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I know I can call linq’s Except and specify a custom IEqualityComparer, but implementing a new Comparer class for each data type seems like an overkill for this purpose. Can I use a lambda expression to provide the equality function, like when I use Where or other LINQ functions?
If I can’t, is there an alternative?
I don’t think you can directly with the basic LINQ interfaces, but I’ve seen people implement a LambdaComparer class with extension methods which will help you do it.
Here’s an example