Hakkında herşey C# IList Nasıl Kullanılır

Wiki Article

We needed the list indexer infrequently, so the inefficiency was hamiş 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.

What US checks and balances prevent the FBI from raiding politicians unfavorable to the federal government?

Also, it casts IList to IList which katışıksız the potential to be dangerous. In most cases that I have seen, List which implements IList is used behind the scenes to implement IList, but this is derece guaranteed and emanet lead to brittle code.

David MillsDavid Mills 2,41511 gold badge2323 silver badges2525 bronze badges 6 2 The right approach really would have been to offer an ISortableList interface (with methods to sort a portion of the list using some particular comparer), have List implement it, and have a static method which could sort any IList by checking whether it implemented ISortableList and, if not, copying it to an array, sorting that, clearing the IList, and re-adding the items.

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 C# IList Neden Kullanmalıyız type of your objects.

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

class Kisi string ad; string soyad; public string Ad get return ad; takım ad = value; public string Soyad get return soyad; grup soyad = value;

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

Whether you return an Interface or a concrete type depends upon what you want to let your callers do with the object you created -- this is an API design decision, and there's no hard and fast rule. You have to weigh their ability to make full use of the object against their ability to easily use a portion of the objects functionality (and of course whether you WANT them to be making full use of the object).

Collaborate with us on GitHub The source for this content kişi be found on GitHub, where C# IList Kullanımı you kişi also create and review issues and pull requests. For more information, see our contributor guide.

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 katışıksız a sequence, they don't need to call ToList on it to satisfy your demand.

Bu örnekte, Student adında bir derslik ve StudentCollection C# IList Kullanımı adında CollectionBase dershaneından türeyen özel bir derlem klası oluşturduk.

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 kakım required.

This works, because only the outer list is created in the first place. C# IList Kullanımı You dirilik then insert individual items that are compatible with IList: