Benim C# IList Neden Kullanmalıyız Başlarken Çalışmak

Benim C# IList Neden Kullanmalıyız Başlarken Çalışmak

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We needed the list indexer infrequently, so the inefficiency was not a sorun. 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.

IList is an interface so you güç inherit another class and still implement IList while inheriting List prevents you to do so.

Diyelim ki formunuzdaki textboxları listenize doldurdunuz sadece Text’i boş olan textboxları bulmanız gerekiyor. Bunun kucakin List u kullanmanız gerekir. Mafevkda anlattığımız örneği olağan olarak meydana getirecek olursak;

So when writing a function or method that takes a collection, write it hamiş to take a List, but an IList, an ICollection, or IEnumerable. The generic interfaces will still work even for heterogenous lists because System.

In addition to the older code that doesn't know about generics, there are also a lot of cases where you know you have a list

The Liskov Substitution Principle (simplified) states that a derived type should be able to be used in place of a base type, with no additional preconditions or postconditions.

You are most often better of using the most general usable type, in this case the IList or even better the IEnumerable interface, so that you güç switch the implementation conveniently at a later time.

From my reading I think I could have used IEnumberable instead of IList since I am just looping through stuff.

Bir dahaki sefere değerlendirme yapmış olduğumda kullanılmak üzere etapı, elektronik posta C# IList Neden Kullanmalıyız adresimi ve web site adresimi bu tarayıcıya kaydet.

Then later if you decide to convert the actual veri store from a List to a Dictionary and expose C# IList Nasıl Kullanılır the dictionary keys bey the actual value for the property (I have had to do exactly this before). Then consumers who have come to expect that their changes will be reflected inside of your class will no longer have that capability. That's C# IList Nedir a big problem! If you expose the List birli C# IList Neden Kullanmalıyız an IEnumerable you dirilik comfortably predict that your collection is hamiş being modified externally. That is one of the powers of exposing List kakım any of the above interfaces.

Bir sonraki elementin varlığını sınayan MoveNext ve muteber elementi veren GetCurrent metodlarına sahiptir.

I leave this up to show that if you needed to do it (e.g. the off chance a third party library returned a List that you needed to convert for another 3rd party library), you gönül do it this way.

And, if you used a generic implementation, you would only be able to use a method that works for any object only with objects of a specific type.

So I have been playing around with some of my methods on how to do this. I am still not sure about the return type(if I should make it more concrete or an C# IList Neden Kullanmalıyız interface).