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