From: Tanaka Akira <akr@...17n.org>
Date: 2002-02-13T10:18:28+09:00
Subject: [ruby-list:33877] Re: 変数の宣言

In article <200202130049.g1D0nlt11995@sharui.nakada.kanuma.tochigi.jp>,
  nobu.nakada@nifty.ne.jp writes:

> $B;n$7$F$_$F5$$E$$$?$N$G$9$,!"$3$&$$$&$N$O:#$N(B1.7$B$G$O%(%i!<(B($B@53N(B
> $B$K$O%a%=%C%I$rC5$=$&$H$7$F$k(B)$B$K$J$j$^$9!#(B

$B$*$)!#(B

>   a &&= a

$B$3$l$O%(%i!<$K$J$j$^$;$s!#(B

% ruby -ve 'a &&= a'
ruby 1.7.2 (2002-02-10) [i386-freebsd4.2]
% 

$B1&JU$,I>2A$5$l$J$$$+$i$G$9$+$M!#(B

>   b ||= b
>   c += c

$B$3$A$i$O$?$7$+$K%(%i!<$K$J$j$^$9$M!#(B

% ruby -ve 'b ||= b'
ruby 1.7.2 (2002-02-10) [i386-freebsd4.2]
-e:1: undefined local variable or method `b' for #<Object:0x8121378> (NameError)

> $B0l4S@-$NE@$+$i$9$l$P!"C1=c$JBeF~$G$bF1$8$h$&$K$7$?$[$&$,$$$$$H(B
> $B;W$$$^$9!#(B

$B;d$b$3$N0l4S@-$NGK$l$O0U?^$;$6$k$b$N$G$"$k$H$O;W$$$^$9$,!"$I$A$i$K9g$o(B
$B$;$k$Y$-$+$O$A$HHyL/$J$s$8$c$J$$$+$H;W$$$^$9!#(B

$B:#$N(B Ruby $BN.$r4S$/$J$i!"$`$7$m<+8JBeF~$N5sF0$rC1=c$JBeF~$K9g$o$;$k$3$H(B
$B$K$J$k$s$8$c$J$$$G$7$g$&$+!#$^$!!"$=$l$K$I$s$J0UL#$,$"$k$+$OFf$G$9$1$l(B
$B$I!#@)8f$NN.$l$K1h$C$F$d$k$s$J$iA4It$4$C$=$jJQ$($?$[$&$,(B...
-- 
[$BEDCf(B $BE/(B][$B$?$J$+(B $B$"$-$i(B][Tanaka Akira]
$B!V$U$($m(B! $B$o$+$a$A$c$s:n@o$G$9$(C"=$B!W(B(Little Worker, $B7KM7@84](B)