looking for an object

[ernopolo]

hello!

I'm looking for an object which filters out all duplicate elements from a data stream, remembering each one which passed through, not letting any of them through for a second time until it's reset.
does it exist?

or should i just use collect, thin and iter at the "reset" moments...? it would work in some cases. anyway, i'm courious if this long-term-memory-bach.change exists.

best,
E

[danieleghisi]

You should be able to do that just with [bach.collect @autoclear 0] and [bach.belong].

[ernopolo]

bach.belong - thanks! it was completely out of my sight. i was laming around with bach.intersect for such cases, but this seems more simple.
best,
E"