[PD] Read from and write to an array at once (?!?)

[Pierre Massat]

Dear list,

I feel very happy and pretty stupid at the same time. I've been trying to
make a simple "sound-on-sound" looper for a while now. I've search on the
web but i haven't any really convincing. Most what i've found was
complaints about the fact that it was difficult to achieve with tables, and
that delay lines couldn't be flushed.

Well, I just discovered that it was actually possible to read from and
write to the same array at the same time. I thought it was impossible (i'd
never even tried, to be honest). So here's my (probably stupid) question :
is this a feature ?
If it is that could probably explain why I didn't find much about loopers
in Pd, since it is very straightforward.

Cheers,
Pierre
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