Useful Custom Functions

This chapter presents a sampling of custom functions that weve found useful, or that we feel serve as good examples of functions we use in our day-to-day practice. They e broken into groups according to their purpose, much as Filemakers calculation functions are.

Please note that these functions are meant as examplesweve not tested them exhaustively, nor is this collection meant to be comprehensive. We hope youll find some of them helpful directly, or that reading and analyzing others might provide a springboard for your own ideas.

We use a couple of icons to denote specific types of custom functions:

This icon shows that the function participates in a "sub-function" relationship: the function in question either calls or is called by other custom functions.

This icon shows that the function is recursive: in other words, under certain circumstances, it calls itself.