It appears to only be primarily useful if you are writing a pure wrapper class where you proceed to delegate to an actual implementation. But you could still d

It appears to only be primarily useful if you are writing a pure wrapper class where you proceed to delegate to an actual implementation. But you could still do that and not be string-based. It could (and should!) be an enum of the operator instead. opBinary takes a fixed number of ops, but the parameter type of string has an infinite number of values. Whether or not the design of having a single operator overload method is a good idea or not is independent from what I'm specifically calling insane which is that the parameter type to that method is a string.