> On Saturday, June 20, 2020, 6:34:02 PM EDT, Christof Ressi <info@christofressi.com> wrote:

In pd_defaultbang, what is the reasoning for calling the list method with a null selector while calling the
anything method with an "&s_bang" selector?
> contrary to the list method, the selector for the anything method *does* carry significant meaning. At the very least, it's necessary for the default anything method (which prints an error message).

I guess what I'm trying to ask is if there's a design constraint that requires the selector to be null in said code. Or
better yet-- if the code were changed so that the selector is *never* null would bad things happen?

Thanks,
Jonathan

Christof

On 21.06.2020 00:29, Christof Ressi wrote:

Ah, sorry, I misread you're last reply. I thought you were repeating your first question :-)

On 21.06.2020 00:24, Christof Ressi wrote:

Did you read the discussion I've linked too? To quote Miller:

I'm not sure this is a real problem - _anything and _list methods simply aren't guaranteed
anything about the "s" argument - it shouldn't ever be dereferenced.

I think this is the answer to your question. Since the selector of a list message is actually redundant, you're free to pass NULL.

Christof

On 21.06.2020 00:16, Jonathan Wilkes wrote:
> On Saturday, June 20, 2020, 4:02:44 PM EDT, Christof Ressi <info@christofressi.com> wrote:


> Hi, the selector for a list method certainly shouldn't be "bang", rather it should be "list".

Let's back up.

Miller,

In pd_defaultbang, what is the reasoning for calling the list method with a null selector while calling the
anything method with an "&s_bang" selector?

Thanks,
Jonathan

> There has been a discussion about this in the past and I have agree with IOhannes that Pd shouldn't send NULL selectors: https://sourceforge.net/p/pure-data/patches/555/.

> Christof

On 20.06.2020 21:19, Jonathan Wilkes via Pd-list wrote:
Hi Miller,

In pd_defaultbang of m_class.c, why does the list method get called with "0" for a selector instead of "&s_bang" for the c_listmethod invocation?

Best,
Jonathan

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