What are the compatibility rules for C# collection types?
An example of an AI chatbot conversation about C# collection types compatibility.
What are the compatibility rules for C# collection types?
In C#, collection types like arrays, lists, and dictionaries have specific compatibility rules. For instance, an array of a base class can hold objects of derived classes.
Can you give me an example of that?
Sure! If you have a base class Animal and a derived class Dog, you can create an array of Animal and assign Dog objects to it.
What about generics? Are there compatibility issues with them?
Yes, generics can introduce compatibility issues. For example, List<Animal> is not compatible with List<Dog>, even though Dog is an Animal.
How can I work around these compatibility issues?
You can use covariance and contravariance with interfaces or use base class references to handle different types.
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