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 FileMaker Pro Custom Functions

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FieldRepetitionLast ( field ; maxRepetition )

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Jonathan Mickelson, Thought Development Corp.
www.thought-dev.com

Returns the highest non-empty repetition for a repeating field.

Sample Input:
FieldRepetitionLast ( TheaterSeats_Row1_r20 ; "" )
Sample Output:
18


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

Description:

----------------------------------------------------------------
FieldRepetitionLast ( field ; maxRepetition )
----------------------------------------------------------------

-- DESCRIPTION --

Returns the highest non-empty repetition, to match the behavior of "Last ( Table::RepeatingField )" which returns the highest non-empty repetition's value.
NOTE: This calculation uses Recursion, but only as many as the parameter 'MaxRepetition'.

-- EXAMPLES --

FieldRepetitionLast ( TheaterSeats_Row1_r20 ; 20 ) = 18 when the 18th repetition has "John" entered in it.

Use this function with a script to automate putting a value into the highest available empty repetition:
Set Field [ TheaterSeats_Row1_r20 [ FieldRepetitionLast ( TheaterSeats_Row1_r20 ; "" ) +1 ] ; "Jane" ]

Use this funtion with a script to loop though clearing all repetitions of a repeating field:
Loop
Exit Loop If [ FieldRepetitionLast ( TheaterSeats_Row1_r20 ; "" ) = 0 ]
Set Field [ TheaterSeats_Row1_r20 [ FieldRepetitionLast ( TheaterSeats_Row1_r20 ; "" ) +1 ] ; "" ]
End Loop

-- PARAMS --

field - any repeating field, or expression that returns a reference to a repeating field.
maxRepeat - (Optional) A number representing the highest repetition to begin counting down to test for the Last entered value.
If left blank, it will count down from 100.

-- RESULT --

number - a number representing the highest non-empty repetition's value

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

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