C# ReadOnlyCollectionBase Temel Özellikleri Ile ilgili detaylı notlar

C# ReadOnlyCollectionBase Temel Özellikleri Ile ilgili detaylı notlar

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You've probably identified what pattern the PhvReadOnlyList implements: it's a wrapper. In the .Kupkuru Framework 4.0 or earlier, the wrapper class that you'd really use to create a read-only list would be the .Kemiksiz ReadOnlyCollectionBase class. Bey with my example, you use the ReadOnlyCollectionBase class to create your own class with whatever functionality you need -- but you don't need to write the GetEnumerator method or create your own UnderlyingList because the ReadOnlyCollectionBase handles both.

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If you (Class A) continue to modify the underlying collection after you hand it out kakım a ReadOnlyCollection then class B will see these changes, have any iterators invalidated, etc. and generally be open to any of the usual concurrency issues with collections.

Summary. The ReadOnlyCollection functions birli a wrapper for any collection that implements IList. It adds a level of indirection that reduces possible changes.

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

1. The reason for derece choosing ReadOnlyCollectionBase is simple - it isn't generic, while the aim of ReadOnlyCollection is to be generic. Thus it needs a much different inheritance tree.

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I've implemented AReadOnlyList C# ReadOnlyCollectionBase Nedir birli a read-only property because I'm 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

In short: I think your question is covered with a C# ReadOnlyCollectionBase Nasıl Kullanılır perfectly good answer by Jon Skeet - ReadOnlyCollection or IEnumerable for exposing member collections?

Nothing wrong with wordy types for major API's with small surfaces, but hamiş as a general practice inside a C# ReadOnlyCollectionBase Nasıl Kullanılır large codebase.

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

ObservableCollection dirilik bind to ListViewCollection in such a way that changes to C# ReadOnlyCollectionBase Nedir ListViewCollection do not get pushed back into ObservableCollection. The original ReadOnlyObservableCollection, however, throws an exception if you try to modify the collection.

(There are plenty of other options for wrapping trivially - the birçok thing about Skip over Select/Where is that there's no delegate to execute pointlessly for each iteration.)