Array#index e$B$He(B Enumerable#find_index
e$B$,$+$V$C$F$$$k$N$G$9$,!“e(B
Enumerable#index e$B$,$”$l$Pe(B Enumerable#find_index
e$B$OITMW$@$H;W$&$N$G$9$,!"e(B
e$B$$$+$,$G$7$g$&$+!)e(B
a = %w[a b C D e]
a.index {|x| x =~ /^[A-Z]/ } # => 2
a.find_index {|x| x =~ /^[A-Z]/ } # => 2
a.index {|x| x =~ /^z/ } # => nil
a.find_index {|x| x =~ /^x/ } # => nil
(2…5).to_a.index(&:odd?) # => 1
(2…5).find_index(&:odd?) # => 1
(2…5).to_a.index(4) # => 2
(2…5).find_index(4) # => 2
e$BJX>h$7$F$_$?!#e(B
At Wed, 14 May 2008 02:05:43 +0900,
[email protected] wrote:
Array#index 㨠Enumerable#find_index ãŒã‹ã¶ã£ã¦ã„ã‚‹ã®ã§ã™ãŒã€
Enumerable#index ãŒã‚れ㰠Enumerable#find_index ã¯ä¸è¦ã ã¨æ€ã†ã®ã§ã™ãŒã€
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 Enumerable#find_index ã® index ã¸ã®æ”¹åã‚’æ案ã—ãªã‹ã£ãŸã®ã¯ã€
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String#index ã¯æ¤œç´¢æ–¹æ³•ãŒé•ã„ã¾ã™ã—ã€å±žæ€§ã¨ã—㦠index ã‚’æŒã¤
クラスもã‚ã‚Šãµã‚Œã¦ã„ãã†ã§ã™ã€‚
 ãªã®ã§ã€ Enumerable ã§ã¯æŽ§ãˆã‚㪠find_index ã¨ã„ã†åå‰ãŒå¦¥å½“
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e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B
In message “Re: [ruby-dev:34680] Array#index / Enumerable#find_index”
on Wed, 14 May 2008 02:05:43 +0900, [email protected] writes:
|Array#index e$B$He(B Enumerable#find_index e$B$,$+$V$C$F$$$k$N$G$9$,!“e(B
|Enumerable#index e$B$,$”$l$Pe(B Enumerable#find_index e$B$OITMW$@$H;W$&$N$G$9$,!"e(B
|e$B$$$+$,$G$7$g$&$+!)e(B
knue$B$5$s$+$i$b;XE&$,$"$j$^$7$?$,!"e(Bindexe$B$Oe(BEnumerablee$B$K;H$&$K$Oe(B
e$B0lHLE*$9$.$ke(B(e$B=EJ#$7$=$&e(B)e$B$J$N$G;D$=$&$H;W$$$^$9!#e(B