Double colons before class names in Ruby?
Solution 1:
It means that you're referring to the constant File from the toplevel namespace. This makes sense in situations like this:
class MyClass #1
end
module MyNameSpace
class MyClass #2
end
def foo # Creates an instance of MyClass #1
::MyClass.new # If I left out the ::, it would refer to
# MyNameSpace::MyClass instead.
end
end