I need to specify my List's data type, I just use the T reference. Finally, I've chosen to have this class implement the generic version of IEnumerable, which requires two versions of the C# ReadOnlyCollectionBase Nerelerde Kullanılıyor GetEnumerator method -- but the code is identical in both versions of the method. Listing 1. The basics of the PhvReadOnlyList class.
If however your intent is to prevent the calling code from observing updates from other C# ReadOnlyCollectionBase Nasıl Kullanılır threads you'll have to fall back to solutions already mentioned, to perform a deep or shallow copy depending on your need.