C#•3y ago

Cannot create comparer [Answered]

I'm trying to make a comparer to pass around but it's refusing to let me define it. Here's the code

Comparer<Card> trumpComparison = new Func<Card, Card, int>((card1, card2) => (card1.suite == trump ? 1 : 0) - (card2.suite == trump ? 1 : 0));

Comparer<Card> trumpComparison = new Func<Card, Card, int>((card1, card2) => (card1.suite == trump ? 1 : 0) - (card2.suite == trump ? 1 : 0));

Card in this case being

public readonly record struct Card(Suite suite, Rank rank);

public readonly record struct Card(Suite suite, Rank rank);

I've tried doing it as a lambda and it complained it wasn't a delegate. So instead I give it a func, and now it's telling me it cannot convert it to a comparer. What am I missing here?

3 Replies

reflectronic•3y ago

you need to do Comparer.Create(func)

LukeJOP•3y ago

Aaaaah, that makes sense. Thanks.

Accord•3y ago

✅ This post has been marked as answered!

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Cannot create comparer [Answered]