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