Nested scopes hitch

[Fernando Pérez]

Jeff Shannon wrote:

> If you want access to variables inside of a function, you should
> pass those specific variables as arguments.  If you've got lots
> of arguments in common between lots of functions, assemble the
> lot into a class.  If neither of these is appropriate, then you
> should redesign -- you're using a very ugly approach.
> 

Not necessarily. I can show you several examples of functions which need to 
know the context of the caller in a generic enough fashion that argument 
passing isn't a viable option. Fortunately so far I've been able to get what 
I've needed by manipulating the stack, but the point remains. Yes, in _most_ 
cases a clean, explicit passing of arguments is the right way to do things. 
But there are perfectly valid cases where more complex solutions are needed, 
don't dismiss them so quickly.

Cheers,

f.