[PD] Changing Send/Receive Names After Instantiation

[Alexandre Torres Porres]

I guess this is a parallel discussion, right?

https://github.com/pure-data/pure-data/pull/604

we've been discussing how to add an inlet to [receive] so it behaves like
[iem_receive]

Em qua., 25 de mar. de 2020 às 18:50, Christof Ressi <info at christofressi.com>
escreveu:

> Haha, what I wanted to say is that if you're worried about the danger of
> using [iem_receive], then dynamically destroying [r] is not a solution
> because it is just as dangerous because the destructor of [r] will
> unbind the symbol.
>
> An easy way to avoid this problem on the user side is to always use a
> clock for the message that is going to unbind the symbol. E.g. the
> following is always safe:
>
> ... -> [del 0] -> [set foo( -> [iem_receive]
>
> The reason is that [del 0] breaks the message passing chain and executes
> the messages downstream at the beginning of the next scheduler tick.
> Same thing for dynamically deleting objects.
>
> Don't worry too much. If you've been using [iem_receive] and dynamically
> deleted objects and didn't experience a crash, it probably means you're
> using it in more or less safe ways. It's just something to keep in mind
> for your next patch :-)
>
> Christof
>
>
> On 25.03.2020 22:16, oliver wrote:
> > Christof Ressi wrote:
> >> Check out the following discussion on GitHub:
> >> https://github.com/pure-data/pure-data/pull/604
> >>
> >> TL;DR: if you unbind a symbol from a receiver while sending to the
> >> symbol, Pd can crash because you modify the bind list while iterating
> >> over it.
> >>
> >> Personally, I've been using [iem_receive] in some projects and didn't
> >> run into problems, but only because I avoid the case described above.
> >
> > Thanks Christof for the explanation !
> >
> > @IOhannes: i think this should be noted in the helpfile.
> >
> >
> >> Dynamically destroying objects is even more dangerous ;-)
> >
> > Bummer ... another thing i do quite often ;-)
> >
> > Since i am not a programmer: how would i decode that twinkle emoji in
> > your sentence ?
> >
> > does it mean:
> >
> > a.) be happy that you survived so far, because you're really on mined
> > territory here ...
> >
> > b.) i know it's not encouraged, but as long as you don't tell anybody ...
> >
> >
> >
> > sorry ... getting a little anxious these days ...   ;-)
> >
> > best
> >
> > oliver
> >
> >
> >
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>
>
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