From: Tanaka Akira <akr@...17n.org>
Date: 2002-11-18T15:58:42+09:00
Subject: [ruby-dev:18831] Re: Enumerable#zip

In article <1037350413.201570.3051.nullmailer@picachu.netlab.jp>,
  matz@ruby-lang.org (Yukihiro Matsumoto) writes:

> [a,b]$B$H$$$&FbIt9=B$$r;}$C$?%G!<%?$,$"$i$+$8$a$"$C$F!"$=$l$r(B
> zip$B$7$?$$$C$F6ILL$O(B(assoc$B$d(Brassoc$B$H0c$C$F(B)$B$A$g$C$H;W$$$D$+$J(B
> $B$$$N$G$9$,(B...$B!#(B

$B;d$,A[Dj$7$F$$$?$N$OI=$N=D2#$rF~$l49$($k$h$&$J$b$N$G!"$d$C$Q$jG[Ns$NG[(B
$BNs$,$O$8$a$+$i$"$k$h$&$J$b$N$G$9!#(B

2$B<!85$NI=$J$i$J$s$G$b$h$/$F!"$?$H$($P(B... /etc/passwd $B$rFI$s$@$h$&$J$b(B
$B$N$G$9!#(B
  IO.readlines("/etc/passwd").map {|line| line.split(/:/)}
$B$H$+!#(B($B$3$l$@$H%3%a%s%H$r$"$D$+$C$F$J$$$+!#(B)

> $B%i%$%V%i%j$N@_7W$G$O(BYAGNI$B$N86B'$,E,MQ$7$K$/$$$H$O$$$(!"E57?(B
> $BE*$JMxMQNc$,;W$$$D$+$J$$%a%=%C%I$O$d$C$Q$jF3F~$7$A$c$$$1$J$$(B
> $B$h$&$J!#(B

$B8=:_$N(B zip $B$NE57?E*$JMxMQNc$O$I$&$J$s$G$7$g$&(B?

> $B;d$N463P$G$O!"$I$A$i$bNc30$r=P$7$?$i;H$$$K$/$$$H;W$$$^$9!#A0(B
> $B<T$K$D$$$F$O(B[ary0, ary1]$B$N$h$&$J%G!<%?$,$"$i$+$8$a$"$C$?$H$7(B
> $B$F$b!"$=$N(Bary0$B$H(Bary1$B$ND9$5$,$=$m$C$F$$$k$3$H$rJ]>Z$9$k$?$a$K(B
> $B$O$I$3$+$G%A%'%C%/$,I,MW$J$o$1$G$9$+$i!#(B

$B;d$O!"(Bzip $B$,;H$o$l$k;~$K$O$J$s$i$+$NA0Ds$+$iD9$5$,B7$C$F$$$k$3$H$r%W%m(B
$B%0%i%^$,CN$C$F$$$k$N$G$O$J$$$+$H9M$($F$$$^$9!#8@8l=hM}7O$H$+$GJQ?t$NL>(B
$BA0$NG[Ns$HCM$NG[Ns$ND9$5$,F1$8$@$H$+!"(B/etc/passwd $B$N3F9T$r(B split $B$7$?(B
$B$b$N$@$+$iMWAG?t$O$9$Y$F(B 7 $B$@$H$+!#(B

$B$=$b$=$b!"D9$5$,B7$C$F$$$J$$$H$-$K(B zip $B$,E,@Z$JNc$C$F;W$$IU$+$J$$$s$G(B
$B$9$,!#(B

$B$^$!!"B7$C$F$$$k$3$H$rCN$C$F$k$s$J$iB7$C$F$J$$;~$N5sF0$O$I$&$G$b$$$$$8$c(B
$B$J$$$+$H$$$&OC$b$"$j$^$9$,!";d$O!"D9$5$,B7$C$F$$$J$$;~$K$O(B zip $B$OLr$K(B
$B$?$?$J$$$N$G$O$J$$$+$H5?$C$F$$$k$N$G!"(Bzip $B$,8!::$7$F$/$l$?$[$&$,$$$$$s(B
$B$8$c$J$$$+$J$!!"$H;W$C$F$$$k$o$1$G$9!#(B

Haskell $B$_$?$$$KL58BD9%j%9%H$,4JC1$K07$($k$J$i!"M-8B$J$d$D$,$R$H$D$HL5(B
$B8B$J$N$,$$$/$D$+$r(B zip $B$9$k$H$$$&$h$&$JMQES$,$"$k$N$G!":GC;$K$"$o$;$k(B
$B$N$b$$$$$+$b$7$l$^$;$s$1$l$I!#(B
-- 
[$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)