Based on your two methods there, I'd say that the person writing means

Class#method

to be an instance method, while

Class.method

is a class method. However, I'm not sure that it's used that way in
general.

Around here, from what I've gathered, # is simply a prefix that means
"the following word is a method."  So if I'm talking about the foo
method, I'd say #foo.  That way you know it's a method. It'd be sort
of like writing foo() when talking about C.

- Dan