perl ã§ãªãã¸ã§ã¯ãæåãç®æããuse strictããããã°ã©ã ãå¾¹åºãã¦ããã¨ãã©ãã«ãããããªãã®ãããã¡ã¤ã«ãã³ãã«ãã®åå¨ã§ãã open(FD, "test.txt"); close(FD); ãã® FD ããªãã¸ã§ã¯ãã¨ãã¦ä½¿ãé¢æ°ã«å¯¾ãã¦å¼æ°ã¨ãã¦ä¸ããããããã®ã§ãããuse strict ãªç°å¢ã§ã¯ my $fh = 'FD'; open($fh, "test.txt"); close($fh); ã¨ãã£ã¦ããã¨ã©ã¼ã«ãªã£ã¦ãã¾ãã¾ãããã¨è¨ã£ã¦ãã®ããã ãã« no strict refs; ã¨ãããããªããã¾ããã®æ¹æ³ã§ã¯ãPerlããã«ãã¹ã¬ããåä½ãããã¨ãããã¡ã¤ã«ãã£ã¹ã¯ãªãã¿ã®åå空éãè¡çªãããã¡ã¤ã«ãéããªããªãåé¡ãããã¾ãã ãããã§æ å ±ãæ¼ã£ã¦ããã¨ãããããã¨ãã¯ãã¡ã¤ã«ãã³ãã«ãåççæããæ¹æ³ãç´¹ä»ããã¦ãã¾ãã use FileHan
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