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 FileMaker Pro Custom Functions

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VariableDestroyAll

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  Average rating: 4.5  (30 votes)
  Discuss this Custom Function

Jonathan Mickelson, Thought Development Corp.
http://thought-dev.com

When used in conjunction with

Sample Input:
If $$GlobalVarList =

$$GlobalVarList|0
$$testVar|34
$$AgeTemp|7
Sample Output:
The following variables have been set to Null (""):

$$GlobalVarList
$$testVar
$$AgeTemp


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

Description:

Requires FileMaker 8 or higher.

Removes all global variables listed in $$GlobalVarList, including $$GlobalVarList. If used properly, this can insure a file has no Global variables in use any more.

NOTE: Should be used in conjunction with the CF "VariableInitialize ( name ; initialValue )", which maintains a list of all variables initialized in a file in another variable named $$GlobalVarList.

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:

Forgive my ignorance, but I'm scratching my brain raw figuring out how to implement this (and its companion) custom function.

Let's say there are three global variables ($$_Alpha, $$_Bravo, $$_Charlie) that I want to null in a script using this technique. How do I set it up, not knowing what the variable's contents are (since they'll change as a loop function is called)?

TIA for your help.

Rich, Lewiston, ID, USA
May 22, 2017 1:41pm

This function only removes variables it knows about because their names live in a variable called $$GlobalVarList... Which is what the other companion function does, it creates the variable and logs it to that variable.

You could easily write a function that takes a list of variable names, as teext, and clears them all in one fell swoop. It would either be recursive, or substitute the evalates clearing similar to my functions.

A great custom funtiin is CustomList, Google it. It's tremendous, and does it's majic non recursively!!

Good luck!!!

Jonathan Mickelson, Los.Angeles, CA
May 22, 2017 8:58pm

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