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G-ite

Change-g-ite

Modifying constructor for g-ite structures.

Syntax

(change-g-ite x 
              [:test <test>] 
              [:then <then>] 
              [:else <else>])

This is an often useful alternative to make-g-ite.

We construct a new g-ite structure that is a copy of x, except that you can explicitly change some particular fields. Any fields you don't mention just keep their values from x.

Definition

This is an ordinary change- macro introduced by defprod.

Macro: change-g-ite

(defmacro change-g-ite (x &rest args)
  (std::change-aggregate 'g-ite
                         x args
                         '((:test . g-ite->test)
                           (:then . g-ite->then)
                           (:else . g-ite->else))
                         'change-g-ite
                         'nil))