C# IList Nedir Temel Açıklaması

C# IList Nedir Temel Açıklaması

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Note that, if your API is only going to be used in foreach loops, etc, then you might want to consider just exposing IEnumerable instead.

1 @supercat: What could ISortableList offer that's not already in IList? Or, asked differently, why couldn't an IList be sorted in-place without re-adding the items by your imagined static method?

Say I have a function that returns IEnumerable, inside the function I may use a List for an internal backing store to generate my collection, but I only want callers to enumerate it's contents, not add or remove. Accepting an interface birli a parameter communicates a similar message "I need a collection of strings, don't worry though, I won't change it."

Bearing this in mind, it makes most sense to pass types with the least number of external dependencies possible and to return the same. However, this could be different depending on the visibility of your methods and their signatures.

The preceeding line of code will work, but you will only have the members of IList available to you instead of the full seki from whatever class you initialize.

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use LINQ to perform the conversion of your existing List when you return it - but it would be better to C# IList Nasıl Kullanılır just create a more appropriate type to start with, birli shown above.

If your methods form part of an interface, the methods will need to be defined using types available to that interface.

Bir dahaki sefere değerlendirme yapmış olduğumda kullanılmak üzere adımı, elektronik posta C# IList Nedir adresimi ve web şehir adresimi bu tarayıcıya kaydet.

Then later if you decide to convert the actual data store from a List to a Dictionary and expose the dictionary keys bey the actual value for the property (I have had to do C# IList Nerelerde Kullanılıyor 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 mesele! If you expose the List bey an IEnumerable you can comfortably predict that your collection is hamiş being modified externally. That is one of the powers of exposing List kakım any of the 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 to use. That way if the caller saf a sequence, they don't need to call ToList on it to satisfy your demand.

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Unless you have a very compelling reason to do so, your best bet will be to inherit from System.Collections.ObjectModel.Collection since it has C# IList Neden Kullanmalıyız everything you need.

For instance, if you return an IEnumerable, then you are limiting them to iterating -- they birey't add or remove items from your object, they güç only act against the objects. If you need to expose a collection outside of C# IList Nasıl Kullanılır a class, but don't want to let the caller change the collection, this is one way of doing it. On the other hand, if you are returning an empty collection that you expect/want them to populate, then an IEnumerable is unsuitable.