Re: Determine object passed as argument

On Sunday, April 12th, 2026 at 3:27 AM, Heime <[email protected]> wrote:

> 
> On Sunday, April 12th, 2026 at 2:38 AM, [email protected] <[email protected]> wrote:
> 
> > [email protected] writes:
> >
> > > Heime <[email protected]> writes:
> > >
> > >> Can a function determine the object being passed as argument and
> > >> print its name.  For instance that I passed if I pass fpln when
> > >> calling (lana-du-fpln 'fpln).
> > >>
> > >> (defun lana-du-fpln (datenstruk &optional bname)
> > >>
> > >
> > >   (defun lana-du-fpln (datenstruk &optional bname)
> > >     (symbol-name datenstruk))
> > >
> > >   (lana-du-fpln 'fpln)
> > >   => "fpln"
> > >
> > > Or,
> > >
> > >   (defun lana-du-fpln (datenstruk &optional bname)
> > >     (format "Name of symbol: %s" (symbol-name datenstruk)))
> > >
> > >   (lana-du-fpln 'fpln)
> > >   => "Name of symbol: fpln"
> >
> > Or,
> >
> >   (defun lana-du-fpln (datenstruk &optional bname)
> >     (if (cl-typep datenstruk 'symbol)
> >       (symbol-name datenstruk)
> >       ;; Else
> >       "Not a symbol"))
> >
> >   (lana-du-fpln 'fpln)
> >   => "fpln"
> >   (lana-du-fpln '(a b c))
> >   => "Not a symbol"
> >   (lana-du-fpln "abc")
> >   => "Not a symbol"
> 
> No need for boundp as outlines by Jean?

Can I use (symbolp datenstruk)

If the test fails and is not a symbol, then what is the
argument?  Anonymous?

Can I determine whether the input is a hash-table, plist, 
alist or something else?

> > --
> > The lyf so short, the craft so long to lerne.
> > - Geoffrey Chaucer, The Parliament of Birds.
> >
> >