Re: path PATH

[Roman Perepelitsa <roman.perepelitsa@xxxxxxxxx>]

On Wed, Jan 25, 2023 at 7:26 PM Ray Andrews <rayandrews@xxxxxxxxxxx> wrote:
>
> On 2023-01-25 09:37, Roman Perepelitsa wrote:
> >
> > This value is usually called "empty" or "null". The parameter is not
> > unset though.
> >
> Ah.  Ok, that's the correct terminology.  Yeah.  'unset' implies the var
> itself does not exist vs. having a null value.  So how can I check for
> all null parameters?

You can use [[ -z ]] for that.

    for name in ${(k)parameters}; do
      if [[ -z ${(P)name} ]]; then
        print -r -- $name
      fi
    done

> Come to that, how many fundamental types are there?

There is ‘scalar’, ‘array’, ‘integer’, ‘float’ or ‘association’. I
copied it straight from the docs.

Roman.