Modifying constructor for identifier-option-some structures.
(change-identifier-option-some x [:val <val>])
This is an often useful alternative to make-identifier-option-some.
We construct a new identifier-option-some structure that is a copy of
This is an ordinary
Macro:
(defmacro change-identifier-option-some (x &rest args) (std::change-aggregate 'identifier-option-some x args '((:val . identifier-option-some->val)) 'change-identifier-option-some 'nil))