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System

Change-system

Modifying constructor for system structures.

Syntax

(change-system x 
               [:definitions <definitions>] 
               [:constraints <constraints>])

This is an often useful alternative to make-system.

We construct a new system 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-system

(defmacro change-system (x &rest args)
  (std::change-aggregate 'system
                         x args
                         '((:definitions . system->definitions)
                           (:constraints . system->constraints))
                         'change-system
                         'nil))