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 FileMaker Pro Custom Functions

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ApplyToList( ListA; function, separator )

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  Average rating: 4.2  (41 votes)
  Discuss this Custom Function

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

Apply FUNCTION to each item in list

Sample Input:
applyToList( list( invoiceItems::ProductID); "[n]"; ", " )
Evaluate(
applyToList( list( invoiceItems::amount); "[n]"; "+" )
)
Sample Output:
XL123, SM234, P0001

237.50


 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:

Given a list, apply a function to each item in the list and return the results separated by separator. Rather than walking a range from N1 to N2, this merely walks a list of supplied values. This is a recursive function. The range functions are great but sometimes you need to work with a list.

Use [n] notation to identify item in list.

applyToList( $$array ; "Case( Left( [n] ; 1)=1; [n])"; ", " )
=>
1 Adak, 10 Anchor Point, 11 Anchorage, 12 Anchorage, 13 Anchorage, 14 Anchorage, 15 Anchorage, 16 Anchorage, 17 Anchorage, 18 Anchorage, 19 Anchorage

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:

I noticed this function and the one by Debi Fuchs (found at http://www.briandunning.com/cf/899 ) have the exact same name, but the first two parameters are in reverse order compared to each other. That could lead to some serious confusion. Also, the function by Debi Fuchs handles potential errors much more thoroughly.

Just a heads-up to anyone looking at these functions.

Dan Shockley, New York, NY
April 11, 2013 10:21am

Thanks. Looks like she went further with a more robust implementation of the idea.

Bruce Robertson, Redmond WA
April 11, 2013 11:03am

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