C# ReadOnlyCollectionBase Nerelerde Kullanılıyor - Genel Bakış

C# ReadOnlyCollectionBase Nerelerde Kullanılıyor - Genel Bakış

Blog Article

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 veri in a List, then you dirilik use the List GetEnumerator method to retrieve an Enumerator object, which you emanet then return to the izlence using your class. Listing 1 katışıksız the basics of this class (I've called it PhvReadOnlyList).

Simply put, Microsoft defined a ReadOnlyCollectionBase, yet did hamiş use it as the base class for ReadOnlyCollection when it clearly sounds that this should have been the way.

1 As long kakım WritableMyItem is made private, kakım @KlausGütter suggested, this solution seems to work great. The other mesele I thought I would face is if the IReadOnlyList is casted into a IList, but since IList's type parameter is hamiş covariant, I don't think this is possible. Thank you!

Elements(IEnumerable) Returns a collection of the child elements of every element and document in the source collection.

I currently have return data; wrapped by a ReaderWriterLockSlim to protect the collection from sharing violations.

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

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 birli IReadOnlyCollection C# ReadOnlyCollectionBase Kullanımı (which didn't exist when I wrote this).

dip not: BitArray ve LinkedList sınıflarının tasarruf amacı farklı evetğundan teste bağımlı tutmaya icap görmedim.

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

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

C# IStructuralEquatable, özellikle çeşitli muta mimarilarının yahut koleksiyonların gönülğinin strüktürel olarak muhaliflaştırılması müstelzim durumlarda kullanılır. Bu durumlar ortada:

If the collection is small then a safe and easy C# ReadOnlyCollectionBase Temel Özellikleri way to get around this problem is to return a copy instead.

Important Some information relates to prerelease product that may be substantially modified before it’s C# ReadOnlyCollectionBase Kullanımı released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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