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printf("%'d", 1234567890);
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def ts x; x.to_s =~ /^([^.]*\d)(\d{3}(\.|$))/ ? x = ts($1)+","+$2+$' : x; end
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function ts(x){ var y,z; return x.toString().match(/^([^.]*\d)(\d{3}(\.|$))/) ? (y = RegExp.$2, z = RegExp.rightContext, x = ts(RegExp.$1) + "," + y + z) : x; }ºÆµ¢¤¹¤ë¤È RegExp ¤¬¾å½ñ¤¤µ¤ì¤ë¤Î¤Ç¡¢·×»»½ç½ø¤ËÃí°Õ¤·¤Ê¤¬¤é¼ã´³¹©Éפ¹¤ëɬÍפ¬¤¢¤ë¤ß¤¿¤¤¡£
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#include <string> #include <sstream> #include <locale> template<class T> inline const std::string ts(T v) { std::ostringstream oss; oss.imbue(std::locale("")); oss << std::fixed << v; return oss.str(); }
»²¹Í:
- stackoverflow / 2016-11-16: Format thousands separator
- Yahoo!ÃηÃÂÞ / 2016-12-14: Microsoft Visual C++ 2010 ¤Î MFC ¤ò»È¤Ã¤Æ¤¤¤Þ¤¹¡£¡Ä
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- MSDN Library / NET Development / .NET Framework 4.6 and 4.5 / Development Guide / Application Essentials / Base Types / Formatting Types / Custom Numeric Format Strings # The "," Custom Specifier
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a = 123456789 f'{a:,}' # or f'{a:_}'¤Þ¤¿¡¢¡Ö¿ôÃÍ¥ê¥Æ¥é¥ë¡×¤Ç¤ÏÀ°¿ô¡¢ÉâÆ°¾®¿ôÅÀ¿ô¶¦¤Ë "_" ¤¬·å¶èÀÚ¤êʸ»ú¤È¤·¤Æ̵»ë¤µ¤ì¤ë¤Î¤Ç¡¢°Ê²¼¤Î¤è¤¦¤Ë¿ô»ú¤Î´Ö¤ÎǤ°Õ¤Î°ÌÃ֤˽ñ¤¯¤³¤È¤¬¤Ç¤¤ë¡£
a = 1_23_456_7890
»²¹Í:
- DevelopersIO / 2019-08-12: ÃΤäƤ¤¤ë¤è¤¦¤Ç°Õ³°¤ÈÃΤé¤Ê¤«¤Ã¤¿Python¾®¥Í¥¿½¸, ¥Í¥¿¸µ: Twitter: 1161483051811188738
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