15. Advanced Calculation Techniques
Logical Functions
Chapter 8, “Getting Started with Calculations,” presented an introduction to FileMaker Pro calculation formulas. This chapter deals not only with more specialized functions than the ones presented in Chapter 8, but also deals with the more programmatic functions—those that allow you to control operations of calculations. These are often called logical functions.
Chapter 8 discussed two of them: the If and Case conditional functions. This section continues with other logical functions.
The Let Function
The Let function enables you to simplify complex calculations by declaring variables to represent subexpressions. (In programming lingo, they are very much like subroutines.) These variables ...
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