how should I group some stateless functions into a module and use them
in a very simple way without littering the namespace? E.g. if the
module is ``Foo’’ with at least one function foo, then I’d like to use
that module in a way as simple like that:
The first solution that I’ve found is to write Foo.rb like follows:
class << Foo
Is that Ok? Or is there even a simpler way?