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 FileMaker Pro Custom Functions

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ListGet ( InList; InNum )

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  Average rating: 4.4  (27 votes)
  Discuss this Custom Function

Richard DeShong, LogicTools
http://logictools.com

Get the value from the list, specified by InNum

Sample Input:
ListGet ( "A¶B¶C" , 2 )
Sample Output:
"B"


 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:

Uses FM's GetValue() function, but tests for IsEmpty() and returns "Empty" instead.

~~~ Design Notes ~~~

This is part of a series of LIST functions.
ListAdd, ListAddUnique, ListExist, ListGet, ListToggle.
Each uses the same name format: List<do what>
Each uses the same parameter format: InList; InValue.

They also work in concert with two SET functions:
SetVar and SetField
These are all designed to work with variables and to
keep the variables from being un-set (removed from memory),
by using the string "Empty" to indicate IsEmpty().
Example:
If a field, MyField, is empty and I use SetVar(),
MyVariable = SetVar( MyField )
Tnen MyVariable is now = "Empty"

~~~

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 might insert some trimming functionality to preclude the errant space(s), or any other unwanted characters in the validation:

Let( V = GetValue ( InList; InNum ); Case ( IsEmpty ( Substitute ( V ; " " ; "" ); "Empty"; V ) )
// Get the specified (InNum) value of InList. If no value, return "Empty" string.

Bart Bartholomay, South Florida
August 29, 2014 3:45pm

Hi Bart, thanks for that. In the case, I'm not interested in modifying the list, just getting what ever is there. These functions are used to work with lists that I've created in the UI. It is at creation time that I manage input into the list. If I was to work with a list that I did not create, then I would clean it first - before trying to get a particular value.

Richard DeShong, Berkeley, CA
March 23, 2016 4:04pm

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Answer 8 + 8 =
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