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 FileMaker Pro Custom Functions

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AntiFilterValues( ListA; ListB )

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  Average rating: 4.3  (45 votes)
  Discuss this Custom Function

Bruce Robertson, Concise Design
http://concise-design.com

Return values only contained in ListA

Sample Input:
AntiFilterValues( "1¶2¶3¶4¶1¶"; "1¶3")

Assuming you have archived a list of record ID values for a table:
AntiFilter(OldRecIDlist; newRecIDList)
Sample Output:
2
4

List of deleted records


 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed

Description:

Updated 5/3/2009 - correct results if listB is empty (returns ListA)
Updated 10/13/2008 - now correctly fully matches list item

Another custom function that does the opposite of the built-in FilterValues function. It returns the list of items that are only contained in ListA.

This one has high performance across tens of thousands of records and in my testing, beat performance of some of the compile and calculate list methods.

Deals with recursion limit by using a hardwired multiline calculation, and by dwindling the list.

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it

Discuss:

The use of a variable in here is problematic if, as is the case here, the variable is a name that might well be used elsewhere in a solution (like in a script that calls this function.)

I would recommend changing $top to $toptoptoptop, or something even more obscure like $Ilovebaconbutihatefrenchtoast .

Christopher Bailey, Boston MA
February 04, 2015 12:40pm

Kudos! Doesn't fail from the "duplicate sequential values" bug like so many other list functions. And fantastic to code around the recursion limit!

Christopher Bailey: How about renaming the local variable to $AntiFilterValues_top or even $AFV_top ? Might be unique enough to avoid conflicts and yet easier to decipher if pops up in debugging.

John Davis, Houston
July 04, 2015 5:41pm

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