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• Lexeme-option-some

Change-lexeme-option-some

Modifying constructor for lexeme-option-some structures.

Syntax

(change-lexeme-option-some x 
                           [:val <val>]) 

This is an often useful alternative to make-lexeme-option-some.

We construct a new lexeme-option-some 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-lexeme-option-some

(defmacro change-lexeme-option-some (x &rest args)
  (std::change-aggregate 'lexeme-option-some
                         x
                         args '((:val . lexeme-option-some->val))
                         'change-lexeme-option-some
                         'nil))