What is advanced metaprogramming in Ruby?

What is advanced metaprogramming in Ruby?

Advanced metaprogramming in Ruby allows developers to write code that modifies or defines classes and methods dynamically.

Can you give me an example of how to use metaprogramming in Ruby?

Sure! You can use define_method to create methods dynamically. For example:

class DynamicMethods
  def self.create_method(name)
    define_method(name) do
      "Method #{name} called"
    end
  end
end

DynamicMethods.create_method(:hello)
puts DynamicMethods.new.hello  # Outputs: Method hello called

What are some common use cases for metaprogramming?

Common use cases include creating domain-specific languages (DSLs), implementing callbacks, and reducing boilerplate code.

Are there any downsides to using metaprogramming?

Yes, metaprogramming can make code harder to read and debug, and it may introduce performance overhead.