From: Kazuhiro Yoshida <moriq@...>
Date: 2003-04-22T08:18:29+09:00
Subject: [ruby-list:37606] 1.8.0 to_ary

もりきゅうです。

$ ruby -v
ruby 1.8.0 (2003-04-21) [i386-mswin32]

to_ary の挙動がおかしいようで、思うように動きません。

$ cat 1.rb
_, foo, bar, baz = /(foo)(bar)(baz)/.match("foobarbaz")
p _, foo, bar, baz

$ ruby 2.rb
#<MatchData:0x258e4e8>
nil
nil
nil

$ cat 2.rb
require 'cgi'
cgi = CGI.new
foo, = cgi['foo']
puts foo

$ ruby 2.rb
(offline mode: enter name=value pairs on standard input)
foo=1
2.rb:4:in `puts': stack level too deep (SystemStackError)
        from 2.rb:4

今は小細工してしのいでいます。

$ cat 1.rb
_, foo, bar, baz = /(foo)(bar)(baz)/.match("foobarbaz").to_a
p _, foo, bar, baz

$ ruby 1.rb
"foobarbaz"
"foo"
"bar"
"baz"

$ cat 2.rb
require 'cgi'
cgi = CGI.new
foo, = cgi.params['foo']
puts foo

$ ruby 2.rb
(offline mode: enter name=value pairs on standard input)
foo=1
1

----
YOSHIDA Kazuhiro  moriq@moriq.com  http://www.moriq.com/