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Output-expression

Change-output-expression

Modifying constructor for output-expression structures.

Syntax

(change-output-expression x 
                          [:get <get>])

This is an often useful alternative to make-output-expression.

We construct a new output-expression 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-output-expression

(defmacro change-output-expression (x &rest args)
  (std::change-aggregate 'output-expression
                         x
                         args '((:get . output-expression->get))
                         'change-output-expression
                         'nil))