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Re: loss of abstraction



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/