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• Group-literal-affine

Change-group-literal-affine

Modifying constructor for group-literal-affine structures.

Syntax

(change-group-literal-affine x 
                             [:x <x>] 
                             [:y <y>]) 

This is an often useful alternative to make-group-literal-affine.

We construct a new group-literal-affine 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-group-literal-affine

(defmacro change-group-literal-affine (x &rest args)
  (std::change-aggregate 'group-literal-affine
                         x args
                         '((:x . group-literal-affine->x)
                           (:y . group-literal-affine->y))
                         'change-group-literal-affine
                         'nil))