Re: Return values from gtk2 widget (void) methods

[<pozsy sch bme hu>]

On Tue, 22 Oct 2002, Dermot Musgrove wrote:

> It occurred when I was writing Gtk2::Test - with (little) research I found
> that many of the calls I tested return perl undef on success but some
> return other things:
>
> Call (success)                        Gtk-Perl                Gtk2-Perl
> --------------                        --------                --------
> Gtk2->init                    1                       0
> Gtk2::Window->set_position    undef                   undef
> Gtk2::HBox->add                       ref to widget added     undef
> signal_connect                        connect id              connect id

[...]

> So what should happen? As a perler, I like the idea of returning 'true
> when they succeed and 'undef' otherwise.' like system calls. Success is
> easy to spot and failures are not easily confused with anything else.

Hi gtk2perl hackers! :)

Just my 2cents: I think the most useful return values would be 'undef' on
failure, and function-dependent ref/value (which is 'true') on success,
for example Gtk2::HBox->add could return the HBox ref itself.

If a function want to return true, why not use the perl fact the
everything except undef,'' and 0 is true?

-- 
pozsy