Default for generic type?

Question

Is it possible to do something like

public class PriorityQueue<TValue, TPriority=int> where TPriority : IComparable

(note the =int) ?

Before you suggest it, yes, I know I can just add another line:

public class PriorityQueue<TValue> : PriorityQueue<TValue, int> { }

But I'm wondering if it's possible to do it as a param.

Answer 1

No. There is no option for default types on generic types in C#.

Your second example is often the "best" option available, if you need this behavior.

Answer 2

No it is not possible. If we know that TParameter is int then we don't need TParameter as a Generic type there.