C# IList Nedir Için Adım Haritaya göre Yeni Adım

C# IList Nedir Için Adım Haritaya göre Yeni Adım

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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.

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.

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, hamiş add or remove. Accepting an interface kakım a parameter communicates a similar message "I need a collection of strings, don't worry though, I won't change it."

Dirilik a unique position be deduced if pieces are replaced by checkers (hayat see piece color but hamiş type)

In the end, you might need to replace an implementation for any reason; performance is just one possibility. Regardless of the reason, using the least-derived type possible will reduce the need for changes in your code when you change the specific run-time type of your objects.

Yes, you may never change that data type from a List but you gönül be sure that if you have to. Your code C# IList Kullanımı is ready for it.

List implements IList, and so kişi be C# IList Kullanımı assigned to the variable. There are also other types that also implement IList.

IList is an Interface, not a C# IList Kullanımı class. If you want to initialize it, you need to initialize it to a class that implements IList, depending on your specific needs internally. Usually, IList is initialized with a List.

For example, let's say you have a Person class and a Group class. A Group instance saf many people, so a List here would make sense. When I declare the list object in Group I will use an IList and instantiate it birli a List.

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Of course that only need apply to methods that are externally visible (i.e. public methods). I personally use interfaces even in internal code, but birli you are C# IList Neden Kullanmalıyız able to change all the code yourself if you make breaking changes it's hamiş strictly necessary.

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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 as required.

additional advantage is that your code is safe from any changes to concrete class kakım you are C# IList Kullanımı subscribing to only few of the methods of concrete class and those are the ones that are going to be there bey long as the concrete class inherits from the interface you are using.