å¼ãç¶ã Primitive Procedureã®å®è£ ãä»æ¥ã¯ cons/car/cdr ã ç´Lispã«ã¯æ¬ ãããªãè¦ç´ ã§ãã Pairã¨ããã¯ã©ã¹ãç¨æãã¦ããã¦ã consã®applyæã« Pair ãè¿ãã car/cdr 㯠Pair ãåãåãããããã first/secondãè¿ãã ã¨ããå®è£ ã§ãã ä¾ã®ãã¨ã以ä¸ã®ããã«åå空éã«è¿½å ããã environment->defineVariable(new Variable("+"), new Plus()); environment->defineVariable(new Variable("cons"), new Cons()); environment->defineVariable(new Variable("car"), new Car()); environment->defineVariable(new Va
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