Next: Classifying Lists, Previous: Self-Evaluating Forms, Up: Forms [Contents][Index]
¥·¥ó¥Ü¥ë¤òɾ²Á¤¹¤ë¤È¤¤Ë¤Ï¡¢¥·¥ó¥Ü¥ë¤òÊÑ¿ô¤È¤·¤Æ°·¤¤¤Þ¤¹¡£ ¤½¤Î·ë²Ì¤Ï¡¢Ãͤ¬¤¢¤ì¤Ð¡¢ÊÑ¿ô¤ÎÃͤǤ¹¡£ ¡ÊÃÍ¥»¥ë¤¬¶õ¤Ç¤¢¤ê¡ËÃͤ¬¤Ê¤±¤ì¤Ð¡¢¥¨¥é¡¼¤òÄÌÃΤ·¤Þ¤¹¡£ ÊÑ¿ô¤Î»È¤¤Êý¤Ë¤Ä¤¤¤Æ¾Ü¤·¤¯¤Ï¡¢See Variables¡£
¤Ä¤®¤ÎÎã¤Ç¤Ï¡¢setq
¤ò»È¤Ã¤Æ¥·¥ó¥Ü¥ë¤ÎÃͤòÀßÄꤷ¤Þ¤¹¡£
¤½¤Î¤¢¤È¤Ç¥·¥ó¥Ü¥ë¤òɾ²Á¤¹¤ë¤È¡¢setq
¤ÇÊݸ¤·¤¿Ãͤò¼è¤ê½Ð¤»¤Þ¤¹¡£
(setq a 123) ⇒ 123
(eval 'a) ⇒ 123
a ⇒ 123
¥·¥ó¥Ü¥ënil
¤Èt
¤ÏÆÃÊ̤˰·¤¤¡¢
nil
¤ÎÃͤϤĤͤËnil
¤Ç¤¢¤ê¡¢
t
¤ÎÃͤϤĤͤËt
¤Ç¤¹¡£
¤³¤ì¤é¤ËÊ̤ÎÃͤòÀßÄꤷ¤¿¤ê¡¢Ê̤ÎÃͤò«Çû¤¹¤ë¤³¤È¤Ï¤Ç¤¤Þ¤»¤ó¡£
¤·¤¿¤¬¤Ã¤Æ¡¢eval
¤Ï¤³¤ì¤é¤ò¾¤Î¥·¥ó¥Ü¥ë¤ÈƱÍͤ˰·¤¤¤Þ¤¹¤¬¡¢
¤³¤ì¤é2¤Ä¤Î¥·¥ó¥Ü¥ë¤Ï¼«¸Êɾ²Á·¿¥Õ¥©¡¼¥à¤Î¤è¤¦¤Ë¤Õ¤ë¤Þ¤¤¤Þ¤¹¡£
‘:’¤Ç»Ï¤Þ¤ë̾Á°¤Î¥·¥ó¥Ü¥ë¤âƱ¤¸°ÕÌ£¤Ç¼«¸Êɾ²Á·¿¤Ç¤¢¤ê¡¢
ƱÍͤˡ¢¤½¤ÎÃͤòÊѹ¹¤Ç¤¤Þ¤»¤ó¡£
See Constant Variables¡£