# [Feature #679] Integer#to_s(:step=>3, :sep=>",") \$B\$,M_\$7\$\$(B

e\$B%A%1%C%He(B #679 e\$B\$,99?7\$5\$l\$^\$7\$?!#e(B (by Martin De\$(D+de(Brst)

e\$B:G=i\$NNc\$Oe(B “12,345,678” e\$B\$N\$G\$O\$J\$\$\$G\$7\$g\$&\$+!#e(B

e\$B\$3\$l\$G\$O%\$%s%IIw\$NI=5-\$,IT2DG=\$G\$O\$J\$\$\$G\$7\$g\$&\$+e(B (“1,23,45,678”,
e\$B\$h\$&\$9\$k\$K0lHV1&\$K\$O;0\$D!"\$=\$N:8\$OFs\$D\$:\$De(B)e\$B!#e(B

## Integer [email protected]\$1\$G\$O\$J\$/!"B>\$N?t\$O\$I\$&\$G\$7\$g\$&\$+!#e(B

http://redmine.ruby-lang.org/issues/show/679

e\$BF#2,\$G\$9!#e(B

e\$B:G=i\$NNc\$Oe(B “12,345,678” e\$B\$N\$G\$O\$J\$\$\$G\$7\$g\$&\$+!#e(B

e\$B\$"!#\$=\$&\$G\$7\$?!#e(B

e\$B\$3\$l\$G\$O%\$%s%IIw\$NI=5-\$,IT2DG=\$G\$O\$J\$\$\$G\$7\$g\$&\$+e(B (“1,23,45,678”, e\$B\$h\$&\$9\$k\$K0lHV1&\$K\$O;0\$D!"\$=\$N:8\$OFs\$D\$:\$De(B)e\$B!#e(B

e\$B%\$%s%IIw\$O9MN8\$7\$F\$\$\$^\$;\$s!#e(Bsprintfe\$B\$b9MN8\$7\$F\$\$\$^\$;\$s\$7!#e(B

Integer [email protected]\$1\$G\$O\$J\$/!"B>\$N?t\$O\$I\$&\$G\$7\$g\$&\$+!#e(B

[email protected]?t\$G\$O\$3\$N5!G=\$,\$"\$l\$P\$\$\$\$\$J\$H\$O;W\$C\$?\$N\$G\$9\$,!“e(B
e\$BIbF0>[email protected]?t\$OI,MW\$,\$”\$k\$N\$G\$7\$g\$&\$+!#e(B
e\$B\$*\$=\$i\$/6b3[\$NI=8=\$G\$7\$+;H\$o\$J\$\$\$H;W\$C\$F\$\$\$^\$9!#e(B

[email protected]@%\$G\$9!#e(B

e\$B:G=i\$NNc\$Oe(B “12,345,678” e\$B\$N\$G\$O\$J\$\$\$G\$7\$g\$&\$+!#e(B

e\$B\$3\$l\$G\$O%\$%s%IIw\$NI=5-\$,IT2DG=\$G\$O\$J\$\$\$G\$7\$g\$&\$+e(B
(“1,23,45,678”, e\$B\$h\$&\$9\$k\$K0lHV1&\$K\$O;0\$D!"\$=\$N:8\$OFs\$D\$:\$De(B)e\$B!#e(B

POSIX C e\$B\$N;EMM\$r??;w\$F!“e(B
12345678.to_s(:step=>[3, 2, 0], :sep=>”,") #=> “1,23,45,678”
e\$B\$H\$+e(B
12345678.to_s(:step=>“320”, :sep=>",") #=> “1,23,45,678”
e\$B\$H\$+e(B

e\$B\$"\$H\$O!"e(B:step e\$B\$h\$je(B :grouping e\$B\$G\$9\$+\$M\$’!#e(B

e\$B\$5\$/\$G\$9!#e(B

stepe\$B\$O0cOB46\$,\$"\$k\$N\$G\$9\$,!"\$+\$H\$\$\$C\$Fe(Bgroup_widthe\$B\$G\$OD9\$\$\$G\$9\$M!D!De(B

The symbol for this is called the thousands separator or, more
generally (see India and China below), digit group separator
[email protected]\$=\$&\$G\$9!#e(B[wikipedia]

2008/10/23 16:45 Fujioka [email protected]:

[email protected]?t\$G\$O\$3\$N5!G=\$,\$"\$l\$P\$\$\$\$\$J\$H\$O;W\$C\$?\$N\$G\$9\$,!“e(B
e\$BIbF0>[email protected]?t\$OI,MW\$,\$”\$k\$N\$G\$7\$g\$&\$+!#e(B
e\$B\$*\$=\$i\$/6b3[\$NI=8=\$G\$7\$+;H\$o\$J\$\$\$H;W\$C\$F\$\$\$^\$9!#e(B

e\$BJd=uDL2_C10L\$r9MN8\$9\$l\$P!"6b3[\$NI=5-\$K\$b>.?t\$O=P\$F\$-\$^\$9\$M!#e(B