[gambit-list] Implementation of equal? for recursive structures

Marc Feeley feeley at iro.umontreal.ca
Thu Sep 14 08:28:28 EDT 2017

> On Sep 14, 2017, at 4:15 AM, Dimitris Vyzovitis <vyzo at hackzen.org> wrote:
> Can we get an implementation of equal? that works for recursive structures per r7rs? 
> It doesn't need to be called equal?, it can be called equal-shared? for instance.

Yes that would be interesting to have.

> I have an initial implementation that works with shared structures, but there is an edge case:
> If there is a shared object in the structure (without recursion) it needs to be eq? to its counterpart.

Have you looked at how other implementations of Scheme do this?


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