C# ReadOnlyCollectionBase Nerelerde Kullanılıyor - Genel Bakış

C# ReadOnlyCollectionBase Nerelerde Kullanılıyor - Genel Bakış

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My code is littered with collections - not 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 saf the least syntactic noise.

SingleOrDefault(IEnumerable, TSource) Returns the only element of a sequence, or a specified default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.

DescendantNodes(IEnumerable) Returns a collection of the descendant nodes of every document and element in the source collection.

Elements(IEnumerable) Returns a collection of the child elements of every element and document in the source collection.

A collection that is read-only is simply a collection with a wrapper that prevents modifying the collection; therefore, if changes are made to the underlying collection, the read-only collection reflects those changes.

Also, native collections kişi't be enhanced with extra veri. You'll recognize this next time you find that you pass in (Collection, Extra) to more than one or two methods. It indicates that "Extra" belongs with the object containing your collection.

Collections enable you to allocate memory dynamically to store elements and then retrieve them using a key or index bey needed.

In my example I exposed it all, but you don't have to do this. You yaşama make it read-only if you want, or validate additions to the list, prior to adding them.

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

When call the above code. The changes happening in the call ---1 is getting reflected the CategoryList and its affecting the call 2 . How C# ReadOnlyCollectionBase Nedir kişi I make the CategoryList bey ready Only and I am derece supposed to change the collection C# ReadOnlyCollectionBase Kullanımı inside the categoryList .But the collection is getting affected .

When you write a For…Each loop C# ReadOnlyCollectionBase Nerelerde Kullanılıyor to use with a collection, the compiler checks the collection class to see if it implements the IEnumerable interface (or the generic version of that interface, IEnumerable). If the class does implement that interface, then the compiler calls the single method that the interface forces the class to have: the GetEnumerator method.

Note: The StringBuilder references themselves are read-only, but the memory pointed to by the references are still mutable.

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If however your intent is to prevent the calling code from observing updates from other threads you'll have to fall back C# ReadOnlyCollectionBase Nedir to solutions already mentioned, to perform a deep or shallow copy depending on your need.