dennisdesantis

Is it possible to sort a coll by more than one criteria?

Basically, I want to sort all entries by their third item, and in cases where the third item is shared between entries, I want to sort those entries (and only those entries) by their second item.

This is sort of a followup to my previous, overly-long post here:

https://cycling74.com/forums/check-for-duplicates-without-discarding-them/

Is it possible to sort a coll by more than one criteria? 

This is sort of a followup to my previous, overly-long post here:
https://cycling74.com/forums/check-for-duplicates-without-discarding-them/

sort-coll-by-multiple-criteria

Isn't coll's sort stable? If it is, then you just sort on the last sort key, followed by sort of the penultimate sort key, and continue working your way up to the main sort key.

I've not tried this, and I don't actually remember whether coll's sort is stable or not. But you should at least give it a try.

My patch still doesn't, but that's only because this turned out not to actually solve the problem I thought it would.

But - it's super helpful to know anyway.


Glad I could help. In this case more of a lucky guess. Thanks for trying it—now we know!

At some point I had the same problem and found that coll's sort algorithm is not stable. I was probably working with Max5. So, unless that has changed in Max6 or 7, I wouldn't rely on that. The safest way to do what you need is something along these lines:

... or bach.sort, which is stable and has a "by" attribute!

At some point I had the same problem and found that coll's sort algorithm is not stable. I was probably working with Max5. So, unless that has changed in Max6 or 7, I wouldn't rely on that. The safest way to do what you need is something along these lines: 

Sort coll by multiple criteria?