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kommen/array_test.rb

Created December 1, 2011 11:15
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Ruby Array inheritance change
Raw
array_test.rb
class MyArray < ::Array
end
a = MyArray.new
puts a.class
puts a.reverse.class
Raw
output
$ ruby -v
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.2.0]
$ ruby array_test.rb
MyArray
Array
$ ruby -v
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-darwin11.2.0]
$ ruby array_test.rb
MyArray
MyArray
$ ruby -v
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin11.2.0]
$ ruby array_test.rb
MyArray
MyArray
$ ruby -v
ruby 1.9.1p378 (2010-01-10 revision 26273) [i386-darwin11.2.0]
$ ruby array_test.rb
MyArray
MyArray
$ ruby -v
ruby 1.8.7 (2010-01-10 patchlevel 249) [universal-darwin11.0]
$ ruby array_test.rb
MyArray
MyArray
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kommen commented Dec 1, 2011

This change was intentional and isn't a bug:
https://github.com/rubyspec/rubyspec/blob/master/core/array/reverse_spec.rb#L18-28

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kommen commented Dec 1, 2011

Related discussion:
http://redmine.ruby-lang.org/issues/show/4136
http://redmine.ruby-lang.org/projects/ruby-trunk/repository/revisions/30148/diff/array.c

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