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