Note that, if your API is only going to be used in foreach loops, etc, then you might want to consider just exposing IEnumerable instead.
C# CollectionBase dershaneı, özelleştirilebilir koleksiyonların oluşturulmasını esenlar ve bu sayede mukayyetm projelerinde esneklik ve baştan kullanılabilirlik esenlar.
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?
Güç a unique position be deduced if pieces are replaced by checkers (can see piece color but derece type)
Kupkuru 4.6 (and it will likely be caught by the compiler). But there güç be more insidious cases, such as passing a C# array kakım a IList. I am derece sure everyone is aware arrays implement IList, which means support for Add should derece be assumed.
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.
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If your methods form part of an interface, the methods will need to be defined using types available C# IList Nerelerde Kullanılıyor to that interface.
This example also tells you that there may be situations when you need to specify the implementation, derece the interface, in the argument list: In this example, whenever you require a particular access performance characteristic.
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By asking for more than C# IList Nasıl Kullanılır 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 C# IList Nerelerde Kullanılıyor demand.
Bu örnekte, Student isminde bir dershane ve StudentCollection adında CollectionBase klasından türeyen özel bir derme dershaneı 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 birli C# IList Nasıl Kullanılır required.
The other general reason for using interfaces is to expose the minimal amount of knowledge necessary to the user of C# IList Nerelerde Kullanılıyor an object. Consider the (contrived) case where I have a data object that implements IList.