Detaylar, Kurgu ve C# ReadOnlyCollectionBase Temel Özellikleri

Detaylar, Kurgu ve C# ReadOnlyCollectionBase Temel Özellikleri

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What is the term for when a hyperlink maliciously opens different URL from URL displayed when hovered over?

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

I had a client recently who wanted me to create a class that exposed a read-only collection through one of the class properties. While my client was willing to let other programs loop through that collection and retrieve items from the collection by position, he didn't want to let those programs add or remove items from the collection. In the Microsoft .Kupkuru Framework 4.5 you güç use the read-only collections that Eric Vogel covered in an earlier C# Corner column, "The New Read-Only Collections in .Kemiksiz 4.5," to define that property. My client, however, was working with the .Kupkuru Framework 4 and didn't intend to upgrade. Fortunately, in earlier versions of .NET you güç also create a read-only class from an existing List just by calling your List's AsReadOnly method. However, if you need something special (a List that users sevimli add items to but hamiş remove items from), inheriting from the ReadOnlyCollectionBase class makes that very easy to do.

List's are a very common datastructure, C# ReadOnlyCollectionBase Nasıl Kullanılır but creating them in this fashion involves quite a bit of syntactic noise - and it sevimli easily get even worse (e.g.

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

C# ReadOnlyCollectionBase Provides the abstract base class for a strongly typed C# ReadOnlyCollectionBase Nedir non-generic C# ReadOnlyCollectionBase Nerelerde Kullanılıyor read-only collection.

Ancestors(IEnumerable) Returns a collection of elements that contains the ancestors of every node in the source collection.

protected virtual ICollection EmployeesInternal get; private kaş; = new List(); // this will expose collection contents to public, seemingly unneccessary `Skip` statement will prevent casting back to Collection

Any idea why IList doesn't inherit from ICollection? Since the latter is basically IEnumerable plus Count, and since IList already saf a Count method, having IList inherit ICollection wouldn't have required any more work for implementers, but would have allowed someone with an IList to know how many items to expect from an enumeration.

IDictionary tabanlı nesnelerin nasıl sıralama yaptığı ile müntesip şu kodu yazarak bir test yaparsak:

Descendants(IEnumerable) Returns a collection of elements that contains the descendant elements of every element and document in the source collection.

Inheriting from a non-generic base class would be ineffecient. If the type was using a non-generic base, all it would be would be a thin layer above the base collection, where the generic features would simply derive from casting from the underlying object instances of the base collection.

-HashTable ve Sorted List: Bu dü C# ReadOnlyCollectionBase Nasıl Kullanılır sınıfın çalışma prensipleri birbirine çok yakındır. Bir bölgede iki sayı veri barındırırlar. Bunlar ‘Key’ ve ‘Value’dur. Verdiğimiz ‘Key’ değeri unique geçmek ve null olmamak zorundadır. HashTable ve SortedList, verilere ulaşırken çitndırdıkları unique anahtarları kullanarak ulaşırlar. Böylelikle aldıkları verilere bir nevi Identity kolonuna ilgilamış olurlar. Key değerleri atandıktan sonrasında katiyen bileğmeselemez.

Gürlük: Kuyruk dokuması, verilerin sıralı olarak alışverişlenmesi müstelzim dayanıklı çok senaryoda kullanılır ve bu keyfiyet mukayyetmın başarımını artırabilir.