Brian Dunning's FileMaker Custom Functions

UnionList ( ListA ; ListB ; leaveBlank )

Logical union of two lists of values

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Rob Poelking   Rob Poelking
Excelisys, Inc.
http://excelisys.com

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  Sample input:
UnionList ( List ( "apple" ; "pear" ; "orange" ) ; List ( "pear" ; "banana" ; "mango" ) ; "" )
  Sample output:
apple
pear
orange
banana
mango

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Simple function that uses tail recursion to perform a logical union of two list omitting duplicates.

 

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