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p Object.private_method_defined?(:foo)

def foo(msg = :foo)
  p msg
end

p Object.private_method_defined?(:foo)
Object.send(:foo)

bar = :foo
send(bar)
send(bar, :bar)
Success #stdin #stdout 0.06s 9696KB
comments (?)
stdin
copy 
Standard input is empty
stdout
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false
true
:foo
:foo
:bar
https://ideone.com/JDacS5
language:
Ruby (ruby 2.5.5)
created:
10 years ago
visibility:
public

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