[–] lispm 10y ago ↗ The USE construct is trivial in Lisp: (defmacro use ((&rest vars) &body body) `(block nil (let ,(mapcar (lambda (sym) (list sym sym)) vars) ,@body))) Example: (defun foo (x y) (+ (use (x) (incf x 10) (return (+ x y))) (use (y) (incf y 12) (return (+ x y))))) -> 28
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