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Re: loss of abstraction

This page is part of the web mail archives of SRFI 72 from before July 7th, 2015. The new archives for SRFI 72 contain all messages, not just those from before July 7th, 2015.

Alan Watson <a.watson@xxxxxxxxxxxxxxxx> writes:

> [*] Distinguishing nulls is easy:

Any way of distinguishing nulls breaks the natural implementation of
eq? by just comparing machine words.

   __("<         Marcin Kowalczyk
   \__/       qrczak@xxxxxxxxxx
    ^^     http://qrnik.knm.org.pl/~qrczak/