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Expr-string

Change-expr-string

Modifying constructor for expr-string structures.

Syntax

(change-expr-string x 
                    [:strings <strings>] 
                    [:info <info>])

This is an often useful alternative to make-expr-string.

We construct a new expr-string 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-expr-string

(defmacro change-expr-string (x &rest args)
  (std::change-aggregate 'expr-string
                         x args
                         '((:strings . expr-string->strings)
                           (:info . expr-string->info))
                         'change-expr-string
                         'remake-expr-string))