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defined( )
exist( )
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Returns whether the specified file exists.
Syntax
Parameters
filename
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the name of the file to check.
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Returns
boolean
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true if the specified file exists.
false if the specified file does not exist.
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Notes
iPP predefined the above macro for use with the #if directive.
Example
#if exist(OUTPUTFILE)
#error release not setup properly
#endif
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