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