In the code below, method roar is not defined in class Lion, but still can be called using method_missing.

class Lion
  def method_missing(name, *args)
    puts "Lion will #{name}: #{args[0]}"
  end
end

lion = Lion.new
lion.roar("ROAR!!!") # => Lion will roar: ROAR!!!

In which situations and how should I use this method_missing? And is it safe to use?

ruby metaprogramming
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