changing local namespace of a function

[Bo Peng]

Jeff Shannon wrote:
> 
> This sounds to me like you're trying to re-implement object orientation.
> 

I have no control over the big dictionaries. All I need to do is 
processing them in situ --- that is to say, go into each map and 
manipulate numbers. Parameter passing should be avoid whenever possible 
since involved number of items are huge.

It is basically like

   exec 'statements' in d

but a function with local dictionary d would be best.

Bo