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Discussion on: Universally quantified types in C#

shimmer profile image
Brian Berns Author

You’re on the right track with your idea to insert something that prevents the generic-ness of getWeight from bubbling up to SumWeights. However, it can be done safely, without going around the compiler’s type checker via dynamic.

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costinmanda profile image
Costin Manda

You can't pass a generic function as a parameter without having your own function be generic. Therefore you need to encapsulate it. Like in an interface. This would be the best design for your problem.

    interface IWeighter
    {
        int getWeight<T>(IList<T> list);
    }

But you want to pass a function as a parameter, so probably this ain't it. I have the feeling that whatever you're proposing will not sit well with me.

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shimmer profile image
Brian Berns Author

You got it. That interface is exactly what I'd suggest. You're still passing in the function, just with one level of indirection. It's a bit more verbose, but not too bad, I think. Nice work!