If you have been hacking ruby for a while you should have heard that “Everything is an object”. To understand this concept knowing what a singleton class is important. Yehuda Katz’s post is a good source for it.
My ruby version 1.9.2.
First I’m going to show you how to add methods to instances by using
You can also write an instance method to create instance methods.
send must be used because
define_method is private.
Write a singleton method to create instance methods.
Now it is time to add singleton methods. When we call
define_method, it creates an instance method. What we have to do is call
define_method on class’ singleton class.
Getting singleton class of a class:
First defining singleton method to create singleton methods.
Then defining instance method to create singleton methods.