Re: easy calling of associative array?

[Ray Andrews <rayandrews@eastlink.ca>]

On 11/03/2015 07:57 AM, Bart Schaefer wrote:
> Using "typeset -gA ary" in "middle" prevents this; it says "don't declare
> a new local parameter, use the one that is already in scope."
>
> The usage with "-g ary[idx]" says "don't attempt to index into a new local
> parameter $ary, instead index into the existing $ary if there is one."
> Which is what you want if the name "ary" has been passed down through $1.
>
Ok, that's quite clear.  Thanks Bart.  Historian that I am, I expect 
that if the writers of the first shells realized how far their work 
would evolve, they'd have introduced rigorous C-ish scoping and typing 
at the getgo, since largeish projects sure could use it.  One is often 
unsure what is going on with variables when there are several  levels of 
functions.  This use of typeset sounds like excellent insurance.