C# ReadOnlyCollectionBase Kullanımı Ile ilgili detaylı notlar

C# ReadOnlyCollectionBase Kullanımı Ile ilgili detaylı notlar

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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 veri in a List, then you hayat use the List GetEnumerator method to retrieve an Enumerator object, which you emanet then return to the izlence using your class. Listing 1 saf 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?

foreach C# dilinin deyimi (for eachVisual Basic'te) numaralandırıcıların katışıkşıklığını gizler. Bu nedenle, numaralandırıcıyı aracısız çalışmak alegori kullanılması foreach önerilir.

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

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

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

On the other hand, if you're exposing a read-only view of a mutable collection, then this advice is still valid, although I would probably expose it kakım IReadOnlyCollection (which didn't exist when I wrote this).

It depends on how much you trust the calling code. If you're in complete control over everything that will ever call this member and you guarantee

çabukluk bakımından ise SortedList’ten bazı durumlara nazaran yavaş veya hızlıdır. HashTable derslikının bizlere sunmuş olduğu bütün imkanları bu sınıfta sağlar. Ancak verileri hash kodlarına göre değil, sıralama yaparak bellekte meblağ. Bu denetlememdan da SortedList derslikını andırır.

So when i have this piece of code what is the easiest or best way to make it a read only collection?

When you write a For…Each loop to use with a collection, the compiler checks the collection C# ReadOnlyCollectionBase Nerelerde Kullanılıyor class C# ReadOnlyCollectionBase Temel Özellikleri 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.

First, some definitions: A read-only collection is like a List C# ReadOnlyCollectionBase Temel Özellikleri in that it supports iterating through the items with a For…Each loop or retrieving an item in the collection by position.

Eamon NerbonneEamon Nerbonne 47.7k2020 gold badges102102 silver badges169169 bronze badges 1 So, I've actually got an open source library which C# ReadOnlyCollectionBase Nerelerde Kullanılıyor includes an IArray interface that I believe is mefkûre for precisely this purpose. See my updated answer for a bit more info.

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