[PD] Data structures - delete specific scalar?

[Christof Ressi]

this has been on my wish list for a while and I want to do a PR. do you guys have suggestions which kind of interface you would prefer? these come to my mind:
* [delete] object: send it a pointer and it will delete the scalar
* [delete <p>( message for canvases
* [delete( message for [pointer]: deletes the scalar of the currently stored pointer.

I tend towards the last option, since [pointer] is already used to traverse a subpatch, so [delete( could go well with [traverse(, [bang( and [next(. the canvas messages would also makes sense to me. having a dedicated object seems rather overkill.

---

there's another feature I'd love to have: being able to compare two pointers for equality. (it's such a fundamental thing for working with pointers/iterators but there's no way to do this in Pd, apart from hacky things like assigning each scalar some unique ID).

I'm struggling with a good interface, though. again, a dedicated object feels awkward to me.
maybe an [equal <pointer>( message to [pointer] which compares the incoming pointer with the stored pointer and outputs 0 or 1?


> Gesendet: Sonntag, 20. Mai 2018 um 14:40 Uhr
> Von: "Derek Kwan" <derek.x.kwan at gmail.com>
> An: "Roman Haefeli" <reduzent at gmail.com>, pd-list at lists.iem.at
> Betreff: Re: [PD] Data structures - delete specific scalar?
>
> Roman Haefeli <reduzent at gmail.com> writes:
> 
> > Hey all
> >
> > Following up a thread from 2011:
> > https://lists.puredata.info/pipermail/pd-list/2011-04/088306.html
> >
> > I would like to know whether it is impossible to delete a specific
> > scalar, by pointer. If so, why is that? Does it use a design that makes
> > it difficult to allow this? To my untrained eye there is no apparent
> > reason why it is possible by editing the GUI graphically/manually, but
> > not per message.
> >
> > Roman
> > _______________________________________________
> > Pd-list at lists.iem.at mailing list
> > UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list
> 
> If I'm not mistaken, this relates to a thread I started in Jan 2017 and
> I think this bit from Christof Ressi might prove releavant to these
> discussions so hopefully this link could help with the current discussion:
> 
> https://lists.puredata.info/pipermail/pd-list/2017-01/117295.html
> 
> Derek
> 
> -- 
> Derek Kwan
> www.derekxkwan.com
> 
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