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Initializer

Change-initializer

Modifying constructor for initializer structures.

Syntax

(change-initializer x 
                    [:field <field>] 
                    [:value <value>])

This is an often useful alternative to make-initializer.

We construct a new initializer 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-initializer

(defmacro change-initializer (x &rest args)
  (std::change-aggregate 'initializer
                         x args
                         '((:field . initializer->field)
                           (:value . initializer->value))
                         'change-initializer
                         'nil))