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 FileMaker Pro Custom Functions

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RemoveValue ( Values ; ValuesToRemove )

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  Average rating: 4.5  (20 votes)
  Discuss this Custom Function

Koji Takeuchi, Freelance
http://sevensdoor.com/

Opposite version of FilterValues ().

Sample Input:
RemoveValue ( "aa¶bb¶cc¶aa¶dd" ; "aa¶dd" )
Sample Output:
"bb¶cc"


 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:

description:
Opposite version of FilterValues ().
ex.
theList = "aa¶bb¶cc¶aa¶dd"

RemoveValue ( theList ; "aa" )
-> "bb¶cc¶dd"
RemoveValue ( theList ; "a" )
-> "aa¶bb¶cc¶aa¶dd"
RemoveValue ( theList ; "bb¶dd" )
-> "aa¶cc¶aa"

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:

5 most recent comments | Show all 14 comments

Thanks for recommendation.
It's cool shorten version, but I still like to use "step by step" style in Let() function even if it's redundant because it feels much readable for me. (but I missed the code even thogh it's "step by step" ;-)

Sorry, no offence. Thanks, again.

Koji Takeuchi, Tokyo
July 07, 2015 4:12am

I use this function today (sorry, it's first time...) and I found this is not useful!

I rewrote this function for:
- Removed unnecessary return at the end of result
- Specifying multiple values on ValuesToRemove. (So I changed parameter name "ValueToRemove" to "ValuesToRemove")

Koji Takeuchi, Tokyo
July 12, 2015 8:21am

Hi Koji: Today I just discovered the trailing return bug in my previous code. I run this function in a looping script to remove multiple values. And now see it was building unnecessary trailing ¶s. Thanks for trying to fix it.

However, you have now made this function into a different beast: a RECURSIVE FUNCTION.

The beauty of your original code was that it was NOT recursive. Recursion has a limit, and I need to process HUGE lists and don't want to have to worry about reaching a recursion limit. So, I would use this non-recursive function to remove a single value and run it in a looping script to remove multiple values.

I think you should have taken your new code and created a new custom function and named it RemoveValues and kept this one as RemoveValue to be a single-value non-recursive function.

I've revised my original code to fix the trailing paragraph bug. I'll post the code in my next comment, if anyone is interested. It goes back to removing only one value from all the list. But what's important is that the following alternate code DOES NOT USE RECURSION. Thus, you can use it in a looping script and never have to worry about reaching a recursion limit.

John Davis, Houston
July 17, 2015 7:53am

RemoveValue ( Values ; ValueToRemove )
NON-RECURSIVE, remove SINGLE-VALUE alternate code:

Let (
[

TARGET =
ValueToRemove;

SOURCE =
Substitute ( Values ; ¶ ; "¶¶" );

REMOVED =
Substitute (
¶ & SOURCE & ¶;
¶ & TARGET & ¶;
""
) ;

COMPRESSED =
Substitute ( REMOVED ; "¶¶" ; ¶ );

TRIMMED =
Middle ( COMPRESSED ; 2 ; Length ( COMPRESSED ) - 2 );

RESULT =
TRIMMED

] ;

RESULT

)

John Davis, Houston
July 17, 2015 7:58am

Well Koji, I've got to hand it to you. I tested your function over a list of 1 million values, and it didn't fail. Got the same number of results as my looping script with the non-recursive function. And the benchmarks were similar.

Can you enlighten me on your recursion? Is there no limit restriction on this function?

John Davis, Houston
July 17, 2015 9:45am

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