What is difference between class and Class.new & module and Module.new ? I know that: Class.new / Module.new create an anonymous class / module . When we assign it to constant for the first time it becomes name of that class / module . class / module do this automatically. When we want to inherit, we can pass an argument: Class.new(ancestor) . When we don't specify an ancestor, it is set to the Object . class use this syntax: class A < Ancestor Class.new returns an object . class A returns nil . Same goes for module s. Did I miss something?

class vs Class.new, module vs Module.new

What is difference between class and Class.new & module and Module.new?

I know that:

Class.new/Module.new create an anonymous class/module. When we assign it to constant for the first time it becomes name of that class/module. class/module do this automatically.
When we want to inherit, we can pass an argument: Class.new(ancestor). When we don't specify an ancestor, it is set to the Object. class use this syntax: class A < Ancestor
Class.new returns an object. class A returns nil. Same goes for modules.

Did I miss something?