Greatest Kılavuzu C# IList Kullanımı için

Greatest Kılavuzu C# IList Kullanımı için

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I toyed with writing an extension method, also with inheriting from IList and implementing my own Sort() method bey well as casting to a List but none of these seemed overly elegant.

Then the person calling the method is free to call it with any veri type that is enumerable. This allows your code to be used in unexpected, but perfectly valid ways.

Edit: You do need to be quick to get answers in here. Bey I presented a slightly different syntax to the other answers, I will leave my answer - however, the other answers presented are equally valid.

So when writing a function or method that takes a collection, write it not to take a List, but an IList, an ICollection, or IEnumerable. The generic interfaces will still work even for heterogenous lists because System.

Hatta fevkda anlattığımız IndexOf metodunu Temel liste üzerinden madun listelerdeki elemanlar midein kullanamazsınız. Anne liste üzerinden zir listelerin index sırasını bulabilirsiniz.

The speed difference is sufficiently great that in many cases it may be faster to copy a list to an array, sort the array, and copy the list back, than to try to have a sort routine process the list in place.

Bu kent, istenmeyenleri azaltmak yürekin Akismet kullanıyor. Değerlendirme verilerinizin nasıl fiillendiği için elan zait bili edinin.

Now I am returning IList for the simple fact that I will then add this to my domain C# IList Nedir paradigma what başmaklık a property like this:

If the parameter type is IList, then the caller has much more freedom, and hayat use classes you never heard about, which may hamiş even have existed when your code was written.

Then later if you decide to convert the actual data store from a List to a Dictionary and expose the dictionary keys C# IList Neden Kullanmalıyız as the actual value for the property (I have had to do exactly this before). Then consumers who have come to expect that their changes will be reflected inside of your class will no longer have that capability. That's a big sorun! If you expose the List kakım an IEnumerable you yaşama comfortably predict that your collection is not C# IList Nasıl Kullanılır being modified externally. That is one of the powers of exposing List as any of the C# IList Nedir above interfaces.

By asking for more than you need, you (1) make the caller do unnecessary work to satisfy your unnecessary demands, and (2) communicate falsehoods to the reader. Ask only for what you're going C# IList Nedir to use. That way if the caller başmaklık a sequence, they don't need to call ToList on it to satisfy your demand.

You might want to have an IOrderRepository that defines a collection of orders in either a IList or ICollection. You could then have different kinds of implementations to provide a list of orders kakım long as they conform to "rules" defined by your IList or ICollection.

This will help if you decide to change the implementation of your class later to use a different concrete class. In that case the users of your library won't need to update their code since the interface doesn't change.

This works, because only the outer list is created in the first place. You can then insert individual items that are compatible with IList: