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