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#Ruby nested class and module pattern : child class or module not ove
```rb
# A is class
class A
end
A.class
# => Class
# A is class and B is class
class A::B
end
A.class
# => Class
A::B.class
# => Class
# A is class but C is module
module A::C
end
A.class
# => Class
A::B.class
# => Class
A::C.class
# => Module
A::C.ancestors
# => [A::C]
# Unable to replace class to module or module to class
module A
end
# TypeError: A is not a module
module A::B
end
# TypeError: B is not a module
class A::C
end
# TypeError: C is not a class
# when Module is parent pattern
module D
end
module D::E
end
class D::F
end
D.class
# => Module
D::E.class
# => Module
D::F.class
# => Class
# Original by Github issue
https://github.com/YumaInaura/YumaInaura/issues/2827
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# Twitter
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# 公開日時
2019-12-09
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