opEquals for multiple types

[Wouter Verhelst]

Hi,

I'm trying to implement opEquals. I had originally done something like

class foo : bar {
      bool opEquals(bar e) {
           ... code here ...
      }
      bool opEquals(foo e) {
           ... somewhat more specialized code here ...
      }
}

(where bar is an interface)

but that gave me a message about how hiding Object.opEquals is
deprecated.

My next attempt was to add a

      bool opEquals(Object o)

which would then decide which opEquals function to call based on what
typeid() on the Object returns. But since I want to have a version
involving an interface, that's not going to fly.

What's the best way forward?

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the following formula:

pi zz a