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