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 FileMaker Pro Custom Functions

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fnSetGlobalVar ( Name; Value )

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  Average rating: 3.8  (57 votes)
  Discuss this Custom Function

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

Dynamically sets a global variable with a single script line.

Sample Input:
fnSetGlobalVar ( "myVar"; "myValue" )
Sample Output:
$$myVar = myValue


 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:

Allows the user to set dynamic global vars without having to explicitly script a named variable. So you can have a single line script set variable [$var] pass the parameters and create a global var on the fly or destroy it by passing the name with no value. I needed to declare a global variable in a different file and did not want to script just for that single variable. I wanted something I could reuse as needed

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:

Rob, I have taken the liberty to change the function to allow the repetition to also be specified. My changes also have it return the evaluation error code s the function result.

Many thanks for an excellent cf.

--- begin

// SetGlobalVar ( name ; repetition ; value )
// Author: Rob Poelking
// Date: 20080613
//
// Modified by Vaughan Bromfield to specify the repetition.
// The function returns the error result from the evaluationn operation
// which is zero when there is no error.
//
// This function does not check that the variable name is valid
// other than filtering out non-alphanumeric characters.

Let ( 

[
nameclean = Filter( name ; "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz1234567890" ) ;
repetitionclean = Int( GetAsNumber( repetition ) )
] ; 

EvaluationError( Evaluate ( "Let ( $$" & nameclean & "[" & Max( repetitionclean ; 1 ) & "] = " & Quote ( Value )  & "; 0 )" ) )

) // end let


/* Notes: Allows the user to set dynamic global vars without having to explicitly script a named variable. So you can have a single line script set variable [$var] pass the parameters and create a global var on the fly or destroy it by passing the name with no value. I needed to declare a global variable in a different file and did not want to script just for that single variable. I wanted something I could reuse as needed. */

--- end

Vaughan Bromfield, Sydney, Australia
April 23, 2010 5:10pm

Very good, I had actually done this myself already. I just hadn't updated this. However, I've started using a set of functions from Fabrice Nordmann for keeping a log of variables. VariablesLog, VariablesResetAll and LoadVariablesFromLog. They're very powerful and I highly recommend them.

Nevertheless, this is still a great function for what it does. Thanks.

Rob Poelking, South Euclid
April 23, 2010 6:09pm

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