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Sd-key-p

Change-sd-key

A copying macro that lets you create new sd-key-p structures, based on existing structures.

Syntax:

(change-sd-key x 
               [:pat <pat>] 
               [:index <index>] 
               [:orig <orig>])

This is a sometimes useful alternative to make-sd-key. It constructs a new sd-key-p 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 defaggregate.

Macro: change-sd-key

(defmacro change-sd-key (x &rest args)
  (std::change-aggregate 'sd-key
                         x args
                         '((:pat . sd-key->pat)
                           (:index . sd-key->index)
                           (:orig . sd-key->orig))
                         'change-sd-key
                         'remake-sd-key))