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Literal-null

Change-literal-null

Modifying constructor for literal-null structures.

Syntax

(change-literal-null x 
                     )

This is an often useful alternative to make-literal-null.

We construct a new literal-null 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-literal-null

(defmacro change-literal-null (x &rest args)
  (std::change-aggregate 'literal-null
                         x args 'nil
                         'change-literal-null
                         'nil))