Re: [bug-gawk] typeof() array subscripts

[Hermann Peifer]

On 2015-06-20 20:57, Andrew J. Schorr wrote:
> On Sat, Jun 20, 2015 at 01:23:22PM +0200, Hermann Peifer wrote:
> > I just came across the new builtin function typeof() in gawk master and made
> > the below observations which I found confusing, because "array subscripts
> > are always strings", as I learned from the manual. Maybe I am overlooking
> > something.
>
> Well, the truth is not quite as simple as the manual makes it out to be.
> The code has some different backend array implementations to optimize
> performance for arrays with integer subscripts, since that's an important
> usage case.
>
> I think what you're seeing here are artifacts of that issue.  For fun, try the
> same tests with "gawk -M".  I don't think it should really matter; can you
> think of cases where this could cause trouble?

No actual problem here, I was just too naïve, as it looks like.

Do I also see it right that typeof()'s "untyped" actually means "untyped 
scalar" whereas the debugger's "untyped variable" is a different animal, 
as it can turn into an array?

Hermann