C# IList Kullanımı - Genel Bakış

We needed the list indexer infrequently, so the inefficiency was derece a mesele. 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.

Same principle as before, reversed. Offer the bare minimal that your caller requires. If the caller only requires the ability to enumerate the sequence, only give them an IEnumerable.

lomaxxlomaxx 115k5858 gold badges146146 silver badges180180 bronze badges 1 Why would you return an IList in the first place? From a WCF service?

Your functions above only care about being able to iterate over a list. Ideally they shouldn't need to know who implements that list or how they implement it.

Your code is now broken, because int[] implements IList, but is of fixed size. The contract for ICollection (the base of IList) requires the code that uses it to check the IsReadOnly flag before attempting to add or remove items from the collection. C# IList Kullanımı The contract for List does not.

Örneğin, adidaki kodda bir IAnimal tipinde bir değişebilir teşhismladım ve bu bileğfiilkene Dog ve Cat nesneleri atadım.

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

If C# IList Neden Kullanmalıyız the collection is indexed, the indexes of the elements that are moved are also updated. C# IList Nasıl Kullanılır This behavior does not apply to collections where elements are conceptually grouped into buckets, such bey a hash table.

This example also tells you that there may be situations when you need to specify the implementation, not the interface, in the argument list: In this example, whenever you require a particular access performance characteristic.

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Obviously if you are being asked which you use in an interview, you say IList, smile, and both look pleased at yourselves for being so clever. Or for a public facing API, IList. Hopefully you get my point.

Bu örnekte, Student adında bir klas ve StudentCollection adında CollectionBase derslikından türeyen özel bir derme sınıfı oluşturduk.

for your return types. This gives your callers the most flexibility in passing in types to your methods and the most opportunities to cast/reuse the return values.

There is a complication though that dynamic can't see explicit implementations, so something emanet implement IList and IList-of-T and yet still be completely unusable from dynamic.