En iyi Tarafı C# ReadOnlyCollectionBase Temel Özellikleri
En iyi Tarafı C# ReadOnlyCollectionBase Temel Özellikleri
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Bu muamelat programın elan yavaş çallıkışmasına ve tipin objeye devirmesinden dolayı bellekte elan lüks mahal tutmasına sebep olur. Dolayısıyla ne kadar az boxing eşittir o denli mübarek yetişek.
read this question and don't want to read swathes of API docs yet still understand what the intent is. It's also really important to minimize code clutter - so things like ReadOnlyCollection are dubious at best.
-ArrayList: Dizinin benzeridir ancak yalnızca object tipinden verileri saklar. Nedeniyle da gönderilen done object bileğilse boxing mesleklemine yayımcı tutulur.
Birey you arrange 25 whole numbers (derece necessarily all different) so that the sum of any three successive terms is even but the sum of all 25 is odd?
The IReadOnlyDictionary interface provides a read-only view of a dictionary and represents a read-only collection of key/value pairs. The following code snippet illustrates how you güç define an IReadOnlyDictionary instance.
Suppose you need to return a list of all authors from the database bey shown in the code snippet given below.
A ReadOnlyCollection gönül support multiple readers concurrently, kakım long kakım the collection is hamiş modified. Even so, enumerating through a collection is intrinsically not a thread-safe procedure.
; but this question convinced me to go ahead and announce an open source project I've had in the works for a while (still a work in progress, but there's some useful stuff in there), which includes an IArray interface (and implementations, naturally) that I think captures exactly what you want here: an indexed, read-only, even covariant
So easy, in fact, that I don't need a full column to do it (and if that's all you want from this column, you kişi skip C# ReadOnlyCollectionBase Temel Özellikleri to the end where I discuss both the AsReadOnly method and using the ReadOnlyCollectionBase class). What this topic does give me is an excuse to talk about several things: C# ReadOnlyCollectionBase Temel Özellikleri how interfaces in .NET and the compiler work together; C# ReadOnlyCollectionBase Nedir how creating generic classes gives you flexibility; how you hayat exploit one of the built-in .NET interfaces; and (finally) how to simplify ugly syntax by building your own extension C# ReadOnlyCollectionBase Nedir methods. I also think that you don't really understand anything unless you kişi see a way to write it yourself, and this topic lets me do that, too, by showing how you gönül create the .Safi ReadOnlyCollectionBase class. So this column is as much about providing insight into how .Safi works kakım it is about doing something practical. Foundation Knowledge
A ReadOnlyCollectionBase instance is always read-only. See CollectionBase for a modifiable version of this class.
SingleOrDefault(IEnumerable, Func, TSource) Returns the only element of a sequence that satisfies a specified condition, or a specified default value if no such element exists; this method throws an exception if more than one element satisfies the condition.
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If however your intent is to prevent the calling code from observing updates from other threads you'll have to fall C# ReadOnlyCollectionBase Temel Özellikleri back to solutions already mentioned, to perform a deep or shallow copy depending on your need.