planetbad.blogg.se - How to use filemaker pro custom function

The defining condition must always lead to the base condition eventually in order to avoid infinite recursion.

Defining condition that breaks down the complex problem into simpler problems, then calls itself with simpler values leading it closer to the base condition.

A base condition that returns a simple value and does not call itself.

There are two main features that are necessary for an effective recursive function: Any looping functionality can be replicated using recursion.įor those of you not familiar with recursive functions or who are interested in a review, here is a simple definition:Ī recursive function is a function that calls itself. If you like to try it earlier, please contact us.With no true looping ability in FileMaker Pro calculations, it is the recursion capability that accounts for much of the power of custom functions.

Please try the new feature with 11.1pr3 or later.

Please avoid endless loops or endless recursion as you may need to wait a long time. If Claris someday implements this into FileMaker Pro, they may do some trick to temporary replace the function with your edits to make sure recursion runs the new version. But if any of the functions call itself, you will call the version before your modifications. Please note that the variable assignments can use other custom functions. Please note that this will show result as text and looses formatting. If text is longer, you can scroll the area via mouse wheel. The result is shown in the dialog left to the buttons. If you have comment lines starting with // followed by the parameter name and an equal sign, we will take those to initialize the parameters. We wrap it in a Let statement to define the parameters as local variable and then we let FileMaker's Evaluate() function check for errors without executing it. When you click Check Syntax, we take your expression and build a test expression around it. Let's put that from a script to C++ and do it within the plugin:Īs you see we got two new buttons for the custom script editor dialog in FileMaker Pro. I remembered we had something like this in FileMaker as database: Formatting and error checking expressions in FileMaker, where you can enter a formula, format syntax and check for errors. And that's what wish was my puzzle for the weekend to solve. Recently we noticed a new idea on the FileMaker Community, a wish to extend the custom functions dialog with some useful capabilities to execute a custom function or check the syntax.