Ruby ã¨ã™ã¦ããªé›£èªåŒ– - ã¾ã‚ã‚ã‚‚(ã“れ㯠Ruby Advent Calendar jp: 2009 ã® 16 日目ã®è¨˜äº‹ã§ã™ã€‚) Ruby ã¯èªã¿ã‚„ã™ã„プãƒã‚°ãƒ©ãƒ ã‚’ç°¡å˜ã«æ›¸ã‘る言語ã§ã™ãŒã€èªã¿ã«ãã„プãƒã‚°ãƒ©ãƒ ã‚‚ç°¡å˜ã«æ›¸ã‘ã¾ã™ã€‚ 今回ã¯ã€Ruby ã§ã§ãã‚‹ã‹ã‚“ãŸã‚“ãªé›£èªåŒ–ã®ãƒ†ã‚¯ãƒ‹ãƒƒã‚¯ã‚’ 4 ã¤ç´¹ä»‹ã—ã¾ã™ã€‚ 1. Integer#to_s を使ã†æ–¹æ³• Integer#to_s *1 ã¯ã€ä½•é€²æ•°ã¨ã—ã¦æ–‡å—列化ã™ã‚‹ã‹ã‚’引数ã§æŒ‡å®šã§ãã¾ã™ã€‚普通㯠2 ã€10 ã€16 ãらã„ã—ã‹ä½¿ã‚ãªã„ã¨æ€ã„ã¾ã™ãŒã€å®Ÿã¯ 36 ã¾ã§æŒ‡å®šã§ãã¾ã™ã€‚ 0.to_s(36) #=> "0" 1.to_s(36) #=> "1" ... 8.to_s(36) #=> "8" 9.to_s(36) #=> "9" 10.to_s(36) #=> "a" 11.to_s(36) #=> "b" ... 34.to_s(36) #=> "y" 35.to_s(
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