Re: typeof() creates elements in an array

[arnold]

This is indeed the correct answer. Thanks.

Arnold

david kerns <david.t.kerns@gmail.com> wrote:

> Not a bug
>
> Remove the typeof operator and you’ll see the array is still increased. 
> Referencing the new element increases the length
>
> > On Sep 27, 2021, at 11:13 AM, Ivo Palli <ivo@palli.nl> wrote:
> > 
> > Hiya,
> > 
> > After sparring about this on the help mailinglist, I decided to upgrade
> > this to a bug.
> > 
> > This:
> > 
> > split("123", arr, "");
> > print typeof(arr[0]);
> > 
> > creates a new element on arr[0]. (length(arr)==4)
> > 
> > This is unexpected since the manual
> > 
> > https://www.gnu.org/software/gawk/manual/html_node/Type-Functions.html
> > 
> > says:
> > 
> >> Normally, passing a variable that has never been used to a built-in
> >> function causes it to become a scalar variable (unassigned). However,
> >> isarray() and typeof() are different; they do not change their arguments
> >> from untyped to unassigned.
> > 
> > As a regular user I would not expect new elements to be created, and
> > honestly I don't see this behavior as useful. I suggest changing it so
> > new elements are not created anymore. If this can not be done due to
> > language constructs for example, I suggest adding a caveat in the manual.
> > 
> > Regards,
> > 
> >   Ivo Palli
> > 
>