5 Basit Teknikleri için C# IList Nedir

5 Basit Teknikleri için C# IList Nedir

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

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

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

If you think that interfaces are useful only for building over-sized, grandiose architectures and have no place in small shops, then I hope that the person sitting across from you in the interview isn't me.

Kemiksiz 4.6 (and it will likely be caught by the compiler). But there dirilik be more insidious cases, such bey passing a C# array as a IList. I am derece sure everyone is aware arrays implement IList, which means support for Add should hamiş be assumed.

In some code this güç be quite important and using concrete classes communicates your intent, your need for that specific class. An interface on the other hand says "I just need to call this takım of methods, no other contract implied."

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class Kisi string ad; string soyad; public string Ad get return ad; grup ad = value; C# IList Kullanımı public string Soyad get return soyad; set soyad = value;

And, if you don't even need everything in IList you emanet always use IEnumerable too. With modern compilers and processors, I don't think there is really any speed difference, so this is more just a matter of style.

It really comes down to the kind of functionality you need. I'd suggest using the List class in most cases. IList is best for when you need to make a custom C# IList Nedir array that could have some very specific rules that you'd like to encapsulate within a collection so you don't repeat yourself, but C# IList Kullanımı still want .Kupkuru to recognize it as a list.

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 C# IList Nasıl Kullanılır 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 C# IList Neden Kullanmalıyız interface without necessarily tying yourself to a specific implementation, especially if you have no control over who compiles against your code afterward.

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 bey long birli they conform to "rules" defined by your IList or ICollection.

In particular, IList lets you use the indexer, and add/remove items; things that IEnumerable don't let you do.

IEnumerable allows you to iterate through a collection. ICollection builds on this and also allows for adding and removing items. IList also allows for accessing and modifying them at a specific index. By exposing the one that you expect your consumer to work with, you are free to change your implementation. List happens to implement all three of those interfaces. If you expose your property as a List or even an IList when all you want your consumer to have is the ability to iterate through the collection. Then they could come to depend on the fact that they can modify the list.