From: rm_rails@...
Date: 2005-08-12T03:04:39+09:00
Subject: Namespace of method arguments (Ruby 2 Idea?)



In the Programming Ruby book in the section of namespaces, I see
the example:

   require "trig"
   require "action"
   y          =   Trig.sin(Trig::PI/4)
   wrongdoing = Action.sin(Action::VERY_BAD)

It seems very common to me to use constants from the module
as parameters to the module - and rather uncommon to want
constants from a different module as a parameer.

Is there a reason why a method's arguments can't automatically
include the namespace of the module the method came from so
I could simply write:

   y          =   Trig.sin(PI/4)
   wrongdoing = Action.sin(VERY_BAD)

and have it automatically look in the Trig namespace for
the first PI and the Action namespace for VERY_BAD?
I think this would make a lot of code that makes heavy use
of constants look a lot cleaner; and perhaps encourage people
to use constants more often rather than just magic numbers
or strings or symbols as arguments.