[PD] Fwd: basic logic (AND OR) and control in PD

[matthew venn]

Hi people, I'm really new to PD, and I've got so many questions! I'm
working a lot out with the docs, but I've got a couple of things I've
not been able to work out on my own.

1/- where can I find documentation on expr?

2/- I have attached a patch that I'm sure can be optimised. It's
control logic for a loop sampler, and my questions are

* why do I have to convert bangs to numbers to be able to use them
with expr - see the stuff after unpack, and also the trigger on the
left . Am I having a misunderstanding about the difference between the
types of messages (bangs and numbers)?

* is there a way I can get rid of the selects? It seems I have to do
this to be able to get expr to send a message

Thanks for any help,

Matthew
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