add a private static method to a class in ruby

To add a private static method to a class in Ruby, you can follow these steps:

1. Define the private static method inside the class.
2. Use the private_class_method method to make it private.

Here's an example:

main.rb
class MyClass
  private_class_method def self.my_private_static_method
    # code here
  end
end
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In this example, my_private_static_method is a private static method of the MyClass class. The private_class_method method is used to make it private.

The method can be called inside the class, but not outside of it. This helps with encapsulation and data hiding, which are important aspects of object-oriented programming.