Use a delegate for the equality comparer for LINQ's Distinct()

Question

I have a LINQ Distinct() statement that uses my own custom comparer, like this:

class MyComparer : IEqualityComparer where T : MyType
{
            


        

Answer 1

Here is my perverse dirty little vanilla C# trick:

entities
    .GroupBy(e => e.Id)
    .Select(g => g.First())