ArrayDeduplicate without sorting works in Panorama X but not in Panorama 6.0


In Panorama X, this statement

formulafill arrayfilter(Email1,",",{?(arraysearch(arrayrange(Email1,1,seq()-1,","),import(),1,",")>0,"",import())}) 

deduplicates an array without sorting it. In Panorama 6.0, it just puts itself into an endless loop. Why is that?


Your formula worked for me in Panorama 6. My test used only 7 records, with 12 elements in each array.

Were Panorama 6 and Panorama X working with the same data?


Yes - identical. I’ll send you a copy of the database.


It looks like we found something Panorama X can do faster than Panorama 6.

58 PM

07 PM


If I wait long enough, it does work for me - I was expecting it to run more quickly in Panorama 6.0 so when it had taken over a minute, I assumed (wrongly) that it had bogged down.

It takes just over a minute on my new i5 iMac with 16GB of RAM. If I modify the problematic statement to use a simple deduplicate( function, it takes only 11 seconds. In Panorama X, the times are 5 seconds and 9 seconds.

I would be interested to get Jim’s take on why Panorama X is so much faster in this case.


I should clarify the above. Panorama X took 9 seconds to do the non-sorting deduplication and 5 seconds to do the standard dedup.


I’m obviously not Jim, but I expect it’s due to the difference in the way that the arrayfilter( function is implemented. In Panorama X, arrayfilter( is a core function, written in Objective C. In Panorama 6, it’s a custom function that uses a call( function to call a procedure that builds the appropriate arrayfilter statement, and then executes it with an execute statement. Panorama X is just doing the arrayfilter(, while Panorama 6 needs to do a lot of other stuff before it can do the arrayfilter.


Sigh … And here I was, thinking that I’d discovered the Holy Grail of Panorama X performance.