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 FileMaker Pro Custom Functions

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SubtractValues ( list ; list2 )

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  Average rating: 4.6  (29 votes)
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Jonathan Stark, Jonathan Stark Consulting
http://jonathanstark.com/

This functions subtracts list2 from list1, where both lists are in the format returned by the ValueListItems design function.

Sample Input:
list1 = "1¶2¶3¶4¶5¶6¶7"
list2 = "7¶2¶4"
Sample Output:
list3 = "¶¶¶1¶3¶5¶6"


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

Description:

This functions subtracts list2 from list1, where both lists are in the format returned by the ValueListItems design function. It is the reverse of the built-in filterValues function. SubtractValues is useful for displaying the unselected members of list in a portal.

Note: I didn't bother trimming the leading return from the result because I was using it as a multikey for portal filtering.


There are a couple of other custom functions on Brian's site that are similar, but I think it is helpful to see all different ways to skin the cat. This page is a nice resource, by the way - kudos Dunning!

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:

Thanks Jonathon.

Vaughan, Sydney, Australia
June 23, 2011 2:53am

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