Check out example codes for "creating a class in ruby". It will help you in understanding the concepts better.

Code Example 1

class SampleHumanClass
	attr_accessor :name, :age, :gender
    
    @@all = []
    
    def initialize(name, age, gender)
    	@name = name
        @age = age
        @gender = gender
        @@all << self
    end 
    
    def self.all
    	@@all
    end
end

#now we can create an instance of the class

mike = SampleHumanClass.new("Mike", 32, "Male")

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