Next: Regexp, Previous: Len, Up: Text handling [Contents][Index]
Éôʬʸ»úÎó¤Î¸¡º÷¤Ïindex
¤Ç¹Ô¤¤¤Þ¤¹¡£
index(string, substring)
¤³¤Î¥Þ¥¯¥í¤Ïstring¤ÎÃæ¤Çsubstring¤¬ºÇ½é¤Ë½Ð¸½¤¹¤ë
°ÌÃ֤Υ¤¥ó¥Ç¥Ã¥¯¥¹¤ËŸ³«¤µ¤ì¤Þ¤¹¡£
string¤ÎÀèÆ¬¤Ë¤¢¤ëʸ»ú¤Î¥¤¥ó¥Ç¥Ã¥¯¥¹¤Ï0¤Ç¤¹¡£
substring¤¬string¤Ë´Þ¤Þ¤ì¤Ê¤¤¤È¤¡¢
index
¤Ï‘-1’¤ËŸ³«¤µ¤ì¤Þ¤¹¡£
index(`gnus, gnats, and armadillos', `nat') ⇒7 index(`gnus, gnats, and armadillos', `dag') ⇒-1
ÁȤ߹þ¤ß¥Þ¥¯¥íindex
¤Ï°ú¿ô¤òÍ¿¤¨¤¿¤È¤¤À¤±Ç§¼±¤µ¤ì¤Þ¤¹¡£