Singleton Class

TODO

• Singleton class and Singleton design pattern are different.

Checking if a class is a singleton class:

[105] pry(main)> Animal.singleton_class?

=> false

[106] pry(main)> class Animal

[106] pry(main)* end

=> nil

[107] pry(main)> Animal.singleton_class?

=> false

Resources:

Good article: https://devalot.com/articles/2008/09/ruby-singleton