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