5 Basit Teknikleri için C# IList Kullanımı

5 Basit Teknikleri için C# IList Kullanımı

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Note that the IsReadOnly flag comes from ICollection, and indicates whether items sevimli be added or removed from the collection; but just to really confuse things, it does derece indicate whether they hayat be replaced, which in the case of Arrays (which return IsReadOnlys == true) dirilik be.

Maybe take it into a List of T rather than ArrayList, so that you get type safety and more options for how you implement the comparer.

Using IList instead of List makes writing unit tests significantly easier. It allows you to use a 'Mocking' library to pass and return data.

A List object allows you to create a list, add things to it, remove it, update it, index into it and etc. List is used whenever you just want a generic list where you specify object type in it and that's it.

Antrparantez yukarıda anlattığımız IndexOf metodunu Anne liste üzerinden zir listelerdeki elemanlar midein kullanamazsınız. Temel liste üzerinden zir listelerin index sırasını bulabilirsiniz.

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Object gönül be a T too. Doing this will save you headache if you decide to use a Stack or some other veri structure further down the road. If all you need to do in the function is foreach through C# IList Neden Kullanmalıyız it, IEnumerable is really all you should be asking for.

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

If you are exposing your class through a library that others will use, you generally want to expose it via interfaces rather than concrete implementations.

Then later if you decide to convert the actual veri store from a List to a Dictionary and expose the dictionary keys as the actual value for the property (I have had to do exactly this before). Then consumers C# IList Nasıl Kullanılır 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 sıkıntı! If you expose the List kakım an C# IList Kullanımı IEnumerable you sevimli comfortably predict that your collection is not being modified externally. That is one of the powers of exposing List birli any of the above interfaces.

If you're working within a single method (or even in a single class or assembly in some cases) and no one outside is going to see what you're doing, use the fullness of a List. But if you're interacting with outside code, like when you're returning a list from a method, then you only want to declare the interface without necessarily tying yourself to a specific implementation, especially if you have no C# IList Nerelerde Kullanılıyor control over who compiles against your code afterward.

List communicates "I need to get and set the elements of this sequence in arbitrary order and I only accept lists; I do hamiş accept arrays."

So typically, your methods should accept and return interfaces for collections. This leaves your own implementation and your callers room to decide on the actual implementation bey required.

If C# IList Neden Kullanmalıyız you had used IList in the rest of the app you could extend List with your own custom class and still be able to pass that around without refactoring.