Is ruby really an fully object oriented language?
ruby, ruby-on-rails, ruby-on-rails-3
Solution
- ActionView::Helpers
- ActionController::Helpers
For other things called without a receiver, look at the `Kernel` module, where stuff like `puts` is defined. Since the module is included in `Object`, its methods are available everywhere. How exactly would that contradict the -- IMHO overused -- claim that everything is an object?
Problem
Ruby is fully object oriented language. In ruby, everything is an object & therefore, belongs to some class. for example `5` belongs to `Object class` ``` 1.9.3p194 :001 > 5.class => Fixnum 1.9.3p194 :002 > 5.class.superclass => Integer 1.9.3p194 :003 > 5.class.superclass.superclass => Numeric 1.9.3p194 :005 > 5.class.superclass.superclass.superclass => Object 1.9.3p194 :006 > 5.class.superclass.superclass.superclass.superclass => BasicObject 1.9.3p194 :007 > 5.class.superclass.superclass.superclass.superclass.superclass => nil ``` so, we have to call all methods by prefixing class/object name as in `Object_name#method_name`. example: ``` 5.times{|i| puts i} ``` now, rails has these so called helpers like `stylesheet_link_tag`, `javascript_include_tag`, `form_for` etc which do follow this `Object_name#method_name` syntax, so i guess they are just normal functions. so my question is - What are these rails helpers? - If they just functions & do not inherit from any class. Doesn't that contradict the claim made saying - in ruby, `everything a object & there are no primitives`. As the example, people cite `5.+(6)` saying even operators are just plain methods?