Class_eval Vs Instance_eval

    #gem config

    #ruby on rails serializer without active_model_serializers

    #password generator with animals color

    #ruby call module method

    #liz abinante

    #globalize gem

    #ruby builder pattern

    #arel gem

    #jsonify ruby

    #ruby create module

    #self in ruby

    #class_eval ruby

    #ruby class_eval

    #ruby self

    #class_eval vs instance_eval

    #ruby include

    #ruby prepend

    #ruby singleton

    #ruby include?

    #ruby singleton class

    #encapsulation

    #encapsulation in oop

    #rspec stub

    #encapsulation in oops

    #what is encapsulation in oop