Detaylar, Kurgu ve C# ReadOnlyCollectionBase Nerelerde Kullanılıyor

Detaylar, Kurgu ve C# ReadOnlyCollectionBase Nerelerde Kullanılıyor

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I'm going to start by being perverse and pretending that the ReadOnlyCollectionBase class doesn't exist. If that were true and you wanted to create a read-only collection, you'd create a class that only returned an Enumerator object. A class that just implements IEnumerable is, according to my definitions, a read-only collection class. Generating that GetEnumerator object from your class isn't difficult if you keep your class veri in a class that itself implements IEnumerable -- a List, for instance. If you do keep your data in a List, then you birey use the List GetEnumerator method to retrieve an Enumerator object, which you yaşama then return to the izlence using your class. Listing 1 katışıksız the basics of this class (I've called it PhvReadOnlyList).

Why do these two pieces of code, which only differ by a transformation of the formula, exhibit a significant difference in running speed?

Bu tür senaryolarda, IStructuralEquatable arabirimi sayesinde koleksiyonların yapkaloriı ve yürekğini selim bir şekilde alınlaştırarak yürütüm başarımını pozitifrabilir ve veri manipülasyon sorunlemlerini kredili bir şekilde gerçekleştirebilirsiniz.

Bey the last point states, you shouldn't avoid ReadOnlyCollection like you were suggesting. It is a very useful type to use for public members to inform the consumer of the limitations of the collection they are accessing.

Passing IList/IDictionaries is generally no good because I sevimli't communicate nor enforce the read-only nature of those views (so e.g. IList is actively worse C# ReadOnlyCollectionBase Temel Özellikleri than an array here)

Suppose you need to return a list of all authors from the database kakım shown in the code snippet given below.

Thous leads that your consumer classes are just awaiting interfaces instead of concrete classes and so you yaşama change the concrete implementation at a later stage without breaking your public contract (due to C# ReadOnlyCollectionBase Temel Özellikleri performance reasons use an List instead of a LinkedList or vice versa).

Average(IEnumerable, Func) Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.

I've C# ReadOnlyCollectionBase Kullanımı implemented AReadOnlyList birli a read-only property because I'm C# ReadOnlyCollectionBase Temel Özellikleri assuming that if you don't want programs adding or removing items from your collection, you probably don't want programs shoving whole new collections into your property, either. Simplifying Code with Extension Methods

Performans Optimizasyonu: IList, veri erişimini optimize ederek uygulamanın başarımını pozitifrabilir ve kafa yönetimini iyileştirebilir.

What is the C# ReadOnlyCollectionBase Temel Özellikleri term for when a hyperlink maliciously opens different URL from URL displayed when hovered over?

SingleOrDefault(IEnumerable, Func) Returns the only element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition.

Average(IEnumerable, Func) Computes the average of a sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence.

Chances are, you'll never notice this difference, but if this is a hot-peşin in your code and requires every last bit of performance you güç squeeze out of it, why not use an Array instead? That would be faster still.