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`Class.new {...}` uses a closure to define a class. Closure keeps
environment that includes local variables and so on. Assignment changes
the environment. So `klass = Class.new { KEYS = [] }` doesn't define
`klass::KEYS`. It defines `Object::KEYS`.
a = 1
Class.new do
a = 2
X = 3
end
p a # => 2
p X # => 3
We need to use `const_set` to define a constant in `Class.new {...}`.
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| .. | ||
| fluentd | ||
| fluentd_spec.rb | ||
| plugin_spec.rb | ||
| user_spec.rb | ||