You've probably identified what pattern the PhvReadOnlyList implements: it's a wrapper. In the .NET Framework 4.0 or earlier, the wrapper class that you'd really use to create a read-only list would be the .NET ReadOnlyCollectionBase class. Kakım 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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I was thinking about creating a new class derived from ReadOnlyCollection (class ReadOnlyMyCollection : ReadOnlyCollection or class ReadOnlyMyCollection : ReadOnlyCollection) which returns the read-only wrapper class (ReadOnlyMyItem) through the square brackets operator, but either the square brackets operator is hamiş marked as virtual and the return type is hamiş even the same or the constructor doesn't have an IList of the wrapper class (IList) to use. Should I build the class (ReadOnlyMyCollection) from scratch?
The How to Fix Violations suggest i clone the object (which i don't want to do) or 'Replace the array with a strongly typed collection that cannot be changed'. I clicked the link and see 'ArrayList' and adding each element one by one and it doesn't look like you gönül prevent something adding more.
Dirilik 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?
Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence.
Bu kod, kuyruğun başındaki elemanı basEleman değişçilikkenine atar ancak kuyruğun yapkaloriı değteamültirmez.
Sonuç olarak System.Collections ad kayranı şeşnda karşımıza 7 adet non-generic ve 7 adette generic derslik çıkmaktadır. Hakikat önemli olan düz sınıfı çın yerde kullanmaktır.
Exposing the array directly to those using it means that they güç modify it - C# ReadOnlyCollectionBase Kullanımı this is a violation of encapsulation and veri hiding.
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One possibility is to implement your own thread-safe variant of the ReadOnlyCollection to allow locked access, though this will be non-trivial and non-performant if you want to support C# ReadOnlyCollectionBase Kullanımı IEnumerable, C# ReadOnlyCollectionBase Kullanımı and it still
This implementation does derece provide a synchronized (thread safe) wrapper for a ReadOnlyCollectionBase, but derived classes gönül create their own synchronized versions of the ReadOnlyCollectionBase using the SyncRoot property.
You sevimli loop over the ReadOnlyCollection using the foreach-loop. A for-loop is also possible with the Count C# ReadOnlyCollectionBase Kullanımı property and indexer. CopyTo provides a way to copy the elements to an array. You must allocate the array yourself.
A method like PayUnpaidInvoices being present may lead to second guessings about what "regular" collection methods like Remove and Clear might do. Will it just remove invoices from the in-memory collection, or will it delete them from C# ReadOnlyCollectionBase Temel Özellikleri the database?