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Statement-return

Change-statement-return

Modifying constructor for statement-return structures.

Syntax

(change-statement-return x 
                         [:value <value>])

This is an often useful alternative to make-statement-return.

We construct a new statement-return 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-statement-return

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