Implementing metaprogramming with define_method

In this section, you'll learn about another metaprogramming mechanism called define _method that will allow you to dynamically create methods at runtime in a Ruby program.

We'll continue with our Author class and use a method called define_method here:

class Author
  define_method("some_method") do
    puts "Some details"
  end
end 

Next, we'll call this method:

author = Author.new
author.some_method

When you run this code, it'll print out the Some details value.

You may wonder how this is different from a regular method, such as this one:

def some_method
  puts "Some details"
end 

The answer is, they are the same!

So, this is not the kind of implementation you'd use define_method for in the real world. However, I wanted to start with this as a base case so you can see the core functionality.

Now let's look at a more practical example. Going back to our Author class, let's imagine that we have different genres and we have to print out the details of...