11

in ruby, :: namespaces the module and class. But I often see :: at the beginning of the class name like the following:

#snippet of gollum gem def page_class @page_class || if superclass.respond_to?(:page_class) superclass.page_class else ::Gollum::Page end end

What does that :: stands for if its in the beginning?

Improve this question
2

1 Answer 1

Reset to default
25

It is to resolve against the global scope instead of the local. 

class A def self.global? true end end module B class A def self.global? false end end def self.a puts A.global? puts ::A.global? end end B::a

prints 

false true
Improve this answer
Sign up to request clarification or add additional context in comments.

Comments

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.