Feature of recursive Array#join

Ruby Development
1

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% cat test.rb
x = [[1,2],[3,4]]
x << x
puts x.inspect
puts x.join(’:’)

% ruby -v test.rb
ruby 1.8.7 (2008-08-11 patchlevel 72)
[i686-darwin9]
[[1, 2], [3, 4], […]]
1:2:3:4:1:2:3:4:[…]

% ruby-1.9.1 -v test.rb
ruby 1.9.1 (2008-10-31)
[i386-darwin9.5.0]
[[1, 2], [3, 4], […]]
1:2:3:4:[…]:[…]:[…]

2

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In message “Re: [ruby-dev:37019] feature of recursive Array#join”
on Mon, 3 Nov 2008 12:10:17 +0900, “Yugui (Yuki S.)”
[email protected] writes:

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