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Const-enum

Change-const-enum

Modifying constructor for const-enum structures.

Syntax

(change-const-enum x 
                   [:ident <ident>])

This is an often useful alternative to make-const-enum.

We construct a new const-enum 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-const-enum

(defmacro change-const-enum (x &rest args)
  (std::change-aggregate 'const-enum
                         x args '((:ident . const-enum->ident))
                         'change-const-enum
                         'remake-const-enum))