Re: st: looping over parallel lists - is there a alternative to "for"?

[Phil Schumm <pschumm@uchicago.edu>]

On Mar 16, 2006, at 11:44 AM, Nick Cox wrote:
> Also, you could -tokenize- inside the loop:
>
> foreach element of loc nylist {
> 	tokenize `element'
> 	...
> }

Indeed, this would make for much cleaner code within the loop, albeit  
still a bit difficult to read (since one has to go back and forth  
between the positional macros and what they refer to).  For this  
reason, I still think it would be nifty if you could write:


loc mylist `" "1 a I" "2 b III" "3 c III" "'
foreach numeral, letter, roman of loc mylist {
    ...
}


but, as I said, I haven't thought through the full implications of  
this, nor do I have any idea how difficult it would be to implement.   
I also have no idea whether it would offend StataCorp from an  
aesthetic perspective...


-- Phil

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