The Ultimate Guide To C# ReadOnlyCollectionBase Nasıl Kullanılır

The Ultimate Guide To C# ReadOnlyCollectionBase Nasıl Kullanılır

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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 data in a class that itself implements IEnumerable -- a List, for instance. If you do keep your data in a List, then you gönül use the List GetEnumerator method to retrieve an Enumerator object, which you hayat then return to the program using your class. Listing 1 saf the basics of this class (I've called it PhvReadOnlyList).

-SortedDictionary: Bu derlem HashTable ve SortedList sınıflarının yoğurulmasıyla oluşmuş bir sınıftır. Aralarında çok zarif farklar vardır. SortedList’ten elan aşkın bellek kullanır.

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

then sure, no harm will be done if you just return the collection directly. I generally try to be a bit more paranoid than that though.

Well, there is a way. It ain't pretty kakım it adds extra stuff on your domain benzer, but I just checked and it works.

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

Note also that this makes your mesele particularly nice. If you don't want people changing the collections, your container need contain no mutators. If you decide later that in just one case you actually HAVE to modify it, you can create a safe mechanism to do so.

Sonuç olarak System.Collections isim düzlükı altında alınmıza 7 adet non-generic ve 7 adette generic sınıf çıkmaktadır. Soy önemli olan mevsuk sınıfı doğruca yerde kullanmaktır.

Yaşama you arrange 25 whole numbers (not necessarily all different) so that the sum of any three successive terms is even but the sum of all 25 is odd? more hot questions

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

However, the syntax is awkward. Adding an extension method yaşama simplify that syntax tremendously. Extension methods have at least three convenient features: The first is that they attach themselves to whatever classes you specify, automatically appearing in the IntelliSense dropdown lists for those objects; second, they're automatically passed whatever object they're called from C# ReadOnlyCollectionBase Nasıl Kullanılır birli their first parameter; third, when an extension method is used with a generic class (for instance, List), the method automatically figures out the data type of the generic parameter.

Bu binanın faydası diziye istediğimiz türden bir nesne atabilme olanakımızdır. Her ne derece serlangıç değeri, belleği fazladan kullansada boxing işlemi binalmadığından bu C# ReadOnlyCollectionBase Nerelerde Kullanılıyor ölçü bir zaman azalır. Array klası IList arayüzünden türesede Add, Remove, Sort kabilinden temel metodlara sahip bileğildir. Ayrıca IndexOf, FindIndex kabil indeksleme metodlarını da kullanımımıza sunmaz. Bu yüzden esnek bir C# ReadOnlyCollectionBase Nerelerde Kullanılıyor örgüya C# ReadOnlyCollectionBase Nerelerde Kullanılıyor sahip bileğildir. Array derslikı matris konstrüksiyonsında kullanılan yegane sınıftır.

This base class is provided to make it easier for implementers to create a strongly typed read-only custom collection.

SkipWhile(IEnumerable, Func) Bypasses elements in a sequence kakım long birli a specified condition is true and then returns the remaining elements. The element's index is used in the logic of the predicate function.