[racket] feedback on migrating to immutable pairs?

From: Neil Van Dyke (neil at neilvandyke.org)
Date: Sun Jun 13 03:04:26 EDT 2010

Noel Welsh wrote at 06/13/2010 02:59 AM:
> Neither is a subtype of the other.

So having "pair" be an abstract supertype was not considered a good idea?


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