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Comm-if

Change-comm-if

Modifying constructor for comm-if structures.

Syntax

(change-comm-if x 
                [:cond <cond>] 
                [:then <then>] 
                [:else <else>])

This is an often useful alternative to make-comm-if.

We construct a new comm-if 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 fty::defprod.

Macro: change-comm-if

(defmacro change-comm-if (x &rest args)
  (std::change-aggregate 'comm-if
                         x args
                         '((:cond . comm-if->cond)
                           (:then . comm-if->then)
                           (:else . comm-if->else))
                         'change-comm-if
                         'nil))