Hey, anyone know a good way in pd vanilla to check a number stream against a list, and output a bang if the number is in the list?

I've used awful, brute-force solutions to this problem with tons of [sel] objects and message boxes, but these are messy and inflexible. It's a simple challenge logically, so I'm hoping there's a better solution.

My brute force solution (only one [sel] object shown, but in reality there would be one [sel] for each [$n]:

[float]      [list]
   \         / | \ 
    \    [$1][$2][$3] (etc., *n)
     |     \ | /
     [sel  (*n) ]

Not sure if there's a better solution but you could try this really simple external. It returns 1 or 0 if it finds a match or not. I only have a linux build at the moment but the source is there if you want to try building it yourself.

EDIT: zip now includes Windows and Mac builds

has.zip

@chvolow24 If you need a vanilla abstraction try this....... sieve.zip
David.

@chvolow24 Also made one.

in_list.zip

@myQwil @whale-av @ingox
Y'all are great. @ingox wins the prize for simplicity & elegance (I'm implementing this solution now), but I learned something valuable from each of these replies. Thanks!!

@chvolow24 It is basically the same as @whale-av's solution. I just used this other list-drip: https://forum.pdpatchrepo.info/topic/11122/faster-list-drip-with-list-store-pd-0-48

I updated the patch to use left and right outlet.