Açıklaması C# IList Nasıl Kullanılır Hakkında 5 Basit Tablolar

Açıklaması C# IList Nasıl Kullanılır Hakkında 5 Basit Tablolar

Blog Article

We needed the list indexer infrequently, so the inefficiency was hamiş a mesele. If it had been, we could have provided some other implementation of IList, perhaps birli 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?

Important Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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.

In this specific case since you're essentially talking about a language construct, hamiş a custom one it generally won't matter, but say for example that you found List didn't support something you needed.

In some code this dirilik 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 kaş of methods, no other contract implied."

The class name List may be changed in next .kemiksiz framework but the interface is never going to change as interface is contract.

Then when you need "add" or "sort" then use Collection if need more then use List. So my C# IList Nedir hard rule would be: START always with IENumarable and if you need more then extend...

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

List implements those ebe methods C# IList Neden Kullanmalıyız (derece including extension methods), on toparlak of that it başmaklık about 41 public methods, which weighs in your consideration of which C# IList Nasıl Kullanılır one to use in your application.

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.

The most important case for using interfaces over implementations is in the parameters to your API. If your API takes a List parameter, then anyone who uses it katışıksız to use List.

In collections of contiguous elements, such as lists, the elements that follow the insertion point move down to accommodate the new element.

For instance, if you return an IEnumerable, then you are limiting them to iterating -- they birey't add or remove items from your object, they can only act against the objects. If you need to expose a collection outside of a class, but don't want to let the caller change C# IList Neden Kullanmalıyız the collection, this is one way of doing it. On the other hand, if you are returning an empty collection that you expect/want them to populate, then an IEnumerable is unsuitable.