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class ImaHigherOrder
  def f(x)
    return x + 3
  end

  def z(x)
    return method(x)
  end
end

x = ImaHigherOrder.new
puts x.z(:f)

Success #stdin #stdout 0.05s 9608KB

stdin

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Standard input is empty

stdout

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#<Method: ImaHigherOrder#f>

https://ideone.com/11ITZB

language:

Ruby (ruby 2.5.5)

created:

visibility:

public

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