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| # How does work? | |
| # at top-level: | |
| Hello #=> :hello | |
| class Friend | |
| puts Hello | |
| end | |
| #=> NameError: uninitialized constant Friend::Hello |
class << self
Hello = "hello"
end
class Friend
puts Hello
end
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module Test
Hello = "hello"
end
metaclass = class << self ; self ; end
puts metaclass.constants
metaclass.instance_eval do
extend Test
end
class Friend
puts Hello
end