浏览代码

Copy addition expressions

Samuel W. Flint 5 年之前
父节点
当前提交
cbb528960e
共有 1 个文件被更改,包括 4 次插入0 次删除
  1. 4 0
      larcs.org

+ 4 - 0
larcs.org

@@ -350,6 +350,10 @@ CLOSED: [2019-01-17 Thu 09:53]
   (defmethod to-sexp ((expression <addition>) &optional resolve-constants-p)
     `(+ ,@(mapcar #'(lambda (exp) (to-sexp exp resolve-constants-p))
                   (slot-value expression 'terms))))
+
+  (defmethod copy-expression ((expression <addition>))
+    (make-instance '<addition>
+                   :terms (mapcar #'copy-expression (slot-value expression 'terms))))
 #+END_SRC
 
 *** DONE Subtractions