Temel İlkeleri C# IList Nasıl Kullanılır

Temel İlkeleri C# IList Nasıl Kullanılır

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We needed the list indexer infrequently, so the inefficiency was not a sıkıntı. If it had been, we could have provided some other implementation of IList, perhaps as a collection of small-enough arrays, that would have been more efficiently indexable while also avoiding large objects.

Today, you almost always use IList, the primary reason for IList to still be around is for reasons of backwards compatibility.

If someone passes you an Array or a List, your code will work fine if you check the flag every time and have a fallback... But really; who does that?

Then click on the bulb symbol or place the cursor on the IList and press Strg + "." You will become several implementations offered, like:

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.

so its safety for you and freedom to the coder who is writing concrete implementation to change or add more functionality to his concrete class.

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

If the collection is indexed, the indexes of the elements that are moved are also updated. This behavior does derece apply to collections where elements are conceptually grouped into buckets, such kakım a hash table.

the method, it birey make a huge difference -- if they have an array and you're asking for a list, they C# IList Nasıl Kullanılır have to change the array to a list or v.v. whenever calling the method, a total waste of time from both a programmer and performance POV.

If you can consider your method, determine that you probably C# IList Nasıl Kullanılır won't be changing the return collection type, then it is probably safe to return a more exact C# IList Nedir type. If you aren't sure, or are afraid that if you change it in future you'll be breaking other people's code, then go more general.

private List _numbers; // callers can add/update/remove elements, but cannot C# IList Nasıl Kullanılır reassign a new list to this property

Bu örnekte, Student adında bir klas ve StudentCollection adında CollectionBase derslikından türeyen özel bir koleksiyon dershaneı oluşturduk.

Özel koleksiyonlar oluşturmanıza olanak tanılamar: ölçün derlem sınıfları gereksinimlerinizı içinlamıyorsa, kendi özel koleksiyonlarınızı C# CollectionBase kullanarak oluşturabilirsiniz. Bu, done binalarınızı istediğiniz şekilde özelleştirmenizi esenlar.

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