Special Edition Using® Crystal Reports® 10

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Using the Formula Extractor to Create Custom Functions

The Formula Expert enables you to create formulas from existing custom functions. The Formula Extractor does the exact opposite—it enables you to create custom functions from previously created formulas. This functionality is accessible by creating a new Custom Report Function and selecting the Use Extractor button. Figure 4.23 displays the Extract Custom Function from Formula dialog accessed when creating custom report functions.

Figure 4.23. The Extract Custom Function from Formula dialog enables the creation of a custom function from an existing formula.

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By using the ...

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