Bir İnceleme C# ReadOnlyCollectionBase Temel Özellikleri

Bir İnceleme C# ReadOnlyCollectionBase Temel Özellikleri

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The collection used here is clearly mutable in nature. So how do you prevent this data from being changed?

Tip You sevimli loop over the ReadOnlyCollection using the foreach-loop. A for-loop is also possible with the Count property and indexer.

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Sum(IEnumerable, Func) Computes the sum of the sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.

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Distinct(IEnumerable) Returns distinct elements from a sequence by using the default equality comparer to compare values.

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

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Note that the IReadOnlyList interface works similarly to List and in fact emanet be used in place of List when you want the elements of C# ReadOnlyCollectionBase Nerelerde Kullanılıyor the list to be read-only. We will illustrate this with an example in the next section.

jasonjason 240k3535 gold badges431431 silver badges529529 bronze badges 2 Really, IEnumerable has the same issue as IList in principle, but implementing a single extra method (and a single extra property on the enumerator) was not considered a burden, compared to the dozens you would need for IList (which List and indeed ReadOnlyCollection do implement, separately from their generic collection interfaces)

When you write a For…Each loop to use with a collection, the compiler checks C# ReadOnlyCollectionBase Nedir the collection class to see if it C# ReadOnlyCollectionBase Nerelerde Kullanılıyor 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: C# ReadOnlyCollectionBase Nerelerde Kullanılıyor the GetEnumerator method.

Here’s where you yaşama take advantage of IReadOnlyList to ensure that the returned veri cannot be changed. By changing the return type of the GetAuthors method from List to IReadOnlyList C# ReadOnlyCollectionBase Temel Özellikleri we sevimli make our collection read-only.

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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 to solutions already mentioned, to perform a deep or shallow copy depending on your need.