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Value-array

Change-value-array

Modifying constructor for value-array structures.

Syntax

(change-value-array x 
                    [:elements <elements>])

This is an often useful alternative to make-value-array.

We construct a new value-array 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-value-array

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