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Modifying constructor for value-cons structures.
(change-value-cons x
[:car <car>]
[:cdr <cdr>])
This is an often useful alternative to make-value-cons.
We construct a new value-cons structure that is a copy of
This is an ordinary
Macro:
(defmacro change-value-cons (x &rest args) (std::change-aggregate 'value-cons x args '((:car . value-cons->car) (:cdr . value-cons->cdr)) 'change-value-cons 'nil))